Engine Overview
The MAN 175D is a 6-cylinder inline turbocharged and aftercooled marine diesel engine designed for high-performance yacht and commercial vessel applications. This engine combines German engineering precision with proven reliability for sustained operation at high output levels.
Technical Specifications
Configuration: 6-cylinder inline
Power Output: 1,176 HP (880 kW) at 2,100 rpm (rating dependent)
Displacement: 25.8 liters (1,575 cubic inches)
Bore x Stroke: 175mm x 215mm
Aspiration: Single turbocharger with air-to-water aftercooling
Fuel System: Common rail direct injection
Cooling System: Fresh water cooled with heat exchanger
Weight (dry): Approximately 2,400 kg
Emissions: IMO II compliant
Available Power Ratings
The MAN 175D platform offers multiple ratings for different applications:
Recreational (Pleasure Craft):
1,176 HP at 2,100 rpm
1,100 HP at 2,100 rpm
Commercial (Continuous Duty):
1,029 HP at 1,800 rpm
956 HP at 1,800 rpm
Light Duty (Intermittent):
1,324 HP at 2,300 rpm
Parts specifications and service intervals may vary by rating. Always verify requirements with engine serial number.
Typical Applications
The MAN 175D is commonly installed in:
Fast motor yachts (50-75 feet)
Sport fishing vessels
High-speed ferries and passenger craft
Patrol and coast guard vessels
Luxury tenders and chase boats
Commercial fishing vessels
Crew transfer vessels (wind farm service)
Service Intervals & Maintenance Schedule
MAN Recommended Service Intervals
Initial Break-In Service (50 Hours)
First oil and filter change
Check all mounting bolts and connections
Inspect for leaks (fuel, oil, coolant)
Verify cooling system operation
Check belt tension
Inspect turbocharger installation
Verify no unusual noises or vibrations
250 Hours / 3 Months (whichever comes first)
Engine oil and filter change
Fuel filter replacement (pre-filter and fine filter)
Check air filter restriction indicator
Inspect raw water pump and impeller condition
Visual inspection of all systems
Check coolant level and concentration
Inspect drive belts for wear and proper tension
Check for fluid leaks
Verify all gauges and alarms functioning
500 Hours / 6 Months
Complete oil and filter change
Replace all fuel filters
Replace air filter elements
Replace raw water pump impeller
Inspect turbocharger for leaks and damage
Check all hose connections and clamps
Inspect heat exchanger anodes (replace if greater than 50% depleted)
Sample and test coolant condition
Clean crankcase breather (or replace if disposable)
Check valve clearances (if specified by MAN)
1,000 Hours / Annual Major Service
All 500-hour service items
Replace coolant filter/conditioner
Valve lash inspection and adjustment
Compression test (all cylinders)
Replace serpentine belt(s)
Inspect and clean heat exchanger
Test all sensors and safety systems
Inspect engine mounts and flexible coupling
Perform complete cooling system inspection
Inspect exhaust system
Check injector return flow rates
2,000 Hours / 2 Years
Major service including all 1,000-hour items
Replace all coolant (complete system flush)
Fuel injector testing and service/replacement
Turbocharger inspection (bearing play, seals)
Inspect aftercooler (pressure test, clean)
Replace all drive belts
Timing gear inspection
Complete electrical system check
Charge air system leak test
Load bank test (recommended)
4,000 Hours / Major Overhaul
Cylinder head removal and inspection
Injector replacement (complete set)
Turbocharger rebuild or replacement
Major bearing inspection
Valve train complete overhaul
Replace all seals and gaskets
Piston and liner inspection
Complete engine survey
Essential Maintenance Parts
Engine Oil & Filtration System
Oil Capacity: Approximately 55 liters (14.5 gallons) with filter
MAN Required Oil Specifications:
ACEA E6 or E7 specification minimum
API CJ-4 or CK-4 for common rail engines
SAE 15W-40 for normal operation (5°C to 40°C)
SAE 10W-30 for cold climate operation (-15°C to 30°C)
Must meet MAN M 3575 specification
Oil Quality Requirements:
The MAN 175D uses common rail injection at 2,000+ bar pressure. Oil quality directly affects injector longevity. Contaminated oil, incorrect viscosity, or extended service intervals can result in catastrophic engine damage.
