Dorman 42059 PCV Valve Grommet - Rear

Dorman 42059 PCV Valve Grommet

Dorman 42059 is a rubber PCV valve grommet made to match the fit and function of the original grommet on specified vehicles. It is built for reliable sealing at the valve cover and direct replacement service on Jeep applications.

• Rubber construction for dependable sealing performance
• Push-on attachment method for OE-style installation
• Inside diameter: 0.712 in.
• Outside diameter: 1.29 in.
• Thickness: 0.45 in.
• Designed for PCV to valve cover use

OE-Style Replacement Fit

This PCV valve grommet is engineered to match the original part’s fit and function on selected Jeep models. It is a direct replacement for Jeep Wrangler, Cherokee, CJ7, Wagoneer, and related applications where the PCV valve mounts to the valve cover. Dorman 42059 also cross-references part numbers 420593 and 3237765 for the same application.

Vehicle Fitment

• Fits 1987-1990 Jeep Wrangler, N/A, 1/2 In.; PCV to Valve Cover
• Fits 1981-1987 Jeep J10, N/A, 1/2 In.; PCV to Valve Cover
• Fits 1984-1986 Jeep Cherokee, Rear, 1/2 In.; PCV to Valve Cover
• Fits 1983-1986 Jeep CJ7, Rear, 1/2 In.; PCV to Valve Cover
• Fits 1986 Jeep Comanche, Rear, 1/2 In.; PCV to Valve Cover
• Fits 1984-1986 Jeep Grand Wagoneer, N/A, 1/2 In.; PCV to Valve Cover
• Fits 1984-1986 Jeep Wagoneer, Rear, 1/2 In.; PCV to Valve Cover
• Fits 1983-1985 Jeep Scrambler, Rear, 1/2 In.; PCV to Valve Cover
• Fits 1981-1983 Jeep Cherokee, N/A, 1/2 In.; PCV to Valve Cover
• Fits 1981-1983 Jeep CJ5, N/A, 1/2 In.; PCV to Valve Cover
• Fits 1981-1983 Jeep Wagoneer, N/A, 1/2 In.; PCV to Valve Cover
• Fits 1981-1982 Jeep CJ7, N/A, 1/2 In.; PCV to Valve Cover
• Fits 1981-1982 Jeep Scrambler, N/A, 1/2 In.; PCV to Valve Cover

What This Part Helps Address

• Cracked or hardened PCV valve grommet material
• Loose PCV valve seating at the valve cover
• Oil vapor leakage around the PCV opening
• Vacuum leaks caused by a worn grommet seal
• Service issues on Jeep Wrangler and Jeep Cherokee PCV valve-to-valve cover setups

Installation Notes and Tips

Install the grommet by push-on fit at the valve cover opening, then seat the PCV valve securely into place. Confirm the valve cover opening size and application notes before installation, especially on Jeep Wrangler, Jeep Cherokee, and CJ-series vehicles. For best results, inspect the PCV valve and surrounding hose condition during service.

Quality Assurance

Dorman designs this replacement grommet to match original fit and function and to provide durable, reliable performance in service.