Mahle 5820 Engine Cylinder Head Gasket

Mahle 5820 Cylinder Head Gasket

The Mahle 5820 engine cylinder head gasket is an OEM-standard composite gasket built for dependable sealing in a wide range of GM, Buick, Oldsmobile, Pontiac, Cadillac, Chevrolet, and Jeep applications. It is a direct-fit style replacement for vehicles such as the Buick Skylark, Chevrolet Caprice, and Pontiac Grand Prix where accurate head sealing is critical.

Key Features

• Composite cylinder head gasket material for consistent sealing performance
• OEM Standard item grade for service-replacement applications
• Thickness: 0.05 in. / 1.29 mm
• Cylinder bore diameter: 12.24 in. / 4.03 in.
• Gasket sealant not included
• Additional package contents: head gasket

Detailed Description

Mahle 5820 is a composite engine cylinder head gasket engineered for applications that require precise combustion sealing and stable compression retention. Mahle gaskets are used by OEMs and technicians worldwide, and this part follows that same service-focused approach with an OEM-standard construction. It is listed for a broad range of fitments, including 1964-1967 Buick Skylark, 1975-1985 Buick Regal, 1980-1985 Chevrolet Caprice, 1978-1985 Pontiac Grand Prix, and 1966-1971 Jeep CJ5. This part cross-references FEL-PRO 8723 PT-1 and Rol HG32590 for the same application.

What It Helps Address

• Combustion gas leakage between the cylinder head and engine block
• Coolant seepage caused by a worn or damaged head gasket
• Compression loss that can affect engine performance
• Oil and coolant mixing from a failed sealing surface
• Service replacement needs on older GM, Buick, Pontiac, Cadillac, Chevrolet, and Jeep engines

Installation Notes and Tips

Confirm engine code, bore size, and head configuration before installation. The fitment notes specify .055" over-bore applications and recommend cylinder head bolt replacement. Clean and inspect both mating surfaces carefully, and verify that the cylinder head and block are flat before assembly. Because gasket sealant is not included, follow the engine builder’s sealing procedure and torque sequence for the specific application. Fits 1986-1988 Buick Skylark, N/A; Fits 1975-1979 Buick Skylark, N/A; Fits 1964-1967 Buick Skylark, N/A; Fits 1985-1987 Oldsmobile 98, N/A; Fits 1981-1983 Oldsmobile 98, N/A; Fits 1985-1987 Oldsmobile Calais, N/A; Fits 1985-1987 Pontiac Grand Am, N/A; Fits 1979 Pontiac Grand Am, N/A; Fits 1976-1986 Buick LeSabre, N/A; Fits 1977-1986 Oldsmobile Delta 88, N/A; Fits 1975-1985 Buick Century, N/A; Fits 1975-1985 Buick Regal, N/A; Fits 1979-1985 Buick Riviera, N/A; Fits 1980-1985 Chevrolet Caprice, N/A; Fits 1980-1985 Chevrolet Impala, N/A; Fits 1983-1985 Chevrolet Monte Carlo, N/A; Fits 1978-1981 Chevrolet Monte Carlo, N/A; Fits 1982-1985 Oldsmobile Cutlass Ciera, N/A; Fits 1977-1985 Oldsmobile Cutlass Supreme, N/A; Fits 1980-1985 Pontiac Bonneville, N/A; Fits 1978-1985 Pontiac Grand Prix, N/A; Fits 1981-1985 Pontiac Parisienne, N/A; Fits 1978-1984 Chevrolet El Camino, N/A; Fits 1978-1984 Oldsmobile Cutlass Calais, N/A; Fits 1981-1984 Oldsmobile Toronado, N/A; Fits 1978-1983 Chevrolet Malibu, N/A; Fits 1980-1983 Oldsmobile Cutlass Cruiser, N/A; Fits 1980-1982 Cadillac DeVille, N/A; Fits 1982 Cadillac Eldorado, N/A; Fits 1980-1982 Cadillac Fleetwood, N/A; Fits 1981-1982 Cadillac Seville, N/A; Fits 1977-1982 Pontiac Grand LeMans, N/A; Fits 1981 Cadillac Eldorado, N/A; Fits 1980-1981 Chevrolet Camaro, N/A; Fits 1979-1981 Oldsmobile Cutlass, N/A; Fits 1977 Oldsmobile Cutlass, N/A; Fits 1977-1981 Pontiac Catalina, N/A; Fits 1977-1981 Pontiac Firebird, N/A; Fits 1981 Pontiac Laurentian, N/A; Fits 1977-1981 Pontiac LeMans, N/A; Fits 1975-1980 Buick Skyhawk, N/A; Fits 1978-1980 Chevrolet Monza, N/A; Fits 1978-1980 Oldsmobile Cutlass Salon, N/A; Fits 1976-1980 Oldsmobile Starfire, N/A; Fits 1976-1980 Pontiac Sunbird, N/A; Fits 1977-1979 Oldsmobile Omega, N/A; Fits 1978-1979 Pontiac Phoenix, N/A; Fits 1966-1971 Jeep CJ5, N/A.

Quality Assurance

Mahle supplies sealing products trusted in OEM and professional repair environments, and this gasket is built to OEM-standard expectations for fit and sealing performance. Verify all engine specifications against the vehicle and engine build before final assembly.