Oil Filter:
Single large-capacity full-flow filter. Must be replaced at every oil change (250 hours). Only genuine MAN filters should be used. Filter element failure can result in catastrophic damage to engine bearings and injection components.
Oil Analysis:
Regular oil analysis is recommended at 250-hour intervals. This monitors wear metals and contamination, predicts component failures, and extends engine service life.
Fuel System Components
The MAN 175D uses common rail direct injection technology.
Fuel Filter System:
Primary Fuel Filter (Water Separator):
Provides coarse filtration (10-30 micron) and separates water from fuel. Replace every 250 hours. Check water bowl daily in humid climates. Drain water immediately when detected.
Secondary Fuel Filter (Fine Filter):
Provides final filtration (2-5 micron) and protects the common rail system. Replace every 250 hours. This component is critical for injector protection. Aftermarket filters must never be used.
Fuel System Priming:
After filter changes, use hand primer pump until firm resistance is felt. Run until fuel flows without air bubbles. Bleed at high points in fuel system. Air in the system will cause hard starting and rough running.
Common Rail Fuel Injectors:
Operating Principles:
Electronically controlled piezo-electric actuators pressurize fuel to 2,000+ bar (29,000 PSI). Multiple injection events occur per combustion cycle with ultra-precise fuel metering. The ECU controls injection timing and quantity.
Injector Service Life:
Normal operation with clean fuel: 10,000-15,000 hours
Average fuel quality: 6,000-10,000 hours
Poor fuel quality: 3,000-5,000 hours
Injector Failure Symptoms:
Rough running or misfiring on specific cylinder(s)
Black smoke under load
Loss of power
High fuel consumption
Hard starting (especially cold)
Unusual combustion knock
ECM fault codes
Injector Replacement Costs:
Single injector: £1,500-2,200
Complete set (6): £9,000-13,200
Labor for replacement: £800-1,500
ECM programming: £200-400
Total replacement cost: £10,000-15,000
Air Intake & Turbocharger System
Air Filter Elements:
Heavy-duty marine air filters must be replaced every 500 hours minimum. More frequent replacement is required in dusty environments. Check restriction indicator at every inspection. Never attempt to clean and reuse filters. Restricted filters result in power loss and increased exhaust gas temperatures.
Turbocharger System:
The MAN 175D uses a single large turbocharger providing forced induction.
Turbocharger Maintenance:
Inspect at every 500-hour service
Check for oil leaks around seals
Listen for unusual whistling, grinding, or rattling
Check wastegate operation (if equipped)
Verify boost pressure meets specifications
Inspect inlet and outlet connections
Expected Service Life:
Normal operation: 12,000-18,000 hours
Poor maintenance: 6,000-10,000 hours
Rebuild cost: £2,500-4,500
Replacement cost: £4,000-7,000
Turbocharger Failure Symptoms:
Gradual or sudden loss of power
Excessive black smoke under load
Blue smoke (oil burning through seals)
Unusual whistling or grinding noise
Increased oil consumption
High exhaust gas temperatures
Aftercooler (Charge Air Cooler):
Air-to-water type integrated with the cooling system. Reduces intake air temperature by 60-80°C, increasing power output and reducing emissions. Inspect for leaks at annual service. Clean seawater side annually if applicable. Pressure test during major service intervals.
Cooling System
System Design:
The MAN 175D uses a closed freshwater cooling system. Fresh water cools the engine and aftercooler. Raw seawater cools the fresh water via a heat exchanger. An expansion tank maintains system pressure (typically 1.0-1.4 bar).
