JASPER - SINCE 1942

ENGINES.TRANSMISSIONS.DIFFERENTIALS

JASPER has been remanufacturing quality products since 1942 and today we are the nation's largest remanufacturer of gas and diesel engines, transmissions, differentials, rear axle assemblies, marine engines, stern drives, performance engines, and electric motors.JASPER has been remanufacturing quality products since 1942 and today we are the nation's largest remanufacturer of gas and diesel engines, transmissions, differentials, rear axle assemblies, marine engines, stern drives, performance engines, and electric motors.

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See why JASPER is the best alternative to extend the life of your vehicle.

Jasper Gas Engines


If the gas engine in your car, truck, van or SUV is no longer performing to your expectations, there’s no need to trade for a new or newer used vehicle. After all, if you didn’t intend to replace your vehicle before the engine got tired, why would you now?

Jasper Diesel Engines


JASPER diesels are built in both complete and running complete formats for most vehicles. Every running complete diesel engine is dynamometer tested under varying loads to simulate in-the-vehicle operation.

Jasper Differentials


Jasper Engines and Transmissions offers a complete line of full-float and semi-float rear wheel drive differentials for Dana/Spicer, Dodge, Ford, GM, RAM and even Isuzu, Mercedes, Nissan and Toyota truck applications up to 2 tons.

Jasper Performance


JASPER has been remanufacturing quality products since 1942 and today we are the nation's largest remanufacturer of gas and diesel engines, transmissions, differentials, rear axle assemblies, marine engines, stern drives, performance engines.

Jasper Custom Drivechains


In addition to engines, transmissions, differentials and more, Jasper also offers a specialized product that is purely custom manufacturing: The JASPER Authentic Custom Drivechain.