No one knows transmissions & torque converters like
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.
Where to Buy
View Sonnax Part Instructions
Enter a Sonnax part number below to view its instructions. For general reaming instructions, click here.
TWO THUMBS UP. I am a loyal user of Sonnax products and they are a company that puts their customers first. Thank you for great products, and I look forward to future products!
B. Cole, Toronto, ON
6L45, 6L50, 6L80, 6L90
Pump Bushing 104034A
Not for use in 6L45 BMW models, which have a bearing in that position.
My customers depend on me to keep their vehicles on the road. I depend on Sonnax to help me do that. Thanks Sonnax!
S. Moore, Moore's Transmission
Latest News
Top Shop Product Winners of 2024
Every year, Transmission Digest accepts nominations for the top products and tools in the powertrain aftermarket. Readers vote for their favorites to determine the winners.
The results are in: we won 9 top product awards! Thank you all for your trust and support of Sonnax and Rostra products – we couldn’t have done it without you.
Take a look at the winning products here:
- Chrysler 42/44/46/47/48RE (’00–Later) Rostra Governor Pressure Sensor
- Chrysler 68RFE Bushing Kit
- Ford 6R60/75/80 & ZFHP26 Heavy Duty Overdrive "E" Piston
- GM 4L60/E Series Heavy Duty Input Shafts
- GM 4L60/E Series Input Housing Forward Sleeve Kit
- GM 6L45/50 & 6L80/90 Bushing Kits
- GM 6L80/90 Remanufactured TEHCMs
- GM 6L80/90 The Sure Cure® Kit
- ZF8HP55/70/75 Heavy Duty "D" Clutch Backing Plate
Sonnax Holiday Hours
Heads up! We’re taking a few days off for the holidays to spend treasured time with our families and enjoy the holiday cheer.
Sonnax will be closed:
- Dec. 22
- Dec. 25
- Dec. 29
- Jan. 1
Thank you for all your support. Wishing you a happy, healthy and prosperous New Year!
Read MoreRostra Adds 13 OEM/S Solenoids & Modules
Sonnax Transmission Company is excited to announce the addition of 13 solenoids and modules to the Rostra Powertrain Controls product group beginning this October. The company has secured these SKUs in an agreement to succeed BorgWarner as the distributor for their OE solenoid supplier, Solero Technologies.
This distribution program represents an important opportunity to support the Sonnax mission: to be the leader in bringing innovative, high-quality drivetrain components to the automotive aftermarket.
Look for this icon at www.rostrapowertrain.com to identify authentic OEM/S parts supplied by Rostra and contact your distributor today!
Upcoming Events
PRI Show 2024
Indianapolis, IN
December 12, 2024, 9:00AM - December 14, 2024, 4:00PM
Learn MoreI am a Sonnax fan because no matter if I am rebuilding an everyday transmission or a race transmission, I can trust the quality of the Sonnax parts I choose.
C. Lentech, Lentech Automatics
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