A618, 47RH/RE, 48RE (310mm) Multi-Plate Performance Converter, BorgWarner 310mm LU (A618, 47RH/RE, 48RE)

Performance Converter Kit
Part No. BW-RK-5

This unit requires the use of Sonnax Smart-Tech® big input shaft kit 22121B-08K.

View Instructions

When diesel trucks are modified for either racing or street use, OE clutch plates slip and just do not hold. Limited damper capacity further cripples performance. Upgrading to an aftermarket multi-plate converter is the only solution.

Sonnax performance converter kit BW-RK-5 improves holding capacity in the BorgWarner 310mm converter without sacrificing stock shift action. Clear instructions, minimal setup and easy assembly make these foolproof upgrades. All-new kit components eliminate the rework and limitations associated with salvaged parts.

Enhanced design features include:

  • Fully-machined, forged piston and custom damper rivets won’t bend under extreme lockup pressure
  • Piston is tested and proven to withstand bending up to 400 psi.
  • Spring end caps limit how far springs compress under load to prevent breakage
  • Increased oil flow improves cooling and lubrication of clutch plates
  • Patented piston/damper assembly absorbs up to 1,250 ft-lbs. of torque.
  • Three solid, non-segmented, high-thermal, high-torque capacity friction elements
  • Turbine Hub
  • Energizer Ring
  • Seal PTFE
  • Radial Lip Seal
  • Complete Damper Assembly
  • Clutch Plate with External Splines
  • Clutch Plate with Internal Splines
  • Front Cover Thrust Washer
  • Front Cover Assembly Bushing Installed
  • Core: Borg Warner 310mm
  • Dampered: Yes
  • Lockup: Yes
  • Transmission Unit: A618, 47RH, 47RE, 48RE
  • Clutch Material: HTE
  • 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.
  • A618, 47RH/RE, 48RE (310mm) Multi-Plate Performance Converter, BorgWarner 310mm LU (A618, 47RH/RE, 48RE) Performance Converter Kit BW-RK-5

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!