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4L80-E, Single Plate Performance Converter


Part No.


  • Racekit


4L80-E, Single Plate Performance Converter


Part No. GM-RK-15

  • Impeller Hub
  • Inner Stator Race
  • Turbine Hub
  • Thrust Washer
  • Pilot
  • Mounting Ring
  • Bolts (3)

  • Turbine Hub Input Spline Count: 35
  • Unit Size: 10"
  • Core: GM 245mm
  • Dampered: Yes
  • Lock Up: Yes

Sonnax lockup racekit GM-RK-15 is designed to work with both early- and late-model 4L80-E transmissions and utilizes the GM 245mm core. The vertsatility 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
  • Patent No. 7,565,958

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

Learn more about Sonnax performance converter kits!

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