The R2.8 Turbo Diesel is the first factory-built diesel crate engine on the market. Cummins Repower uses proven parent engine families and tailors them specifically for the light duty enthusiast aftermarket.

The 4-cylinder QSB4.5 for Tier 4 Final is more powerful and responsive than ever before, delivering up to 173 hp (129 kW), with a peak torque of 520 lb-ft (705 N•m), a 12 percent increase over that of the previous Tier 4 Interim engine.

Cummins diesel engines, natural gas engines, and alternative fuel engines deliver reliable power with the torque and efficiency you need.

The inline 4-cylinder B4.5 delivers 16 percent more power and 11 percent more torque than the current version of this engine. The Cummins-designed wastegate turbo is a key component in delivering exceptional power and responsiveness for faster cycle times

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Engine Design: The B4.5L is an in-line, 4-cylinder,16-valve cylinder head, 4-stroke diesel engine, with a robust rebuildable engine block designed for continuous operation. Industry leading engine torque provides excellent vessel acceleration, control and maneuverability.

The 4 cylinder ISB4.5 engine is suitable for trucks up to 18 tonnes and buses up to 12m. It has become one of the most widely used engines for low-carbon diesel electric hybrid buses across the UK and Europe. It is available up to 210ps for trucks and buses, with a …

The 4B3.9 is a 4-cylinder in-line/rotary fuel system design that has the power you need and the reliability you demand. Like all B Series engines, it is a proven power plant with mechanical fuel injection that meets ecological concerns in a highly efficient package.

With ratings from 60 HP (45 kW) to 85 HP (63 kW) and 224 lb-ft (304 Nm) of peak torque, Cummins in-cylinder solution meets Tier 3 and Stage IIIA emissions or Tier 4 Interim emissions below 75 HP (56 kW) with both naturally aspirated and turbocharged versions that deliver strong performance while maintaining a simple and cost-effective design ...

This advanced technology enables the QSF2.8 to meet the near-zero emissions standards of Tier 4 Final/Stage IV using only cooled Exhaust Gas Recirculation (EGR) and our proprietary Diesel Oxidation Catalyst (DOC).