Coolant Specifications:
Use MAN approved coolant only
Pre-mixed: 50% concentrate, 50% distilled water (protection to -37°C)
System capacity: Approximately 85 liters
Replacement interval: Every 2,000 hours or 2 years
Automotive coolant must never be used
Coolant Requirements:
Correct coolant protects aluminum cylinder head and block, prevents cavitation on cylinder liners, and contains corrosion inhibitors for marine environments. Incorrect coolant voids warranty and causes expensive damage.
Coolant Filter/Conditioner:
Contains supplemental coolant additives (SCA) that prevent liner cavitation and corrosion. Replace at 1,000-hour intervals.
Raw Water System:
Raw Water Pump:
Engine-driven pump with rubber impeller. Impeller must be replaced every 500 hours. More frequent replacement is required in sandy, silty, or debris-laden water. Always carry spare impeller kit on board. Impeller failure results in overheating within 2-3 minutes.
Impeller Service Procedure:
Remove pump cover (typically 4-6 bolts)
Extract old impeller (note rotation direction)
Inspect pump housing for wear or scoring
Lubricate new impeller with glycerin or soapy water
Install with vanes bent in direction of rotation
Replace cover gasket every time
Verify all vanes present when removing old impeller
Heat Exchanger:
Large tube-and-shell type with sacrificial zinc or magnesium anodes for corrosion protection. Inspect anodes every 500 hours. Replace when 50% depleted. Clean tubes annually in saltwater service. Pressure test at 2,000-hour intervals.
Common Cooling System Problems:
Failed impeller causing immediate overheating
Depleted anodes causing corrosion damage to tubes
Clogged heat exchanger causing gradual cooling capacity loss
Air pockets in system causing localized overheating
Low coolant level causing cavitation and overheating
Thermostat stuck closed causing overheating
Thermostat stuck open preventing engine from reaching operating temperature
Drive System & Accessories
Serpentine Belt System:
The MAN 175D uses heavy-duty poly-V belts to drive the alternator (typically 24V, 80-140A), raw water pump, coolant pump, and power steering pump (if equipped).
Belt Maintenance:
Inspect tension every 250 hours
Check for cracks, glazing, fraying, or oil contamination
Replace every 2,000 hours minimum
Replace immediately if any damage visible
Proper tension is critical
Use belt tension gauge rather than thumb pressure method
Flexible Coupling/Damper:
Absorbs torsional vibration. Inspect at annual service. Check for cracks, wear, bolt torque, and oil contamination. Typical replacement interval is 8,000-12,000 hours. Failure symptoms include unusual vibration, noise, and difficulty achieving smooth RPM.
Common Issues & Failure Points
Based on 35+ Years of MAN Engine Experience
1. Common Rail Injector Issues
Primary Causes:
Contaminated fuel (water, particulates, biological growth)
Poor quality fuel filters
Extended fuel filter service intervals
Low fuel quality
Air in fuel system
Electrical issues (wiring deterioration, connector corrosion)
Symptoms:
Rough running or misfiring
Black smoke under load
Hard starting
Loss of power
Increased fuel consumption
Engine knock
ECM fault codes
Prevention:
Use only genuine MAN fuel filters
Change filters at 250-hour intervals
Use high-quality marine diesel fuel
Use fuel biocide in tropical climates
Polish fuel tanks annually
Drain water separator daily
Never run low on fuel
Cost of Failure:
Single injector: £1,500-2,200
Complete set (6): £9,000-13,200
High-pressure pump damage: £3,500-6,000
ECM damage: £2,000-3,500
Potential total damage: £15,000-20,000
2. Cooling System Failures
Failed Raw Water Impeller:
Causes:
Age and heat deterioration
Running dry
Sandy or debris-laden water
Cavitation damage
Installation damage
Symptoms:
