TDI

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.

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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 and Axius are compatible with Tier Three engines only

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4.2L Specifications

HP/kW 350 / 257
Full throttle RPM 1000-4200
Cylinder Configuration V8
Displacement (CID / L) 252 CID / 4.2 L
Weight 811lbs
368kg
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

Note: HP and kW are metric.

TDI Engine Tests

There are currently no engine tests for this product line.

TDI Resources

Installation Drawings

Installation drawings are technical documents, detailing the dimensions of the engines to facilitate installation in new or repowered boats.

Installation Drawings
Buy the Books

You can order all available Mercury literature online or through any authorized Mercury dealer. Please have your outboard or sterndrive serial number before placing the order.

  • Operation, Maintenance and Warranty Manuals
  • Parts Manual
  • Service Manual
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Request printed brochures by mail or download as an electronic PDF.

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