Sonnax Spring for Transmission

Sonnax valve body springs are replacement springs for automatic transmission valve bodies. They are also called transmission valve springs, pressure regulator springs, or boost valve springs. Each spring controls valve movement and hydraulic pressure inside the valve body. That supports consistent shift timing, line pressure, and shift quality.

Key Features:

• Made for automatic transmission valve body applications
• Helps restore correct valve spring tension where original springs have worn, weakened, or fatigued
• Supports consistent hydraulic pressure control and shift feel
• Suited to transmission rebuilds and repairs of valve body wear and shift complaints
• Made by Sonnax, a name known in the aftermarket transmission industry for its engineered rebuilding components

Installing new springs during a valve body rebuild helps the transmission shift as designed and extends the life of the repair. Select the spring that matches your application from the individual listings in this product line.