High temperature alarm
Reduced raw water flow from overboard discharge
Steam from exhaust
Rapid temperature rise
Prevention:
Replace every 500 hours
Inspect removed impeller for all vanes present
Examine pump housing for wear
Keep spare kit on board
More frequent replacement in sandy water
Cost of Deferred Maintenance:
Impeller kit: £60-120
Warped cylinder head: £4,000-8,000
Head gasket replacement: £2,000-3,500
Clogged Heat Exchanger:
Causes:
Salt deposits
Scale buildup from hard water
Marine growth
Debris accumulation
Symptoms:
Gradual temperature increase
Reduced cooling capacity under load
High coolant temperature but adequate flow
Prevention:
Annual tube cleaning in saltwater
Inspect anodes every 500 hours
Flush with fresh water after seawater operation
Use correct coolant mixture
Pressure test at major service
Depleted Protective Anodes:
Causes:
Normal galvanic corrosion
Stray electrical currents
Dissimilar metals in system
Effects:
Corrosion of heat exchanger tubes
Tube perforation and leaks
Heat exchanger replacement: £3,000-6,000
Prevention:
Inspect every 500 hours
Replace at 50% depletion
Use correct anode material
Address any electrical issues
3. Turbocharger Problems
Common Causes:
Oil starvation
Contaminated oil
Restricted air intake
Excessive exhaust backpressure
Foreign object damage
Normal wear at high hours
Symptoms:
Progressive loss of power
Excessive black smoke under load
Blue or grey smoke
Unusual whistling, grinding, or rattling sounds
High exhaust gas temperatures
Increased oil consumption
Prevention:
Maintain proper oil level
Change oil and filters on schedule
Use correct oil specification
Replace air filters at 500-hour intervals
Inspect exhaust system for restrictions
Proper warm-up period
Cool-down period (3-5 minutes at idle before shutdown)
Regular inspections for leaks
Expected Service Life:
Normal operation: 12,000-18,000 hours
Poor maintenance: 6,000-10,000 hours
Rebuild vs. Replacement:
Rebuild (if caught early): £2,500-4,500
Replacement (if severe damage): £4,000-7,000
Labor: £600-1,200
4. Fuel System Contamination
Water Contamination:
Entry Points:
Condensation in fuel tanks
Poor quality fuel from supplier
Leaking deck fill cap seals
Tank vent system issues
Contaminated fuel delivery
Effects:
Corrosion in injection system components
Injector internal corrosion and failure
High-pressure pump damage
Microbial growth
Rough running and misfiring
Prevention:
Keep fuel tanks as full as practical
Use fuel stabilizer/biocide
Check water separator daily
Drain water immediately when detected
Polish fuel tanks annually
Use reputable fuel suppliers
Inspect and maintain deck fill cap seals
Biological Growth:
Grows at fuel/water interface. Produces acidic byproducts. Clogs filters rapidly. Corrodes fuel system components. Treatment requires biocide and tank cleaning.
5. Electronic System and Sensor Failures
Common Sensor Failures:
Coolant temperature sensors
Oil pressure sensor
Boost pressure sensor
Fuel pressure sensors
Exhaust temperature sensors
Engine speed/position sensor
Throttle position sensor
Mass airflow sensor (if equipped)
Causes:
Vibration
Heat exposure
Moisture intrusion
Connector corrosion
Age and deterioration
Poor installation/routing
Symptoms:
Intermittent or constant alarms
Safety shutdowns
Limp mode operation
Erratic gauge readings
Check engine light
Stored fault codes in ECM
Engine will not start
Prevention:
Keep all electrical connections clean and dry
Use dielectric grease on connectors
Inspect wiring harnesses regularly
Route wiring away from heat and abrasion points
Address corrosion immediately
Use genuine MAN sensors only
Annual electrical system inspection
Diagnostic Tools:
MAN REDS (Remote Engine Diagnostic System) software with laptop and MAN diagnostic interface is required for proper diagnosis.
