Sonnax weld-in turbine hub GM-HTCM-57, along with performance converter kit GM-RK-13, adapts late, front-wheel drive GM 245mm cores for use in GM 4L60-E transmissions that originally came with 300mm LU converters. GM-HTCM-57 is designed to hold up in demanding, performance applications where a late GM 245 core is used. This design correctly locates the O-ring groove in the piston/damper assembly.

Adapts late GM 245mm cores
AISI 4130 Chromoly steel forging
Weld-in

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