OE Quality
60-Day Returns

Dorman 42088 PCV Valve Grommet
Reliable PCV Valve Grommet for Jeep Cherokee, Comanche, and Wagoneer
The Dorman 42088 PCV valve grommet is designed to provide a secure and durable seal for the positive crankcase ventilation system in select Jeep models. Made from high-quality rubber, this grommet ensures proper fit and function for your Jeep Cherokee, Comanche, and Wagoneer.
- Constructed from durable rubber material for long-lasting performance
- Inside diameter of 0.22 inches for precise PCV valve fitment
- Thickness of 0.82 inches to maintain a tight seal
- Outside diameter of 1.31 inches for compatibility with OEM specifications
- Push-on attachment method for straightforward installation
- Compatible with Jeep Cherokee, Comanche, and Wagoneer models
Detailed Description of the Dorman 42088 PCV Valve Grommet
This PCV valve grommet by Dorman is engineered to meet the exact specifications required for proper emission control system operation in Jeep vehicles. The rubber construction provides flexibility and resistance to heat and oil exposure, which are common in engine compartments. With an inside diameter of 0.22 inches and an outside diameter of 1.31 inches, the grommet fits securely around the PCV valve, preventing leaks and ensuring efficient ventilation of crankcase gases. The 0.82-inch thickness adds to the durability and sealing capability, while the push-on attachment method simplifies replacement without the need for additional tools or fasteners.
Common Applications and Issues Addressed
- Prevents vacuum leaks in the PCV system of Jeep Cherokee, Comanche, and Wagoneer
- Eliminates oil leaks around the PCV valve connection point
- Maintains proper crankcase ventilation to reduce engine emissions
- Helps avoid rough idling or engine performance issues caused by faulty seals
- Replaces worn or cracked grommets to restore emission system integrity
Installation Notes and Tips
When installing the Dorman 42088 PCV valve grommet, ensure the engine is cool to avoid injury. Remove the old grommet carefully to prevent damage to the PCV valve or surrounding components. The push-on design allows for easy placement; press the grommet firmly onto the valve stem until fully seated. Verify that the grommet is properly aligned and sealed to prevent vacuum leaks. Regular inspection of the PCV system is recommended to maintain optimal engine performance.
Quality Assurance and Warranty Information
Dorman manufactures the 42088 PCV valve grommet to meet or exceed OEM standards for fit, form, and function. The rubber material is selected for durability and resistance to engine environment conditions. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in material and workmanship. For detailed warranty information, refer to Dorman's official documentation or contact the manufacturer directly.
| Brand | Dorman |
| Part Number | 42088 |
| Material | Rubber |
| Inside Diameter | 0.22 |
| Thickness | 0.82 |
| Outside Diameter | 1.31 |
| Attachment Method | Push on |
| Package Contents | Grommet |
This part fits 12 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1990 | Jeep | Cherokee | 4.0L | L6 | N/A | PCV valve grommet fits onto valve cover |
| 1990 | Jeep | Comanche | 4.0L | L6 | N/A | PCV valve grommet fits onto valve cover |
| 1990 | Jeep | Wagoneer | N/A | PCV valve grommet fits onto valve cover | ||
| 1989 | Jeep | Cherokee | 4.0L | L6 | N/A | PCV valve grommet fits onto valve cover |
| 1989 | Jeep | Comanche | 4.0L | L6 | N/A | PCV valve grommet fits onto valve cover |
| 1989 | Jeep | Wagoneer | N/A | PCV valve grommet fits onto valve cover | ||
| 1988 | Jeep | Cherokee | 4.0L | L6 | N/A | PCV valve grommet fits onto valve cover |
| 1988 | Jeep | Comanche | 4.0L | L6 | N/A | PCV valve grommet fits onto valve cover |
| 1988 | Jeep | Wagoneer | N/A | PCV valve grommet fits onto valve cover | ||
| 1987 | Jeep | Cherokee | 4.0L | L6 | N/A | PCV valve grommet fits onto valve cover |
| 1987 | Jeep | Comanche | 4.0L | L6 | N/A | PCV valve grommet fits onto valve cover |
| 1987 | Jeep | Wagoneer | 4.0L | L6 | N/A | PCV valve grommet fits onto valve cover |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.