OER 1970-80 Chevrolet, GMC Master Cylinder Cover Diaphragm Single Bail

Part Number: T3042B-OER

OER 1970-80 Chevrolet, GMC Master Cylinder Cover Diaphragm Single Bail

Part Number: T3042B-OER

Original price was: $11.44.Current price is: $9.95.

In Stock

( Inventory updated: 06/06/2026 )

Estimated ship date: 2-3 business days

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1970-80 Chevrolet, GMC Master Cylinder Cover Diaphragm – Single Bail

Upgrade your brake system with the high-quality Master Cylinder Cover Diaphragm, specifically designed for 1970-80 Chevrolet and GMC models. This essential component ensures optimal performance of your Delco Moraine power master cylinders, providing reliability and safety for your braking system. Tailored for those who appreciate quality and durability, this diaphragm is a perfect blend of functionality and value.

Key Features and Benefits:

  • Direct Replacement: This diaphragm fits seamlessly into models equipped with a 3″ x 5-3/4″ master cylinder cover, ensuring an easy installation process.
  • Enhanced Brake Performance: A well-functioning diaphragm helps maintain proper hydraulic pressure and efficiency in your braking system, crucial for safe driving.
  • Robust Construction: Made from high-quality materials to withstand wear and tear, providing longevity and dependability that you can trust.
  • Versatile Compatibility: Suitable for various applications within the Chevrolet, GMC, Buick, Oldsmobile, and Pontiac lineups, making it a valuable addition to your repair toolkit.

Technical Specifications:

  • Part Number: T3042B
  • Brand: OER

Fitment Information:

This master cylinder cover diaphragm is compatible with the following vehicle models:

  • Buick Applications:
    • 1973-1975 Buick Apollo
    • 1975-1979 Buick Skylark
  • Chevrolet Car Applications:
    • 1976-1980 Chevrolet Camaro
    • 1971-1980 Chevrolet Impala
    • 1971-1972 Chevrolet Biscayne
    • 1971-1975 Chevrolet Bel Air
    • 1971-1980 Chevrolet Caprice
    • 1973-1979 Chevrolet Nova
  • Chevrolet/GMC Truck Applications:
    • 1976-1980 Chevrolet (1/2 ton pickup models)
    • 1981-1986 Chevrolet (3/4 ton pickup with 12-1/2″ disc / 13″ x 2-1/2″ drum brakes)
    • 1982-1982 Chevrolet (1/2 ton pickup 1st design)
    • 1987-1991 Chevrolet (3/4 ton crew cab pickup)
    • 1976-1980 Chevrolet, GMC (1/2 ton Blazer/Jimmy)
    • 1981-1986 Chevrolet, GMC (3/4 ton Blazer/Jimmy)
    • 1982-1982 Chevrolet, GMC (1/2 ton Blazer/Jimmy 1st design)
    • 1972-1972 Chevrolet, GMC (1/2 ton Suburban models)
    • 1981-1986 Chevrolet, GMC (3/4 ton Suburban)
    • 1982-1982 Chevrolet, GMC (1/2 ton Suburban models 1st design)
    • 1987-1991 Chevrolet, GMC (3/4 ton Suburban)
  • Oldsmobile Applications:
    • 1975-1977 Oldsmobile Omega
  • Pontiac Applications:
    • 1970-1980 Pontiac Firebird (with power brakes)
    • 1971-1977 Pontiac Ventura
    • 1975-1977 Pontiac Phoenix

Experience improved reliability and performance with the 1970-80 Chevrolet, GMC Master Cylinder Cover Diaphragm. Perfect for enthusiasts and everyday drivers alike, this component is essential for maintaining your vehicle’s braking system. Invest in your vehicle’s safety and performance today!

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OER

Original Equipment Reproduction - OER - is the leading manufacturer and distributor of quality classic automotive restoration parts and accessories. OER products are meticulously manufactured to replicate the OEM appearance, quality and fit that meets or exceeds the original factory specifications.

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