PB9021CHR - GM A, F, X 9" Chrome Single Diaphragm Delco Style

Pirate Jack PB9021CHR – Universal 9" Delco-Style Chrome Brake Booster | GM 1955–1975

Give your classic GM power brakes that perform like factory and shine like a show car. The PB9021CHR is a brand-new 9" Delco-style power brake booster in a bright chrome finish. It’s the same booster as our PB9021CN, finished in chrome instead of zinc. The larger 9" diaphragm delivers strong, consistent assist with a factory feel, so it’s a natural choice for resto-mods, show cars, street rods and power brake conversions where you want the engine bay to stand out.

The standard GM 3-3/8" square stud pattern on the back bolts up to a wide range of GM cars from 1955 to 1975. The long threaded pushrod lets you set the pedal rod length to suit your setup.

Every booster is brand new, never rebuilt. Each one is quality control tested and approved before it ships and is backed by a limited lifetime manufacturer’s warranty.

Booster only. Mounting brackets, rod extension, clevis and master cylinder are not included. Reuse your existing brackets if they match the 3-3/8" square pattern, or choose the brackets that fit your vehicle.

Features

• 9" Delco-style power brake booster
• Polished chrome finish for a show-quality engine bay
• Standard GM 3-3/8" square stud pattern on the back
• Long threaded pushrod for adjustable pedal rod length
• Fits a wide range of GM cars from 1955–1975
• Brand new, not rebuilt or remanufactured
• QC tested and approved before shipping
• Limited lifetime manufacturer’s warranty

Popular GM Applications
This booster’s standard pattern fits more vehicles than we can list. The most popular include:

• Chevrolet: 1964–1972 Chevelle and El Camino; 1964–1967 Malibu; 1967–1969 Camaro; 1968–1974 Nova; 1970–1972 Monte Carlo
• Pontiac: 1964–1972 GTO and LeMans; 1964–1970 Tempest; 1967–1969 Firebird
• Oldsmobile: 1964–1972 Cutlass, F85 and Vista Cruiser; 1964–1971 442
• Buick: 1964–1972 Skylark; 1964–1969 Special

Fitment depends on your brackets, pedal assembly and master cylinder. Confirm your setup before ordering.

Want a factory-correct look? The PB9021CN is the same booster in a zinc finish.

Questions? Give us a call! The Pirate Jack team knows brakes and can help you confirm fitment and pick the right brackets for your car. Call us at 866-601-4455.

Factory-style performance with show-car shine. Order your PB9021CHR from Pirate Jack today.