{"product_id":"ldminda-proportioning-valve-pv2-brass-for-disc-drum-brakes-direct-fit-oem-replacement-172-1353","title":"LDMINDA Proportioning Valve PV2 Brass for Disc\/Drum Brakes — Direct-Fit OEM Replacement 172-1353","description":"\u003cp\u003e\u003cstrong\u003eThe LDMINDA PV2 is a solid-brass combination proportioning valve that balances brake pressure for vehicles with front disc and rear drum brakes, replacing GM part 172-1353\/25509419.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis heavy-duty PV2 valve is engineered as a direct-fit replacement for older OEM combination valves used on many classic Chevrolet, GM and Ford vehicles when converting or maintaining disc\/drum braking systems. Built from solid brass to resist corrosion and wear, it replicates the original AC Delco-style design and works with dual-reservoir master cylinders to regulate fluid flow, preserve residual pressure and provide a dependable warning path in case of system failure.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the PV2 valve affect braking balance during a drum-to-disc upgrade?\u003c\/h3\u003e\n\u003cp\u003eThe PV2 proportioning valve modulates rear brake line pressure so the front disc brakes engage before the rear drums in heavy stops, helping prevent rear-wheel lockup. It also preserves a small residual pressure to improve pedal feel and maintain drum shoe clearance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBrass body resists corrosion for consistent valve function.\u003c\/li\u003e\n  \u003cli\u003eIncludes residual pressure feature for reliable pedal response.\u003c\/li\u003e\n  \u003cli\u003eDesigned to match OEM flow characteristics for disc\/drum setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this valve fit my classic GM Chevy or Ford truck?\u003c\/h3\u003e\n\u003cp\u003eThe PV2 is a universal replacement for many dual-reservoir master cylinder systems and is specifically specified to replace GM part numbers like 172-1353 and 25509419. Compatibility is high with classic Chevrolet, GM and many Ford models that used combination proportioning valves for front disc\/rear drum brakes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces manufacturer part numbers 172-1353 and 25509419.\u003c\/li\u003e\n  \u003cli\u003eWorks with most OEM dual-reservoir master cylinders.\u003c\/li\u003e\n  \u003cli\u003eBrake line port sizes commonly match 1\/2\" and 7\/16\" fittings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the construction and durability features of this proportioning valve?\u003c\/h3\u003e\n\u003cp\u003eThe valve is machined from solid brass for long life and reliability under brake-system conditions. LDMINDA tests components to meet OEM-style specifications so the valve performs consistently with original equipment over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid brass construction to resist rust and wear.\u003c\/li\u003e\n  \u003cli\u003eExact AC Delco-style architecture for fit and function.\u003c\/li\u003e\n  \u003cli\u003eManufactured and tested to meet common OEM tolerances.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install and what should I check after fitting the PV2 valve?\u003c\/h3\u003e\n\u003cp\u003eInstallation follows standard brake-line replacement procedures and requires proper line fittings and torqueing to prevent leaks. After installation, bleed the brake system and verify pedal firmness, line integrity and proper front-to-rear braking balance before normal driving.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse matching 1\/2\" and 7\/16\" line fittings where applicable.\u003c\/li\u003e\n  \u003cli\u003eThoroughly bleed both circuits to remove air pockets.\u003c\/li\u003e\n  \u003cli\u003eInspect for leaks and test braking balance in a safe area.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis LDMINDA PV2 brass combination proportioning valve is for classic-car owners, restoration shops and DIY mechanics who need a reliable replacement for original GM-style combination valves or are upgrading brake systems from drum to disc. It suits vehicles that use dual-reservoir master cylinders and require OEM-like flow control and residual pressure behavior. Backed by LDMINDA’s one-year service support, it’s intended for anyone seeking a durable, OEM-compatible proportioning valve for maintenance or restoration projects.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the PV2 replace part 172-1353?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This LDMINDA PV2 is specified to replace GM part 172-1353 and 25509419 for disc\/front drum\/rear drum applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will it fit my dual-reservoir master cylinder?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Generally yes; the valve is designed for most dual-reservoir master cylinders with common 1\/2\" and 7\/16\" brake line ports.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"LDMINDA","offers":[{"title":"Default Title","offer_id":67587564568761,"sku":"B0B12ZMM6X","price":102.59,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/ldminda-pv2-front-view-valve.jpg?v=1790512982","url":"https:\/\/redleafauto.ca\/products\/ldminda-proportioning-valve-pv2-brass-for-disc-drum-brakes-direct-fit-oem-replacement-172-1353","provider":"Redleaf Auto","version":"1.0","type":"link"}