3.8L Engine Intake Manifold Gasket Set for 95-09 Buick Chevy Oldsmobile Pontiac

This 3.8L Engine Intake Manifold Gasket Set is a complete intake manifold sealing kit compatible with 1995-2009 Buick, Chevrolet, Oldsmobile, and Pontiac models equipped with the 3.8L V6 engine.

Product Overview

The 3.8L Engine Intake Manifold Gasket Set provides a critical seal between the intake manifold and cylinder heads, preventing coolant, oil, and vacuum leaks that can cause rough running and engine damage. Designed for GM 3800 Series engines, this intake manifold gasket set restores factory sealing performance on high-mileage Buick, Chevy, Oldsmobile, and Pontiac vehicles. The 3.8L Engine Intake Manifold Gasket Set includes all necessary gaskets and seals for a complete upper or lower intake manifold repair.

Key Features & Performance

• Complete kit includes intake manifold gaskets, end seals, and O-rings for a thorough reseal
• Premium composite construction with silicone sealing beads withstands extreme heat and pressure cycles
• Precision-cut design matches OEM intake port shapes and bolt holes for drop-in fitment
• Eliminates hard-to-diagnose vacuum leaks that trigger lean codes and rough idle
• Compatible with both naturally aspirated and supercharged (L67) 3.8L engines – verify gasket profile
• Resistant to degradation from engine oil, Dex-Cool coolant, and combustion byproducts

Fitment & Compatibility

• Buick: LeSabre (1995–2005), Park Avenue (1995–2005), Regal (1995–2004), LaCrosse (2005–2009), Lucerne (2006–2008) – 3.8L V6 engines
• Chevrolet: Impala (2000–2005, 2006–2009 3.8L), Monte Carlo (2000–2005, 2006–2007 3.8L), Camaro (1995–2002), Lumina (1997–2001) – 3.8L V6
• Oldsmobile: Eighty Eight (1995–1999), Ninety Eight (1995–1996), Intrigue (1998–2002), Silhouette (1995–2004) – 3.8L V6
• Pontiac: Bonneville (1995–2005), Grand Prix (1997–2008), Firebird (1995–2002) – 3.8L V6

Common Uses

• Sealing intake manifold after removal for repairs like fuel injector, thermostat, or spark plug service
• Replacing deteriorated factory plastic gaskets that are prone to warping and leaking coolant
• Correcting intermittent misfire and lean diagnostic trouble codes (P0171, P0174) caused by vacuum leaks
• Preventative reseal during 3.8L engine rebuilds or top-end overhauls
• Restoring proper torque and seal integrity on high-mileage daily drivers and fleet vehicles

Technical Specifications

• Engine Displacement: 3.8L (3800 Series II & III)
• Material: High-temperature composite with silicone sealing beads
• Kit Contents: Intake manifold gaskets, end seals, and associated O-rings (count varies by set)
• Application: GM 3.8L V6 (naturally aspirated & supercharged L67) – upper/lower intake
• Service Interval: Replace whenever intake manifold is removed or at first sign of coolant/oil seepage

Frequently Asked Questions

Q: Will this gasket set fit both the upper and lower intake manifold on my 3.8L engine? A: Yes, most kits include gaskets for both the upper and lower intake manifolds. Check the kit contents listed in the images to confirm coverage for your specific intake design.

Q: Do I need to use RTV sealant when installing these intake manifold gaskets? A: This composite gasket set typically does not require additional sealant, but you should follow the vehicle manufacturer’s torque specs and apply a small dab of RTV at the corners where the gasket meets the end seals, as recommended in the service manual.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.