Seat and seal your PCV valve with the Dorman - HELP PCV Valve Grommet 42056, a push-on rubber grommet that drops in as a direct replacement across a wide range of classic GM engines. It fits applications like the 1973-1975 Buick Apollo [L6-4.1L], 1982-1985 Buick Century [V6-3.0L], 1976-1993 Buick LeSabre [V6-3.8L], and 1985-1990 Buick Electra [V6-3.8L], plus many more — see the Buyer's Guide tab for the full list.
The grommet holds the PCV valve in its mounting opening and forms a tight seal around it, so crankcase vapors are routed through the intended PCV path. If a cracked, hardened, or missing original grommet is behind a vacuum leak or oil weeping around the PCV valve, this part replaces it.
- Direct replacement: built to match the original grommet's fit and function on the listed applications.
- Rubber construction: molded from rubber for a durable, reliable seal.
- Push-on installation: seats into the mounting opening without tools.
- Sized to spec: 0.418 in inside diameter, 1.299 in outside diameter, and 0.5 in thick.
Backed by Dorman's product experts and more than a century of automotive experience. Manufacturer part number 42056. Country of origin: Taiwan.
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this grommet do?
It holds the PCV valve in its mounting opening and seals around it, keeping crankcase vapors routed through the intended PCV path rather than leaking out around the valve.
Will it fit my vehicle?
It's a direct-fit replacement for a wide range of applications, including many classic GM models such as the Buick Apollo, Century, LeSabre, and Electra. Check the Buyer's Guide tab to confirm your exact year, make, model, and engine.
What is it made of and what size is it?
It's molded from rubber, with a 0.418 in inside diameter, 1.299 in outside diameter, and 0.5 in thickness.
What are signs the grommet may need replacing?
A grommet that is cracked, hardened, or missing can let the PCV valve sit loose or leak. If a failed grommet is causing a vacuum leak or oil weeping around the valve, replacing it addresses that.
How does it install, and what's the part number?
It's a push-on grommet that seats into the mounting opening without tools. The manufacturer part number is 42056; country of origin is Taiwan.
Write a Review