RJ3 Automotive

16 South Cherry Drive, Oswego, IL 60543

We are now open Saturday's 8am-2pm! Call us to schedule!

 RJ Automotive proudly recommends and installs JASPER products. Learn more at www.jasperengines.com.

YOUR BEST SOLUTION: Jasper Remanufactured Engines, Transmissions & Differentials
  • Adds worry-free years to the life of your vehicle
  • Saves money over the purchase of a new or another used vehicle
  • Can add to eventual resale value of your vehicle
  • Remanufacturing quality products since 1942
  • One of the largest remanufacturers of drivetrain products.
  • Two distribution centers for nationwide availability.
  • 41 Nationwide Branch locations and over 1580 Associates working for YOU!
  • JASPER combines precision, expertise, and attention to detail to provide you with the very best in remanufactured engines, transmissions, differentials and a variety of other drivetrain related products.
  • Every JASPER remanufactured engine & transmission is backed by a Nationwide Transferable 3 Year / 100,000 Mile Parts & Labor Warranty.
  • Gas Engines:
                    JASPER remanufactured gas engines are built to meet or exceed OEM specifications, and have a 3 year/100,000 mile nationwide, transferable parts and labor warranty.  Most JASPER reman gas engines are available immediately from our huge distribution network across the U.S. This means you can be up and running again in the time it takes to tear down your engine and get a quote on a rebuilt engine.
  • Transmissions:
                 JASPER offers remanufactured automatic and standard transmissions with most popular models in stock for immediate availability and come with a 3 year/100,000 mile Nationwide Transferable Warranty-Parts and Labor. Off-road applications receive an 18 month/100,000 mile parts and labor warranty. 
            Go to our online catalog and get a price online, and then find a JASPER installer in your area. We'll ship your remanufactured transmission right to the Installer you've chosen. 
  • Diesel Engines                                                                                               
            JASPER remanufactures a complete line of domestic and import diesel engines including Caterpillar, Cummins, Detroit, GM, International, Isuzu, and Perkins. We offer both immediate exchange and custom remanufacturing programs designed to minimize your downtime. Every year, JASPER remanufactures over 6,500 diesel engines of all sizes and makes, from on-highway to off-road and industrial.
  • Differentials & Rear Axle Assemblies                                                   
  • Performance Engines & Transmissions
                JASPER has four levels of engine performance for your project vehicle. We offer "Stock," "Class I,"  "Stock Performance Engine," and "Class II."  For more information on our performance engines and transmissions, please visit our website and go to our "Products" page.
            JASPER remanufactures a complete line of Rear Axle Assemblies and Differentials including Dana, Chrysler, Spicer, Ford, and GM. Most popular chassis applications are available for immediate exchange. Toyota and other manufacturer's differentials are available with one day in-plant custom remanufacturing.
       JASPER also offers a complete line of medium and heavy duty differentials including Eaton, GM, Meritor (Rockwell), Navistar and Spicer differentials. Products include single speed, two speed and tandem units for on and off-highway applications. Other vendor models are also available through custom remanufacturing. Factory and distributor inventories together with a substantial stock of parts, allow us to provide overnight availability on over 500 models and ratios.


Special Offers & Coupons

All of our services are competitively priced, yet we still offer additional discounts and special offers. Click to see our latest coupons that you can use for upcoming services.

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RJ3 Automotive

Main Office
16 South Cherry Drive
Oswego, IL, 60543


  • Monday 8:00AM-5:00PM
  • Tuesday 8:00AM-5:00PM
  • Wednesday 8:00AM-5:00PM
  • Thursday 8:00AM-5:00PM
  • Friday 8:00AM-5:00PM
  • Saturday 8:00AM-2:00PM
  • Sunday Closed

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