View Transmission Parts for Resolving & Preventing Torque Converter Problems
Nobody knows transmissions like Sonnax.
Sonnax transmission products are the number one choice of large transmission remanufacturers, quality valve body rebuilders, and veteran independent specialists around the world. Our innovative parts are designed to address the root cause of automatic transmission problems, allowing rebuilders to salvage valve bodies with highly effective repairs.
Which Sonnax Kit is Right for Your Rebuild?
Line Pressure Booster Kits
Affordable kit for big performance without a big price tag.
The first step in correcting common shift problems.
The Sure Cure®
Comprehensive kit for big problems you don't want back.
The best parts for performance & heavy duty recalibration.