Excessive Renault/Peugot AL-4 and DPO plunger valve and bore wear results in high line pressure conditions. Excessive wear of the pressure regulator valve and bore in these units may cause low, high or unstable line pressure issues. Reconditioning the bore and installing Sonnax oversized pressure regulator valve kit 120940-01K restores correct pressure regulator and plunger valve operation to provide appropriate line pressure for all operating conditions.

Salvages valve bodies for reuse
Restores nominal OE line pressure and eliminates related shift problems
Hardcoat anodized aluminum valves combat premature wear

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