Mercury® Diesel
TDI 4.2L (370hp)

Smooth and Powerful

This Mercury Diesel engine sets a new benchmark for low noise and vibration.

  • Power mhp / kW 370 / 272
  • Maximum RPM (WOT) 4200
  • Engine type V8
  • Displacement (L) 4.2
  • Weight (engine only) 836 lbs / 379 kg

The specifications displayed here may not be indicative of the entire engine family; click on the “See All Models and Specs” link to view the specs in detail.

See All Models and Specs

Potencia y rendimiento

Power & Performance.

The low weight of these diesels results in best-in-class power-to-weight ratio. Combined with great low-end torque, the end result is crowd-pleasing hole shot, great acceleration, low planing times and ultra-smooth performance.

Ruhige Fahrt.

Clean, Quiet, Efficient.

DI technology uses injectors to spray diesel fuel atomized at 26,000 psi directly into the main combustion chamber of each cylinder. This process optimizes fuel efficiency and minimizes emissions, along with engine Noise, Vibration and Harshness (NVH) for an enjoyable boating experience.

Diseño intuitivo.

Intuitive Design.

Mercury® SmartCraft® compatibility is built into these engines, delivering key information about vital engine functions on an easy-to-read LED display. SmartCraft Digital Throttle & Shift (DTS) offers smooth shifting, immediate throttle response and high-tech digital controls.



The TDI engine block is fabricated from Vermicular Graphite Casting (VGC), which has twice the strength of grey iron and most of its attributes, but is 5% to 10% lighter. The end result is low weight, high strength, and maximum heat transfer for optimum cooling.

TDI is a registered trademark of Volkswagen Aktiengesellschaft


Mercury diesels feature state-of-the-art anti-corrosion, including a thermostatically controlled closed water-cooled system. Water-cooled engine oil, gear oil and steering fluid decrease engine-room temperatures, extending engine life. The SeaCore® system is available for the ultimate in saltwater protection.


Mercury® Diesel: TDI 4.2L (370hp)

  • Power mhp / kW
    • 370 / 272
    Bore and stroke
    • 3.27 x 3.74" / 83 x 95 mm
    Maximum RPM (WOT)
    • 4200
    Engine type
    • V8
    Displacement (L)
    • 4.2
    Dimensions (L x W x H)
    • 47 x 33 x 33" / 1206 x 835 x 836 mm
    Weight (engine only)
    • 836 lbs / 379 kg
    Weight (incl. transmission)
    • 933 lbs / 423 kg
    Weight - Bravo One
    • 1067 lbs / 484 kg
    Weight - Bravo Two
    • 1082 lbs / 491 kg
    Weight - Bravo Three
    • 1093 lbs / 496 kg
    Cooling system
    • Closed cooling
    Fuel consumption
    • 20.5 gph / 77.6 lph @ 4200
    Compatible drives
    • Bravo One
    • Bravo Three
    • Bravo Two
    • BSO 2 RCD 2 IMO 2 EPA Tier 3
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