Chrysler/Dodge A618/48RE Transmission Raybestos High Performance GPZ Master Rebuild Kit 2003-07 This kit includes Raybestos GPZ Friction, Steel Plates, Sealing Rings, Metal Clad Seals, Gaskets, Orings & Rubber Piston Seals. This Transmission Kit is one we sell everyday to Transmission Shops, it fits the 2003-07 A618 /48RE 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.