6. Starting System Issues
Common Starting Problems:
Slow Cranking:
Weak or discharged batteries
Corroded battery terminals
Undersized battery bank
Failing starter motor
High engine oil viscosity
Clicking But No Cranking:
Low voltage
Failed starter solenoid
Poor electrical connections
High resistance in cables
No Response:
Dead batteries
Master switch off
Safety interlocks
Failed starter motor
ECM not receiving start signal
Grinding Noise:
Starter drive gear wear
Flywheel ring gear damage
Starter not fully engaging
Prevention:
Maintain batteries properly
Keep terminals clean and tight
Do not crank for extended periods (maximum 20-30 seconds)
Allow 2-minute cool-down between cranking attempts
Use correct battery capacity for engine
Inspect and tighten all electrical connections annually
Battery Requirements:
Large battery bank (typically 3-4 x 8D or similar). Must maintain voltage during cranking.
Starter Replacement:
Heavy-duty marine starter: £800-1,500
Emergency Spares for Extended Cruising
Essential Spares Kit for MAN 175D
Critical Parts:
Complete fuel filter set x2 (primary and secondary)
Raw water impeller kit x2 (with gaskets/seals)
Engine oil filter x4
Air filter element x1
Drive belts (complete set)
Heat exchanger anodes x4
Thermostat with gasket
Water pump seal kit
Fuel priming pump rebuild kit
Selection of common sensors (temperature, pressure)
Injector sealing rings/O-rings (set)
Assorted hoses, clamps, gaskets
Injector return hoses (set)
Fluids & Consumables:
Engine oil (MAN approved, ACEA E6/E7): 60+ liters
MAN approved coolant concentrate: 15 liters
Fuel biocide/conditioner
MAN approved gasket sealant
Thread locker (various strengths)
Electrical connectors and terminals
Spare fuses (all ratings used)
Dielectric grease
Wire ties, electrical tape
Tools Specific to MAN 175D:
Impeller removal tool
Belt tension gauge
Coolant refractometer or hydrometer
Fuel pressure test gauge
Multimeter
MAN service manual
Torque wrench
Feeler gauges (valve adjustment)
Extended Remote Cruising:
Complete belt tensioner assembly
Fuel transfer pump
Additional fuel filters (x2-3 sets)
Turbo oil feed line
Exhaust elbow gaskets
Starter solenoid
Additional sensors
Service Kit Solutions
Pre-Configured Maintenance Kits
250-Hour Basic Service Kit:
Engine oil filter
Fuel filters (primary and secondary)
Oil drain plug washer
All necessary O-rings and seals
Service record form
500-Hour Standard Service Kit:
All 250-hour items
Air filter element
Raw water pump impeller kit with gaskets
Heat exchanger anodes (set)
Crankcase breather element
1,000-Hour Annual Major Service Kit:
All 500-hour items
Coolant filter/conditioner
Complete drive belt set
Thermostat with gasket
Valve cover gasket
Comprehensive service checklist
Coolant test strips
2,000-Hour Major Service Kit:
All 1,000-hour items
Complete cooling system service kit
All coolant hoses (if replacement due)
Complete gasket set
Water pump seal kit
Extended service documentation
Custom Service Kits:
For specific overhaul requirements or extended voyages, provide engine serial number and service requirements for complete kit quotation.
