SPRING CPC VALVE (M4RA/B4RA/A4RA)
# 51650

SPRING CPC VALVE (M4RA/B4RA/A4RA)

Fits '96–'99 A4RA, B4RA and M4RA. For use in early-style units with .260" deep spring pocket and .480" long spring.

Symptoms:

  • 2-3 Flare at light throttle
  • Harsh upshifts, downshifts & Forward

Cause:
A broken CPC (clutch pressure control) valve spring

Correction:
Sonnax CPC valve spring has a larger wire diameter, thereby decreasing total spring stress by more than 25%.


Common problems in the Honda/Acura A4RA, B4RA and M4RA transmissions are harsh upshifts, downshifts and Forward engagements, while Reverse engagement is fine. These problems can be caused by a broken CPC (clutch pressure control) valve spring. The spring is located in the secondary valve body and is not available from Honda. The Sonnax CPC valve spring has a wire diameter larger than the OE design. This significantly reduces the stress on the spring, preventing future breakage.

SONNAX Installation Instructions

Type of Product: Springs & One Way Clutches
Years: