Badass Drum Brake Proportioning Valve Cast Solid With Quality Brass To Boost Stopping Power For Every Wheel Works Like A Charm For Old School Pontiac Lemans Drivers Since Sixty Four

Heavy Duty Brake Proportioning Valve For Classic Muscle Cars
✔️ One solid brass valve arrives ready to swap onto vintage brake lines

This replacement brake proportioning valve splits fluid pressure evenly so your front calipers stop without grabbing the rear drums too quickly. You drop it into early sixties through seventies GM coupes and sedans running stock brakes or upgraded disc swaps. You receive one prop valve per box to restore predictable pedal feel without chasing leaks or buying aftermarket adapters.

✅ Brass alloy inner seals resist cracking under heavy street load pressures
✅ Two 3/8-24 front fittings and one 9/16-18 rear port match classic line layouts
✅ Replaces factory numbers 172-1350, 172-2187, 172-2174, 172-1364, 172-1363, 172-1353
✅ Fits Pontiac LeMans, GTO, Tempest, Cutlass, 442, Skylark, and Chevy runs

💡 What causes uneven front and rear brake bias on classic GM coupes and sedans? Worn factory valves crack internally and ruin pedal response. Dropping a sealed brass unit into the hydraulic circuit keeps the pressure split precise. It is a handy fix for old school drivers who want punchy stops without tweaking lines daily. - Machined throttle ports deliver straight fluid flow to calipers and wheel cylinders
- Thick wall bronze cores block rust formation near frame rail mounting spots
- Standard inch bores slide right into vintage rubber lines without extra adapters
- Regulated pressure cutoff saves rear tires from skating out during panic stops

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