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.
Vehicle Fitment:
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
| Make |
Model |
Years |
Engine |
Fitment Notes |
| Buick |
Skylark |
1965 |
6.6L / 401 / V8 |
BREATHER/OIL FILLER CAP; FLAT BLACK; PUSH-ON STYLE; 2.5 IN. DIA.; H-2 1/8 IN.; W/O LOGO; RACE ONLY; |
| Buick |
Skylark |
1966 |
6.6L / 401 / V8 |
BREATHER/OIL FILLER CAP; FLAT BLACK; PUSH-ON STYLE; 2.5 IN. DIA.; H-2 1/8 IN.; W/O LOGO; RACE ONLY; |
| Buick |
Skylark |
1967 |
6.6L / 400 / V8 |
BREATHER/OIL FILLER CAP; FLAT BLACK; PUSH-ON STYLE; 2.5 IN. DIA.; H-2 1/8 IN.; W/O LOGO; RACE ONLY; |
| Pontiac |
Grand Prix |
1965 |
6.9L / 421 / V8 |
BREATHER/OIL FILLER CAP; FLAT BLACK; PUSH-ON STYLE; 2.5 IN. DIA.; H-2 1/8 IN.; W/O LOGO; RACE ONLY; |
| Pontiac |
Grand Prix |
1967 |
7.0L / 428 / V8 |
BREATHER/OIL FILLER CAP; FLAT BLACK; PUSH-ON STYLE; 2.5 IN. DIA.; H-2 1/8 IN.; W/O LOGO; RACE ONLY; |
