• JKGJ Transmission Parts proudly offers this high-quality Master Rebuild Kit for JR403E / RMK transmissions used in medium-size diesel trucks. Built to OEM specifications or higher, this complete kit is trusted by transmission professionals nationwide.

  Whether you’re a repair shop or rebuilding your own transmission, this kit delivers the reliability and performance you need.

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  Product Features:

  • Compatible with GM and Isuzu trucks (1988–1998) using JR403E / RMK 4-speed RWD

  • Designed for medium-size diesel trucks

  • Includes:

    • Full Transmission Overhaul Kit

    • Friction Clutch Plates (Standard Set)

    • Steel Clutch Plates (Standard Set)

  • Friction materials typically include BorgWarner; may vary based on application

  • Some kits may include OE components from Raybestos, Dynax, Allomatic, ZF, or Honda

  • Meets or exceeds OEM quality and durability standards

  • Assembled and tested by JKGJ Transmission Parts

Additional Details:

• Core Charge: Core Charge Applies Pay Pal Request Will Be Sent After Purchase.
• Order Information: Include your vehicle’s year, make, model, and VIN for faster processing.

Why Choose Us?

• All our torque converters adhere to the strictest industry standards.
• We provide technical support 7 days a week—Contact us for assistance.

  Expert Support: Contact Us – Just Ask For John!

Shipping Information:

• Ships via UPS Ground within the continental U.S.
• Alaska and Hawaii shipments via USPS Priority Mail.
• Worldwide Shipping Available – Contact us for international shipping rates if your country isn’t listed.

Shop with Confidence:

• Genuine product images—no generic pictures.
• Hundreds of hard-to-find transmission parts available. If you don’t see what you need, contact us for assistance.

Thank You for Choosing JKGJ Transmission Parts!

Your satisfaction is our priority. Feel free to contact us with any questions or to request additional products.

Order now and experience the JKGJ difference!