4.2 L

Mercury Diesel TDI engines provide an automotive-like quality and reliability and are backed by Mercury’s ultimate global service network.

Exceptional torque at low engine speeds provides excellent acceleration and a reduction in time to plane.

Mercury’s TDI engines are lightweight, compact and lead the industry in horsepower to weight ratio.



Superior boating experience

Mercury’s TDI engines run on clean and modern diesel technology that provides a quiet, smooth ride with virtually no smoke or odors. Plus, the TDI line of engines provide impressive fuel economy, so you can stay on the water longer.


Outstanding performance

The TDI line of engines are built lightweight, compact and provide increased power for impressive acceleration and throttle response and quicker planning times.


Proven Marine systems

Mercury Diesel TDI engines are compatible with Mercury’s industry-leading systems, including Digital Throttle & Shift (DTS), SmartCraft gauges and controls* and SeaCore corrosion protection, Axius joystick control and a full line of drives and props.

* SmartCraft technology is compatible with Tier Three engines only

HP/Kw @ Prop 350 / 257
Full throttle RPM 1000-4200
Cylinder Configuration V8
Displacement (CID / L) 252 CID / 4.2 L
Weight 811lbs
Dimensions (L x W x H) 49in x 31in x 33in
1248mm x 795mm x 837mm
Compression Ratio 16.4
Bore and Stroke (in / mm) 3.27 x 3.75in
83 x 95.5mm