400 (3L80), AT-540, 68RFE, 68RFE Multi-Plate Performance Converter, A618, 47RH/RE, 48RE (310mm) Multi-Plate Performance Converter, BorgWarner 310mm LU (A618, 47RH/RE, 48RE), BorgWarner 310mm NLU, Buick 350

Heavy Duty Spring Retainer Kit
Part No. GM-RS-3HPK

Sonnax heavy duty spring retainer kit GM-RS-3HPK includes a shim to help better support the springs and rolls. This is a drop-in replacement for use in stock or high-end diesel converters. The retainer features 10 sites of larger surface area contact with the stator cam, an improvement over the two smaller contact sites on the OE retainer. Greater surface contact enables the Sonnax spring retainer to prevent the common problems of bent or damaged retainers, providing enhanced wear resistance and durability.

GM-RS-3HPK replaces previously available [GM-RS-3HP] and must be ordered in multiples of five only.

  • Spring Retainer
  • Support Shim

Where to Buy

  • Existing Customers: Contact your sales representative.
  • New Customers: Fill out the form and a sales representative will contact you.
  • 400 (3L80), AT-540, 68RFE, 68RFE Multi-Plate Performance Converter, A618, 47RH/RE, 48RE (310mm) Multi-Plate Performance Converter, BorgWarner 310mm LU (A618, 47RH/RE, 48RE), BorgWarner 310mm NLU, Buick 350 Heavy Duty Spring Retainer Kit GM-RS-3HPK