No one knows transmissions & torque converters like

Sonnax

No one knows transmissions & torque converters like 2008-sonnax-logo-white

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Maybe it’s not the torque converter!

View Transmission Parts for Resolving & Preventing Torque Converter Problems

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Increase Your Torque Capacity with Sonnax Multi-Plate Converter Clutch Kits

To upgrade the torque converter, Sonnax offers heavy duty multi-plate converter clutch kits with all the components needed to build a complete piston/damper assembly tuned to your specifications.

  • Utilizes three high thermal, high-torque capacity friction elements
  • Improved oil flow across clutch plates
  • Improved spring end caps prevent over-compression
  • Reduced overall weight
  • Clear step-by-step instructions for easy installation
  • Increased strength cover
See All Sonnax Multi-Plate Converter Clutch Kits

Nobody knows torque converters like Sonnax.

Sonnax is the world's leading supplier of aftermarket torque converter components for domestic, import, industrial, racing and heavy-duty converters. Our extensive selection of parts combines the latest in automotive technology with outstanding reliability, performance and durability for long-lasting, trouble-free rebuilds.

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Sonnax Racekits

Sonnax 8" and 10" non-lockup racekits are popular with converter rebuilders supplementing their stock rebuild with performance units for drag, sand rail, rock climbing, swamp buggy and mud racing.

New for 2014 – Fully Machined Front Covers!

Sonnax racekits traditionally featured partially machined front covers, with much of the outer face remaining as forged. In response to many requests from rebuilders to offer fully machined covers, Sonnax is pleased to announce this upgrade is now complete for all the 8" and 10" racekits.

Sonnax also pressed bushings into place on all covers except that found in the FD-RK-1 so that rebuilders no longer need to spend time on this step.

Stay Ahead of the Pack with Sonnax Racekits

  • Fully machined cover with bushing installed
  • Unit-specific design for hassle-free installation
  • Oil flow grooves and holes increase fluid flow to keep converters running cooler
  • Turbine hub features a larger flanged diameter to increase strength and rigidity of the turbine.
  • Clear, detailed instructions

Keep up-to-date with the latest news from Sonnax by becoming a Sonnax Insider today!

See All Sonnax Racekits

All Upgraded Racekits

Application Part No.
Ford
10" Racekit AOD FD-RK-1
10" Racekit C4 10" & 11" FD-RK-3
10" Racekit C6 FD-RK-4
10" Racekit C4 11" FD-RK-9
GM
10" Racekit 4L60 GM-RK-9
27 Spline
GM-RK-10
30 Spline
10" Racekit Powerglide®, 350, 400 GM-RK-1
30 Spline
GM-RK-1S
Small Bolt Pattern
GM-RK-7
17 Spline
8" Racekit 350 & 400 GM-RK-2
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New Parts

Stator Cap Stator Cap
CH-WS-27

Sonnax stator cap CH-WS-27 replaces worn or damaged impeller-side stator caps in Chrysler 62TE converters.

  • Harder than OE cap for increased durability

  • Outer Notch Count: 9
  • Outer Dia.: 3.665"
  • Inner Dia.: 1.660"
  • Thickness: 0.220"
  • Material: Steel
 
Stator Cap Stator Cap
CH-WS-26

Sonnax stator cap CH-WS-26 replaces worn or damaged turbine-side stator caps in Chrysler 62TE converters.

  • Harder than OE cap for increased durability

  • Outer Notch Count: 9
  • Outer Dia.: 3.640"
  • Inner Dia.: 1.660"
  • Thickness: 0.220"
  • Material: Steel
 
Seal Ring Seal Ring
FD-O-31V

Sonnax seal ring FD-O-31V replaces worn or damaged inner piston seals in Ford 6R140 6.2L (4-Stud) torque converters.

  • Inner Dia.: 7.816"
  • Width: 0.085"
  • Height: 0.140"
  • Seal Style: D-Ring
  • Material: Fluorocarbon
 
Clutch Plate Clutch Plate
FD-CP-140

Sonnax clutch plate FD-CP-140 replaces worn or damaged clutch plates in Ford 6R140 converters. The Sonnax plate features OE-style segmented friction rings bonded to each side.

  • Outer Dia.: 11.500"
  • Inner Dia.: 9.770"
  • Thickness: 0.118"
  • Tab Count: 30
  • Tab Style: Internal Flat
 
Thrust Bearing Thrust Bearing
FD-N-14

Sonnax enclosed thrust bearing FD-N-14 directly replaces worn or damaged thrust bearings on the impeller-side of the stator in Ford 6R80, 280mm converters.

  • Outer Dia.: 3.670"
  • Inner Dia.: 2.620"
  • Thickness: 0.162"
  • Material: Hardened Steel
  • Bearing Style: Enclosed
 
Friction Ring Friction Ring
B45044HTE

  • Thickness: 0.045"
  • Outer Dia.: 9.563"
  • Inner Dia.: 8.500"
  • Material: HTE
 
Friction Ring Friction Ring
B66044HTE

  • Thickness: 0.066"
  • Outer Dia.: 9.563"
  • Inner Dia.: 8.500"
  • Material: HTE
 
Friction Ring Friction Ring
B66500HTE

  • Thickness: 0.066"
  • Inner Dia.: 9.188"
  • Outer Dia.: 10.500"
  • Material: HTE
 
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