MAN 175D Specifications Quick Reference
Power Ratings & Capacities
Common Power Ratings:
Recreational (2100 RPM): 1,176 HP / 880 kW
Recreational (2100 RPM): 1,100 HP / 820 kW
Commercial (1800 RPM): 1,029 HP / 770 kW
Commercial (1800 RPM): 956 HP / 715 kW
Light Duty (2300 RPM): 1,324 HP / 990 kW
Fluid Capacities:
Engine Oil: 55 liters (14.5 gallons)
Coolant System: 85 liters (22.5 gallons)
Critical Operating Parameters:
Oil Pressure (idle): 100-150 kPa (15-22 PSI)
Oil Pressure (rated speed): 400-600 kPa (58-87 PSI)
Coolant Temperature: 80-95°C (176-203°F)
Boost Pressure: Varies by rating (typically 1.5-2.5 bar)
Air Inlet Restriction: 25 mbar maximum
Exhaust Backpressure: 50 mbar maximum
Troubleshooting Guide
Quick Diagnosis Reference
Hard Starting / Won't Start:
Check First:
Fuel supply (tank level, fuel shut-off valve)
Battery voltage (minimum 24V for cranking)
Air in fuel system
ECM fault codes
Glow plug operation
Starter motor operation
Common Causes:
Air in fuel system
Low battery voltage
Faulty fuel supply pump
ECM sensor issues
Glow plug system failure
Injector issues
Loss of Power:
Check First:
Air filter restriction indicator
Fuel filter restriction
Boost pressure
Exhaust smoke color
ECM fault codes
Common Causes:
Restricted air intake
Clogged fuel filters
Turbocharger issues
Injector problems
Exhaust restriction
Low fuel pressure
High Engine Temperature:
Check First:
Coolant level in expansion tank
Raw water flow from overboard discharge
Heat exchanger anodes condition
Belt tension
Coolant concentration
Common Causes:
Failed raw water impeller
Slipping belt
Clogged heat exchanger
Thermostat stuck closed
Air in cooling system
Low coolant level
Unusual Smoke:
Black Smoke:
Rich air/fuel mixture
Restricted air intake
Turbocharger not producing boost
Injector issues
Excessive load
Blue/Grey Smoke:
Burning engine oil
Turbocharger seal leaking
Worn valve guides/seals
Worn piston rings
Excessive crankcase pressure
White Smoke:
Coolant entering combustion chamber
Head gasket failure
Cylinder head crack
Injector O-ring leak
Normal at cold startup (dissipates quickly)
Low Oil Pressure Warning:
STOP ENGINE IMMEDIATELY if pressure drops below minimum specification at operating RPM.
Check:
Oil level (dipstick)
Oil pressure gauge accuracy
Oil pressure sensor
Oil filter restriction
Oil pump operation
Causes:
Low oil level
Worn oil pump
Bearing wear
Diluted oil
Wrong oil viscosity
Check Engine Light / ECM Codes:
What To Do:
Record all active and logged codes
Note conditions when code appeared
Do not clear codes before diagnosis
Use MAN diagnostic software for detailed diagnosis
Address codes in order of severity
Parts Availability & Lead Times
At OE Engine Parts
In-Stock Items (Ship 4-5 Working Days):
Engine oil filters (genuine MAN)
Fuel filters (all types)
Air filter elements
Raw water impeller kits
Serpentine belts
Heat exchanger anodes
Common gaskets and seals
Standard hoses and clamps
Common sensors
Special Order Items (4-8 Weeks):
Fuel injectors (individual or sets)
Turbochargers and turbo components
Engine Control Module (ECM)
High-pressure pump components
Major engine assemblies
Cylinder heads
Engine blocks
Crankshafts
Express Service:
For emergency breakdowns, expedited shipping available. Air freight options for urgent requirements. Contact immediately: +44 1473 728678
Why Genuine MAN Parts Are Essential
The Cost of Aftermarket Parts
Common Rail System:
The MAN 175D common rail system operates at 2,000+ bar pressure with tolerances measured in microns. Electronic and hydraulic precision must be maintained.
Aftermarket Injectors:
Wrong hydraulic characteristics result in poor performance
Incorrect spray pattern causes incomplete combustion
Poor quality leads to premature failure
One bad injector can contaminate entire system
Voids MAN warranty completely
Fuel Filters:
Genuine MAN fuel filters are engineered for exact flow rates, proper filtration efficiency, correct filter media, and proper bypass valve operation.
Aftermarket filters may collapse under pressure, allow contaminants through, restrict flow, or leak.
Oil Filters:
Must handle high flow rates, maintain pressure differential, and filter to proper micron rating. Failure results in injector and bearing damage.
