Brake Booster Vacuum Pump For Cadillac Chevy Buick Volvo Straight Up Reliable Direct Fit Easy Install Heavy Duty Construction No Drama Swap Vehicle Reference Numbers 20804130 And 20939309 Rock Solid Performance
✔️ Direct fit brake pump replaces OE up28 for solid stopping power
This single pack brake booster vacuum pump provides steady suction power to maintain firm pedal feel across GM and Volvo platforms. Mechanics and daily drivers install it directly onto engine manifolds to restore original braking assist without extra adapters or wiring.
✅ Matches factory reference codes up28 and 20804130 for exact mounting✅ Sealed internal rotors handle consistent rpm under heat stress
✅ Pretested diaphragm seal prevents vacuum leaks right out of the box
✅ Bolt-on design works straight into buick regal cadillac cts and solstice frames
💡 What causes loss of pedal assist when a cam-driven booster pump seizes?
Fresh internal flow restores normal braking leverage so you stop predictably every mile. Grab a handy upgrade and see these core updates deliver immediate traction:
- Twin lobe rotors spin smoothly at idle to generate constant suction load
- Metal sealing rings block crankcase gases from mixing with brake fluid paths
- Flat face gasket surfaces wipe clean rust and prevent sudden air ingress
- Standard bolt spacing aligns perfectly with aftermarket performance intake manifolds