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Mr. Gasket 9810BP Push-On Breather - Flat Black

Part # 9810BP Be the first to write a review

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

Mr. Gasket 9810BP Push-On Breather - Flat Black

Estimated Ship Date: 06/15/2026
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3

Emissions

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles.

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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.
Brand Mr. Gasket
Emission Code3
Product TypeValve Cover Breathers
WarrantyManufacturer's Limited 90 Day
UPC084041034668
Manufacturer Part Number9810BP
Part Number9810BP
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
Manufacturer's Limited 90 Day: See Details
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    Some parts are not legal for use in California or other states with similar regulations.