Other Components:
Sensors: Aftermarket often cause false readings
Gaskets: Wrong material causes leaks or failure
Belts: Must meet exact specifications
Thermostats: Wrong temperature causes engine damage
MAN Warranty:
Using non-genuine parts typically voids engine warranty, extended service agreements, and emissions compliance.
Technical Support & Parts Identification
How We Help MAN 175D Owners
Not Sure What Parts You Need?
Provide:
Engine serial number
Engine arrangement number (if known)
Current engine hours
Service interval due
Any issues or concerns
We Provide:
Correct part numbers for your specific engine
Availability and lead times
Competitive pricing
Technical guidance
Have a MAN Service Schedule?
Email or upload PDF
We quote all required parts
Grouped by interval
Complete kit pricing available
Emergency Breakdown?
WhatsApp photos of failed component
Include engine serial number and symptoms
We identify part and check availability
Express shipping options provided
Request Your MAN 175D Service Quote
Planning scheduled maintenance or need emergency parts?
We specialize in genuine MAN marine diesel support.
Contact Us:
WhatsApp: +44 7599 451070
Send service schedule, photos, or part numbers
Call Direct: +44 1473 728678
Speak with our MAN specialist
Email: info@oeengineparts.com
Include engine serial number and requirements
What to Include:
Engine serial number (critical for correct parts)
Arrangement number (if visible)
Current engine hours
Service interval (250/500/1,000/2,000 hours)
Power rating
Any known issues
Timeline required
Vessel location (for shipping)
Our Response:
Within 2 hours during business hours
Accurate parts identification
Honest lead times
Competitive genuine MAN parts pricing
Technical support included
About OE Engine Parts
Since 1997, we have specialized in genuine OE marine diesel components. Our family business understands that MAN engines are significant investments requiring proper parts and knowledgeable support.
Why MAN 175D Operators Choose Us:
Genuine MAN Parts - Authorized supplier
MAN 175D Expertise - 35+ years with MAN marine engines
Comprehensive Stock - Filters to complete assemblies
Responsive Service - 2-hour response commitment
Honest Communication - Realistic lead times, no surprises
Global Support - Serving vessels across 4 continents
Our Commitment:
"We provide exactly the spare part you need. You can rely on our commitment to quality and dependability." - Martin Hewing, Firm Owner
MAN 175D Service Quick Reference Card
Service Intervals:
Oil Change: Every 250 hours
Fuel Filters: Every 250 hours
Air Filters: Every 500 hours
Impeller: Every 500 hours
Anodes: Check 500 hours / Replace at 50%
Belts: Inspect 250 hours / Replace 2,000 hours
Critical Specifications:
Oil: ACEA E6/E7, MAN M 3575
Coolant: MAN approved coolant only
Oil Capacity: 55 liters (14.5 gallons)
Coolant Capacity: 85 liters (22.5 gallons)
Warning Signs:
Black smoke: Air or fuel system issue
Blue smoke: Oil burning (turbo/rings)
White smoke: Coolant in combustion
High temp: Cooling system problem
Loss of power: Air/fuel/boost issue
Emergency Contact:
WhatsApp: +44 7599 451070
Phone: +44 1473 728678
Email: info@oeengineparts.com
Last Updated: October 2025
This guide is based on general MAN 175D specifications. Always refer to your specific engine's Operation and Maintenance Manual. Part numbers, specifications, and service intervals may vary based on engine serial number, arrangement number, and rating. MAN reserves the right to make changes without notice. For critical applications, always consult with qualified MAN marine technicians.
Need Immediate MAN 175D Support?
Emergency Hotline: +44 1473 728678
WhatsApp (Available 24/7): +44 7599 451070
Email: info@oeengineparts.com
We understand engine emergencies do not follow business hours. For critical MAN 175D breakdowns, contact us anytime. We will do everything possible to get you the parts you need.
