Fits 1.22 Inch Diameter Valve Cover Holes. Replaces GM Breather 6421868 On Late 65-67 GM Big Block.

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This chrome plated breather, or oil filler cap, is internally baffled with filter. Very similar to the original equipment breather used on 1965-1967 Chevrolet 396-427 Big Blocks. GM (General Motors) #6421868. Fits valve cover openings with 1.22 inch diameter. Its overall dimensions are 2-1/8 inch tall and 2-1/2 inch in diameter.

• Integral Metal Baffle
• Grommet Included

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Information:

Holley Performance Emission Code 3: This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles. The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles: 1965 and older U.S. manufactured California Certified vehicles/1967 and older U.S. manufactured Federally Certified vehicles/1967 and older Foreign manufactured vehicle. The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle. The following vehicles are considered Emissions Controlled Vehicles: 1966 and newer U.S. manufactured California Certified vehicles/1968 and newer U.S. manufactured Federally Certified vehicles/1968 and newer Foreign manufactured vehicle

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Application Summary:

Year	Make/Model
1964-1967	Buick Electra
1965-1967	Buick Gran Sport
1965-1967	Buick Riviera
1965-1967	Buick Skylark
1965-1967	Buick Wildcat
1965-1967	Cadillac Calais
1965-1967	Cadillac DeVille
1965-1967	Cadillac Eldorado
1965-1967	Cadillac Fleetwood
1963	Chevrolet Bel Air
1965-1967	Chevrolet Bel Air
1963	Chevrolet Biscayne
1965-1967	Chevrolet Biscayne
1965	Chevrolet C20 Pickup
1965	Chevrolet C30 Pickup
1966-1967	Chevrolet Caprice
1966-1967	Chevrolet Corvette
1963	Chevrolet Impala
1965-1967	Chevrolet Impala
1965	Chevrolet K20 Pickup
1965	Chevrolet Suburban
1965	Pontiac Bonneville
1967	Pontiac Bonneville
1965-1967	Pontiac Catalina
1967	Pontiac Executive
1965	Pontiac Grand Prix
1967	Pontiac Grand Prix
1965	Pontiac Star Chief