Dorman 42056
Rubber PCV valve mounting grommet with 10.62 mm inside diameter, 33.00 mm outside diameter and 12.70 mm thickness. GM OE 1381487.
Dorman 42056 is a rubber PCV valve mounting grommet. It secures the crankcase-ventilation valve in a valve cover or other specified opening and seals the connection against vacuum leakage and engine-oil seepage.
Application / fitment
The grommet is a direct replacement for GM 1381487 and appears in many classic American vehicles. Confirm the OE number, PCV-valve diameter and mounting-hole dimensions.
- part type: PCV valve mounting grommet
- Buick — selected 1968–1993 models
- Cadillac — selected 1976–1988 and 1990–1993 models
- Chevrolet and GMC — selected 1968–1993 models
- Oldsmobile and Pontiac — selected 1968–1993 models
- Jeep — selected 1969–1971 models
- OE number: General Motors 1381487
Remove the old grommet without damaging the valve cover and clean oil deposits from the opening. Lightly lubricate the new rubber with clean engine oil and press it in evenly. The PCV valve must fit tightly without tearing the grommet edge.
Technical information
- part type: rubber PCV valve mounting grommet
- material: rubber
- attachment method: push-on
- inside diameter: 0.418 in / 10.62 mm
- outside diameter: 1.299 in / 33.00 mm
- thickness: 0.500 in / 12.70 mm
- function: mounts and seals the PCV valve
- OE number: GM 1381487
- package contents: 1 grommet
- sale unit: 1 piece