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Mercury® Diesel
4.2L (Tier 3)

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 V-8
  • 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

Clean, Quiet, Efficient.

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.

Lightweight.

Lightweight.

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
Power & Performance.

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.

Intuitive Design.

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.

Corrosion-Resistance.

Corrosion-Resistance.

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.

Specifications

Mercury® Diesel: 4.2L (Tier 3)

  • Power mhp / kW
    • 370 / 272
    Maximum RPM (WOT)
    • 4200
    Engine type
    • V-8
    Displacement (L)
    • 4.2
    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
    Dimensions (L x W x H)
    • 47 x 33 x 33" / 1206 x 835 x 836 mm
    Bore and stroke
    • 3.27 x 3.74" / 83 x 95 mm
    Cooling system
    • Closed cooling
    Fuel consumption
    • 20.5 gph / 77.6 lph @ 4200
    Compatible drives
    • Bravo One
    • Bravo Three
    • Bravo Two
    Emission
    • BSO 2 RCD 2 IMO 2 EPA Tier 3
    Compare With Other Products
  • Power mhp / kW
    • 335 / 246
    Maximum RPM (WOT)
    • 4200
    Engine type
    • V-8
    Displacement (L)
    • 4.2
    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
    Dimensions (L x W x H)
    • 47 x 33 x 33" / 1206 x 835 x 836 mm
    Bore and stroke
    • 3.27 x 3.74" / 83 x 95 mm
    Cooling system
    • Closed cooling
    Fuel consumption
    • 18.5 gph / 69.9 lph @ 4200 rpm
    Compatible drives
    • Bravo One
    • Bravo Three
    • Bravo Two
    Emission
    • BSO 2 RCD 2 IMO 2 EPA Tier 3
    Compare With Other Products

Performance Tests

Read the reviews.

Mercury engineering reports and performance data. All available on-line for your review.

BHB - Boat House Bulletin Review
Test Date Engine Boat Prop Type
3/2015 TDI 370 Mercury® Diesel Cobalt - A40 Bravo Three® Diesel BHB -
2/2014 TDI 370 Mercury® Diesel Statement - 38 SUV IO Bravo Three® Diesel BHB -
6/2014 TDI 370 Mercury® Diesel Sea Ray - 350 Sundancer Bravo Three® Diesel BHB -
6/2014 TDI 370 Mercury® Diesel Sea Ray - 350 SLX Bravo Three® Diesel BHB -
4/2014 TDI 370 Mercury® Diesel Intrepid - 30 Open Bravo Three® BHB -
1/2014 TDI 370 Mercury® Diesel Sea Ray - 350 Sundancer - BHB -
10/2013 TDI 370 Mercury® Diesel Statement - Statement 37 SUV IO Bravo Three® Diesel BHB -
Test Date: 3/2015
Engine: TDI 370 Mercury® Diesel
Boat: Cobalt - A40
Prop: Bravo Three® Diesel
Type: BHB -
Test Date: 2/2014
Engine: TDI 370 Mercury® Diesel
Boat: Statement - 38 SUV IO
Prop: Bravo Three® Diesel
Type: BHB -
Test Date: 6/2014
Engine: TDI 370 Mercury® Diesel
Boat: Sea Ray - 350 Sundancer
Prop: Bravo Three® Diesel
Type: BHB -
Test Date: 6/2014
Engine: TDI 370 Mercury® Diesel
Boat: Sea Ray - 350 SLX
Prop: Bravo Three® Diesel
Type: BHB -
Test Date: 4/2014
Engine: TDI 370 Mercury® Diesel
Boat: Intrepid - 30 Open
Prop: Bravo Three®
Type: BHB -
Test Date: 1/2014
Engine: TDI 370 Mercury® Diesel
Boat: Sea Ray - 350 Sundancer
Prop: -
Type: BHB -
Test Date: 10/2013
Engine: TDI 370 Mercury® Diesel
Boat: Statement - Statement 37 SUV IO
Prop: Bravo Three® Diesel
Type: BHB -

See All Performance Tests

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