All Sonnax Parts

Sonnax designs, develops and manufactures the highest quality aftermarket automotive products. We are the world’s largest full-line supplier of torque converter parts, and offer transmission and specialty driveline components through a global network of parts distributors.

Transmission

Contact a Sonnax Parts Distributor.


Torque Converter, Power Train Savers®, Ring Gears & Harley-Davidson® Replacement Bearings

  • Existing Customers: Contact your sales representative.
  • New Customers: Fill out the form and a sales representative will contact you.

Aluminum Driveshaft Components

Contact your local driveline shop for availability. If you need assistance finding a shop, or if you would like to become a distributor, fill out the form and a Sonnax driveline product specialist will contact you.


Slip Yokes

Contact your Sonnax Performance Slip Yokes Distributor or your local driveline shop for availability. If you need assistance finding a shop, fill out the form and a Sonnax driveline product specialist will contact you.

Transmission Parts Torque Converter Parts High Performance & Heavy-Duty Parts Remanufactured Valve Bodies Driveline Parts Power Train Savers® Harley-Davidson® Bearings & Rollers Ring Gears
A340, A340E, A340F, A340H Oversized Pressure Regulator Valve Kit 97855-24K

A340 • A340E • A340F • A340H

Oversized Pressure Regulator Valve Kit 97855-24K

Replaces 3-spool pressure regulator valve in units with 3or fewer solenoids, Type 1 (8931 casting code).

    Helps cure:
  • Low line pressure
  • High line pressure
  • Poor shift quality
  • Low lube oil flow
  • Burnt clutches
A340, A340E, A340F, A340H Boost Valve Kit 97855-23K

A340 • A340E • A340F • A340H

Boost Valve Kit 97855-23K

Fits Type 1 (8931 casting code) with .566" dia. large spool.

    Helps cure:
  • Delayed engagement
  • Low line rise
  • Low line pressure in Reverse
  • High line pressure in Reverse
  • Erratic line pressure
  • Soft upshifts
  • Repeated clutch failure
A340, A340E, A340F, A340H Boost Valve Kit 97855-30K

A340 • A340E • A340F • A340H

Boost Valve Kit 97855-30K

Fits Type 1 (8931 casting code) with .546" dia. large spool.

    Helps cure:
  • Delayed engagement
  • Low line rise
  • Low line pressure in Reverse
  • High line pressure in Reverse
  • Erratic line pressure
  • Soft upshifts
  • Repeated clutch failure
A340, A340E, A340F, A340H Lockup Relay Valve Sleeve Kit 97855-27K

A340 • A340E • A340F • A340H

Lockup Relay Valve Sleeve Kit 97855-27K

Fits '84-'00, replaces 3 spool lockup relay valves in units with 3 or fewer solenoids, type 1 (8930 casting code).

    Helps cure:
  • No lockup
  • Overheated converter
  • Overheated fluid
  • Low cooler flow
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