Check the listing for details. FOR GM CHEVY DISC/DRUM BRAKE ACDELCO PROPORTIONING VALVE PV4. Condition: New. Listed at 39.74 USD. Item number: AR5343Product description: Type: Proportioning Valve Other Part Number: PV4 , PB215, 172-1361 OE/OEM Part Number: PV4-9 Superseded Part Number: PV4-9 100% Brand new and high-quality made Material:Brass Interchange Part Number: PV4 , PB215, 172-1361 Placement on Vehicle: Front Manufacturer Part Number: PV4-9 Color: YellowFeatures: This is a UNIVERSAL Combination Valve, Disc/Drum brakes, Brass; Exact Copy of Original AC DELCO style proportioning-combination valve in brass. carry individual proportioning valves for your customized application. Works on , and MOPAR. Works on , and MOPAR. These combination-proportioning valves are based on the popular AC DELCO 172-1361 (disc-disc) valves. When upgrading your vehicle from drum to disc, these small items are a must. These components ensure proper fluid transfer and contain a residual pressure valve for proper braking feel. These valves contain a low pressure shut off valve and warning light switch to ensure driver and vehicle safety should your brake system lose hydraulic line pressure. Aftermarket imported master cylinders with built in adjustable proportioning valves DO NOT feature this and could put you and your vehicle at risk.Package included: 1 X Combination Proportioning Valve PV4