Acura 46210-SD4-013 Dual Proportioning Valve Assembly

On Integra models, the proportioning valve is mounted on the right side strut tower, while on Legend models, it is located in front of the master cylinder, near the left wheel well, serving to limit hydraulic pressure to the rear brakes during heavy braking to prevent rear wheel lock-up. The valve is not serviceable; if malfunction is suspected, it should be checked by a dealer service department or a repair shop with the necessary pressure gauges. In the event of a defective valve, it can be replaced by unscrewing the brake lines with a flare-nut wrench if available and unbolting the valve from the strut tower or its mounting bracket. For Integra models, it is important to note that the bolt underneath securing the lower bracket to the valve must not be removed; instead, the entire bracket must be removed from the vehicle. After installing the new valve, the complete brake system should be bled.