Sonnax 1-2 And 2-3 Accumulator Control Valve Kit E4OD 4R100

Sonnax 1-2 and 2-3 Accumulator Control Valve Kit for E4OD, 4R100 Shifting issues in Ford E4OD and 4R100 transmissions are often linked to wear and tear in the accumulator control valves. Over time, wear ridges develop in the valve bore, causing the valve to hang up during high-pressure shifts. This can block oil flow to the clutches, leading to soft shifts, gear loss, and burnt clutches. The Sonnax 1-2 and 2-3 accumulator control valve kit 36948-13K addresses these problems, providing a firmer-than-OE shift quality. Key Features: Step-machined valve spool allows full oil flow to clutches, preventing premature failure Reinforcement clip attaches to the OE clip to prevent over-stroking Spring shims enable selective pressure adjustments for improved shift quality Annular groove centers the valve in the bore, reducing future side-load wear Note: For optimal installation, use the Sonnax bore sizing tool 36948-12 (available separately) to prevent valve hang-up or sticking. While recommende