Conversion for BW 310mm LU (A618), GM 400 (3L80), AT-540 & Buick 350

Conversion SpacerPart No. GMBW-WS-40 Conversion for BW 310mm LU (A618), GM 400 (3L80), AT-540 & Buick 350 Tooling: GM-R-15 Sonnax conversion spacer GMBW-WS-40 and outer stator race GM-R-15 are used with the GM 300mm outer stator race, springs and rollers for a cost-effective upgrade to BW 310mm LU (A618), GM 400 (3L80), AT-540 and Buick 350 stator clutch assemblies. The upgrade repairs and improves the performance of OE stator cams with problematic roller clutch design. Use with Sonnax outer stator race GM-R-15 for a cost-effective upgrade Hardened for added durability Specs Material: Steel Thickness: 0.039" Inner Dia.: 2.350" Outer Dia.: 3.600"