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CPP

Brake Booster, 1978-88 G-Body, w/ Dual Diaphragm

Part# : PB7887D
Sold As: Each
Ship Size: Oversize 3
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$314.99
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List Price: $346.95
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Estimated the week of 10/31/2026
Vehicle Specific View fitment for 9 models
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1978-88 G-Body, Dual-Diaphragm Brake Booster by CPP

Original-style power brake booster with dual diaphragms and factory firewall mounting configuration.

Replace your original power brake booster with this dual-diaphragm unit from Classic Performance Products (CPP). Designed as an original-style replacement, the booster uses a dual-diaphragm configuration to provide vacuum-assisted braking while maintaining the factory firewall mounting arrangement. It installs using the existing mounting holes or studs, making it suitable for replacing a worn or malfunctioning power brake booster. This booster is designed for 1978-88 Chevrolet Monte Carlo, 1978-87 Chevrolet El Camino, Buick Regal, Oldsmobile Cutlass and Pontiac Grand Prix, and 1978-83 Chevrolet Malibu models. Applications also include 1982 and 1984-87 Buick Grand National, 1983-86 Buick T-Type and 1982-86 Pontiac Bonneville. Verify the vehicle's brake booster configuration before ordering, as single-diaphragm and dual-diaphragm versions are available separately.

Features - Dual-diaphragm vacuum-assisted power brake booster - Original-style replacement design - Uses existing firewall mounting holes or studs - Designed for compatible GM G-body power brake applications - Sold individually

Notes

  • This item is Oversize 3, and is excluded from free ground shipping.
We aim to provide accurate and complete product information. If you notice anything incorrect, missing, or unclear, please let us know.
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1982 Buick Grand National  
1984–1987 Buick Grand National  
1978–1987 Buick Regal  
1983–1986 Buick T-Type  
1978–1987 Chevrolet El Camino dual diaphragm
1978–1983 Chevrolet Malibu dual diaphragm
1978–1988 Chevrolet Monte Carlo dual diaphragm
1978–1987 Oldsmobile Cutlass dual diaphragm
1982–1986 Pontiac Bonneville dual diaphragm
1978–1987 Pontiac Grand Prix dual diaphragm
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Brake Booster, 1978-88 G-Body, w/ Dual Diaphragm
CPP Brake Booster, 1978-88 G-Body, w/ Dual Diaphragm