M&H Stage V Marine Engines


Emissions reductions from Stage 1 to M&H Stage V

Based on 4.5L & 6.8L engines in the 130 to 224 kW engine power output range

Reduction in CO 99.78%
Reduction in NOX 99.79%
Reduction in PM 99.81%

M&H Stage V Engines Features and Benefits


M&H Stage V engines come with a three-year warranty as standard.

Warranty conditions are – one-year unlimited hours, three years total 5,000 hours maximum.

An extended warranty is available at an extra cost for an additional two years.

Service and support

Service and support contracts are available for the warranty period and beyond. Service and support from our expanded service dealer team ensure prime operation of your engine and a long service life.

Oil change

500 hours standard oil change intervals.

Either-side Service

Oil fill and dipstick combinations, remote oil filter and fuel water separator and the DOC, PDF and SCR system for the Stage V engines, can be configured for easier service access, application and service flexibility to provide installation convenience plus fast and easy maintenance

Exhaust after-treatment

M&H Stage V engines use EGR, DPF, DOC and SCR systems to meet the Stage V emission legislation requirements. The systems are compact and packaged with knowledge of the limited space available inside vessel engine rooms.

Marine Engines
Air Inlet System Corrosion resistant aftercooler core, light-duty air cleaner
Cooling System Self-priming auxiliary sea water pump with impeller, gear-driven jacket water pump, fin and tube heat exchanger with expansion tank, coolant recovery, system, thermostat and housing
Exhaust System Dry exhaust manifold and turbocharger, round flanged outlet
Aftertreatment DOC / DPF / SCR
Fuel System Fuel priming pump, fuel transfer pump, fuel filter — RH or LH service, flexible fuel line
Lube System Crankcase breather, engine oil cooler, oil filter — RH or LH service, oil dipstick — RH or LH option, oil filler, deep sump oil pan, gear-driven oil pump
Instrumentation 12V / 24V instrument panel.
Power Takeoffs Options available
Protection System 12 or 24V electronic shutdown

Exhaust after-treatment location options

We offer various locations for the exhaust after-treatment including rear layouts as below. Other layouts will be considered depending upon the requirement and subject to engineering approval, due to the emissions certification demands.



Stage V Engine Physical Data – M4.5L, M6.8L & M9.0L

Physical Data Marine Engines

Stage V Marine Engines Data Table

M4.5L Rear  705 (1554)  1860 (73) 785 (31) 1220 (48)
M6.8L Rear 990 (2181) 2460 (97) 935 (37) 1300 (51)
M9.0L Rear 1395 (3076) 2600 (103) 960 (38) 1466 (58)

Note: All dimensions and weights given in the above table and in the engine data sheets are indicative only. Definitive dimensions and weights will be confirmed at order placement.