Fits Ford 4R100 Transmission Raybestos GPZ Deluxe Level 2 4WD Rebuild Kit 1998-On

This rebuild kit includes all Raybestos GPZ Friction Clutches, Steels, 4WD Filter, Band, Pump Bushing, Extension Housing Bushing, Sealing Rings, Metal Clad Seals, Gaskets, Orings, Pistons, Rubber Piston Seals + Servo Piston, Low/Rev (Rear) Sprag, Intermediate 34 Lugs, Overdrive Spiral Snap Ring, Torrington Bearing Kit, & Transgo Accumulator Kit. 

You get three upgrades plus all the torrington bearings!! First this kit includes the spiral updated snap ring that holds the overdrive return spring. The servo piston we include is a solid one piece designed to replace the stock one, pull all that junk out of your case and replace it with this piston they used in later applications. This kit also has your Transgo accumulator kit to replace your worn original equipment .372 diameter aluminum valve and bushing that can cause soft shifts with the improved steel .371 Line Boost valve & Bushing! This kit fixes the common wear areas in the E4OD/4R100! The original aluminum clutch line regulator valves shed the hard plating on the ends, scratch the bore stick. Resulting in burned clutches and missing shifts. Replace with 3 New Hard Steel Regulator Valves that fit all E4OD’s/4R100 and fix the problem!


This Transmission Kit is one we sell everyday to Transmission Shops, it fits the 4R100 1998-On 

Raybestos Powertrain GPZ plates greatly increase transmission performance and durability. This state-of-the-art friction material far exceeds OE material to withstand high stress, high temperatures and repeated cycling. GPZ plates outstanding performance benefits are perfect for heavy duty vehicles and high-stress driving. Testing GPZ revolutionary friction material shows that it outperforms OE materials by as much as 20%. Plus, its performance improves as the power increases.


You get three upgrades plus all the torrington bearings!! First this kit includes the spiral updated snap ring that holds the overdrive return spring. The servo piston we include is a solid one piece designed to replace the stock one, pull all that junk out of your case and replace it with this piston they used in later applications. This kit also has your Transgo accumulator kit to replace your worn original equipment .372 diameter aluminum valve and bushing that can cause soft shifts with the improved steel .371 Line Boost valve & Bushing! This kit fixes the common wear areas in the E4OD/4R100! The original aluminum clutch line regulator valves shed the hard plating on the ends, scratch the bore stick. Resulting in burned clutches and missing shifts. Replace with 3 New Hard Steel Regulator Valves that fit all E4OD’s/4R100 and fix the problem!


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