GM 3994239 Nos Pcv Valve Cover Grommet General

( Brand: Gm ), ( Manufacturer Part Number: 3994239 ), ( Color: Black ), ( Items Included: Grommet Only ), ( Material: Rubber ), ( Vintage Part: Yes ), ( California Prop 65 Warning: This Product Can Expose You To A Chemical Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. ), ( Type: Valve Cover ), ( Manufacturer Warranty: No Warranty ), ( Packaging: Not In Package ), ( Country/region Of Manufacture: United States ), ( Finish: Matte ), ( Performance Part: No )

Review GM General Motors Nos Model's Pcv Valve Cover Grommet Part fits CORVETTE 1968–1978

The 1968 and 1978 Chevrolet Corvette PCV Valve Cover Grommet is a crucial component of the engine's positive crankcase ventilation (PCV) system. This grommet is specifically designed for GM Corvettes with the part number 3994239.

The PCV system is essential for reducing crankcase pressure and preventing harmful gases from escaping into the atmosphere. The valve cover grommet is the point where the PCV hose connects to the valve cover, allowing the gases to be routed back into the intake manifold and reburned in the engine cylinders.

This grommet is made from high-quality rubber material that provides a tight seal against the valve cover and the PCV hose. The rubber is resistant to oil, coolant, and other engine fluids, ensuring a long service life. The grommet's design allows for easy installation and removal, providing convenient access for maintenance or repair.

The 1968 and 1978 Chevrolet Corvette PCV Valve Cover Grommet is a replacement part that may be needed if the original grommet becomes worn, cracked, or damaged. Signs of a failing grommet may include engine roughness, loss of power, or check engine lights. Installing a new grommet can help improve engine performance, reduce exhaust emissions, and prevent potential engine damage.

In summary, the 1968 and 1978 Chevrolet Corvette PCV Valve Cover Grommet is a vital sealing component of the PCV system. Made from high-quality rubber material, this grommet provides a tight seal against the valve cover and the PCV hose, ensuring efficient gas routing and engine performance. This replacement part is an essential investment for Corvette owners looking to maintain their vehicle's engine health and longevity.

PCV Valve Cover Grommet for 1968-1978 Corvette: A Comprehensive Analysis

The PCV (Positive Crankcase Ventilation) valve cover grommet is an essential part of the Corvette's emission control system. This grommet connects the PCV valve to the intake manifold and allows the recirculation of crankcase gases. When this grommet fails, it can result in various engine issues, including check engine lights and decreased performance. In this analysis, we will discuss the pros and cons of replacing the PCV valve cover grommet in a 1968-1978 Corvette.

1. Improved Engine Performance: A faulty PCV valve cover grommet can lead to decreased engine performance. Replacing the grommet can help restore the engine's efficiency and improve overall performance.

2. Check Engine Light Elimination: A failing PCV valve cover grommet can trigger the check engine light. Replacing the grommet can help eliminate the check engine light and prevent potential further engine damage.

3. Preventing Future Issues: A new PCV valve cover grommet can help prevent future issues and potential engine damage caused by leaking crankcase gases.

1. Cost: Replacing the PCV valve cover grommet is not a cheap repair. The cost can range from $150 to $350, depending on the labor costs and the specific parts required.

2. Time-Consuming: Replacing the PCV valve cover grommet is a labor-intensive process. It requires removing the intake manifold and the old grommet, installing the new grommet, and reassembling the engine.

3. Potential for Further Damage: If the engine has significant wear or damage, replacing the PCV valve cover grommet may not completely solve the issue. Further engine repairs may be necessary.

The decision to replace the PCV valve cover grommet in a 1968-1978 Corvette depends on various factors, including the vehicle's condition, the owner's budget, and personal priorities. If the engine is in good condition and the check engine light is bothering the owner, replacing the PCV valve cover grommet may be a worthwhile investment. However, if the engine is showing signs of significant wear or damage, it may be more cost-effective to consider other engine repairs or even a rebuild. Ultimately, a thorough engine inspection by a professional mechanic can help determine the best course of action for each specific situation.

If you are considering replacing the PCV valve cover grommet in your 1968-1978 Corvette, it is recommended to consult with a professional mechanic to assess the engine's condition and provide an accurate estimate of the repair costs. A professional opinion can help you make an informed decision and prevent potential further engine damage.

Details:

NOS part no package, 5. This is a NOS 1968 - 1978 Corvette model's PCV Valve Cover Grommet GM Part # 3994239.

part #: 3994239 prices

• $9.99-$30.00

specifications rockercove:

• for models: Corvette
• for years: 1968-1978
• brand: Gm
• mpn: 3994239
• color: Black
• items included: Grommet Only
• material: Rubber
• vintage part: Yes
• california prop 65 warning: This Product Can Expose You To A Chemical Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm.
• type: Valve Cover
• manufacturer warranty: No Warranty
• packaging: Not In Package
• country/region of manufacture: United States
• finish: Matte
• performance part: No

payments rockercove:

• other
• credit card: Visa
• wallet: Apple-pay

offer rockercove:

• availability: In Stock
• sold: 0
• quantity: 1
• options: Ship-to-home
• started: July 27, 2025
• best offers: True

returns rockercove:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

general rockercove:

• Engines Engine Parts > Valvetrain Components > Rocker Valve Covers
• condition: New other see details

seller rockercove:

• city: Huntington Station, New York
• # reviews: 14815
• rating: 99.8%

shipping rockercove:

• type: Fixed
• class: Standard
• service: Standard
• transit: 4-9 Days
• cost: $0.00

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