Dorman 42320 PCV Valve Grommet - Right

Reliable Dorman PCV Valve Grommet for Select GM Vehicles

The Dorman 42320 PCV valve grommet is designed to provide a secure and durable seal for the positive crankcase ventilation system in various Buick, Cadillac, Chevrolet, GMC, and Pontiac models. Made from quality rubber, this grommet ensures proper fit and function to maintain emission control system integrity.

• Constructed from durable rubber material for long-lasting performance
• Inside diameter of 0.74 inches for precise fitment
• Thickness of 0.96 inches ensures a tight seal
• Outside diameter measures 1.15 inches for compatibility with OEM specifications
• Push-on attachment method allows for straightforward installation
• Compatible with multiple GM models including Chevrolet C1500, Tahoe, and Cadillac Escalade

Detailed Product Description and Specifications

The Dorman 42320 PCV valve grommet is engineered to meet the exacting standards required for emission control hardware. Its rubber construction provides flexibility and resistance to heat and oil exposure, which are common in engine compartments. The grommet’s dimensions—0.74 inches inside diameter, 0.96 inches thickness, and 1.15 inches outside diameter—are designed to fit securely around the PCV valve, preventing leaks and ensuring proper ventilation of crankcase gases.

This part is compatible with a range of GM vehicles, including the Chevrolet C1500 Suburban, Cadillac Escalade, GMC Sierra models, Pontiac Firebird, and more. The push-on attachment method simplifies installation, reducing the need for additional tools or fasteners.

Common Applications and Issues Addressed

• Prevents vacuum leaks in the PCV system
• Maintains proper crankcase ventilation to reduce engine emissions
• Eliminates oil leaks around the PCV valve connection
• Helps avoid rough idling caused by faulty grommet seals
• Supports emission compliance for Buick, Chevrolet, and GMC vehicles

Installation Notes and Tips

• Ensure the engine is cool before beginning installation
• Remove the old grommet carefully to avoid damaging the PCV valve or surrounding components
• Clean the mounting area to remove oil and debris for a secure fit
• Push the Dorman 42320 grommet firmly onto the PCV valve until fully seated
• Verify the grommet is properly aligned and sealed before engine start-up

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 42320 PCV valve grommet undergoes rigorous quality control to ensure durability and reliable performance in emission control systems. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship.