Description:

This Sonnax kit includes an oversized pressure regulator valve to restore correct clearances for proper hydraulic control, and a replacement reverse boost valve assembly.. . Improved PR/EPC reaction area ratio provides higher line rise response to EPC pressure, which results in noticeably firmer shifts.. Oversized pressure regulator valves are manufactured from hard-anodized aluminum to prevent wear.. PR valves have annular grooves to prevent side loading which results in wear.. The spring seat on the PR valves has been lengthened to compensate for the increased diameter..