4L80-E (Dual Stator), 4L80-E (Early Single Stator), 4L80-E (Late Single Stator), 4L80-E, 4L85-E, Single-Plate Performance Converter (Mounting Ring)

Performance Converter Mounting Ring Kit
Part No. GM-RK-15

View Instructions

Sonnax performance converter mounting ring kit GM-RK-15 is designed to work with both early- and late-model GM 4L80-E, 4L85-E transmissions and utilizes the GM 245mm core. The versatility of this core allows converter builders to produce performance converters offering a wide variety of stall speeds with improved efficiency.

  • Turbine and impeller hubs made from hardened Chromoly steel
  • Thrust washer is hard-anodized
  • Forged mounting ring
  • Utilizes the GM 245mm core
  • Impeller Hub
  • Inner Stator Race
  • Turbine Hub
  • Thrust Washer
  • Pilot
  • Mounting Ring
  • Flathead Bolts (3)
  • Unit Size: 10"
  • Core: GM 245mm
  • Dampered: Yes
  • Lockup: Single-Plate
  • Transmission Unit: 4L80-E, 4L85-E
  • Turbine Hub Input Spline Count: 35

Where to Buy

  • Existing Customers: Contact your sales representative.
  • New Customers: Fill out the form and a sales representative will contact you.
  • 4L80-E (Dual Stator), 4L80-E (Early Single Stator), 4L80-E (Late Single Stator), 4L80-E, 4L85-E, Single-Plate Performance Converter (Mounting Ring) Performance Converter Mounting Ring Kit GM-RK-15

Sonnax Performance Converter Kits

Engineered to Deliver Builds that Last

Designed from the ground up to outperform OE and other aftermarket components, Sonnax has you covered with a full line of performance converter kits for gas and diesel vehicles. Offering the widest variety of options in the aftermarket, these innovative kits deliver customized performance and value.

  • Small/Large Diameter
  • Single-Plate/Multi-Plate/Non-Lockup
  • Dampered/Damperless


Choose the right kit for your rebuild!