Sonnax 139740-01K Oversized Pressure Regulator Valve Kit for ZF5HP24 Transmission

The Sonnax 139740-01K is an oversized pressure regulator valve kit designed specifically for ZF5HP24 and ZF5HP24A transmissions. This precision-engineered repair solution addresses common wear issues in the pressure regulator valve bore that can lead to serious transmission problems and component damage.

Common Problems This Kit Solves:

• High pressure spikes caused by wear at the inner portion of the bore, which can lead to broken drums, pistons, or other internal components
• Restricted converter and lubrication flow due to bore wear
• Low line pressure resulting from wear at the spring end of the bore
• Soft or delayed shifts caused by pressure loss
• Burnt clutches from insufficient line pressure

Key Features:

• Oversized valve design restores proper valve-to-bore clearances
• Annular oil grooves support the valve and significantly reduce future wear rate
• Maintains correct system pressures for reliable transmission operation
• Includes replacement valve and spring

Installation Note: This kit requires special installation tools for bore reconditioning. Sonnax tool kit F-139740-TL (sold separately) and the VB-FIX self-aligning valve body reaming fixture are required for proper installation.

This valve kit is an essential repair component for transmission rebuilders addressing pressure regulation issues in ZF5HP24 and ZF5HP24A automatic transmissions commonly found in BMW, Audi, Jaguar, and other European vehicles.