A-Premium Intake Manifold Gasket Set 4.3L V6 (1996–2006) — Upper & Lower, Silicone/Nitrile

A-Premium lower and upper intake manifold gasket set for the 4.3L OHV V6 provides a complete, OEM-fit sealing solution for Chevy, GMC, Isuzu and Oldsmobile trucks and vans from 1996–2006.

This kit supplies the essential gaskets and seals needed when servicing the intake manifold on 4.3L V6 engines. It’s made from heat-resistant silicone and nitrile rubber and includes multiple gaskets and O-rings so you can replace worn seals in one job without sourcing parts separately. The set is built to match OEM dimensions and is intended as a direct replacement for common engine repair and maintenance tasks.

Which vehicles and model years does this gasket set fit?

This A-Premium set covers many GM platforms and select Isuzu and Oldsmobile models using the 4.3L OHV V6 between the mid-1990s and mid-2000s. Check the included reference numbers against your vehicle’s part lookup to confirm compatibility.

• Chevrolet: Astro (96–05), Blazer (96–05), C1500/Silverado (96–06 variants), Express 1500/2500 (96–06), S10 (96–04)
• GMC: C1500/Sierra 1500 (96–06 variants), Jimmy (96–05), Savana/ Safari/ P-series (96–06)
• Other: Isuzu Hombre (97–00), Oldsmobile Bravada (96–01), Workhorse FasTrack FT931 (02–03)
• Reference numbers: 12550026, MS95817 for cross-checking

What parts are included and what materials are used?

The kit bundles both upper and lower intake gaskets plus additional seals commonly replaced during manifold service. Materials were selected to resist heat, oil and fuel vapors while maintaining a tight, long-lasting seal.

• Included: 2 silicone intake manifold gaskets, 4 nitrile rubber O-rings, 1 silicone valve cover gasket
• Also includes: asbestos-free gasket, silicone throttle body gasket, silicone gasket, and a tube of gasket sealant
• Materials: silicone, nitrile rubber, asbestos-free composite—black finish; packaged in a box as a direct replacement

How does this gasket set improve engine performance and reliability?

Proper intake sealing prevents vacuum leaks that can cause rough idle, poor fuel economy, or drivability issues. Replacing aged or brittle gaskets restores factory sealing surfaces and reduces the chance of air or fluid intrusion at the manifold-to-head and throttle-body joints.

• High sealing performance to minimize air leaks and maintain proper manifold vacuum
• Heat- and corrosion-resistant materials extend service life under engine conditions
• OEM-style fit and included sealant streamline installation and reduce rework

What warranty and quality assurances come with the A-Premium set?

A-Premium backs this intake manifold gasket set with a one-year unlimited-mileage guarantee and asserts manufacture to OEM fitment standards. That coverage aims to give installers and DIYers confidence after installation.

• One-year unlimited-mileage guarantee from A-Premium
• Manufactured to meet OEM fit and function for straightforward replacement
• Packaged complete to reduce the need for additional parts purchases

Who is this for? This gasket set is designed for professional technicians, independent repair shops and experienced DIY mechanics working on GM 4.3L OHV V6 engines or compatible Isuzu/Oldsmobile variants. It’s particularly useful when performing intake manifold removal, gasket replacement, or throttle-body service and when you want a single kit that contains every common sealing component needed for a thorough repair.