IAC Gasket

This is a New Old Stock gasket designed for the IAC Angle Boss / IAC Angle Adapter used on the Turbo Buick intake plenum. This gasket seals the adapter to the throttle body and prevents vacuum and unmetered air leaks—critical for stable idle and proper IAC function.

🔵 Blue Dot – New / Open Box / NOS
🔧 Compatibility:
• 1986–1987 Buick Grand National / Turbo T / GNX (3.8L Turbo)
• Fits IAC Angle Boss / IAC Angle Adapter plates
• Works with most stock and aftermarket throttle bodies using angle IAC setup

🧱 Material: Fiber gasket material
📍 Part Type: IAC Angle Boss / Adapter Gasket
📦 Includes: One NOS gasket as pictured

Condition Notes:
• New old stock – never installed
• No compression marks or seal damage
• Clean edges, no dry-rot or warping

Why You Want It:
Any leak at the IAC adapter can cause unstable idle, high idle, or tuning headaches that waste time. These gaskets are often missing or reused during upgrades—having a fresh NOS gasket ensures a proper seal and keeps the engine’s idle control system operating the way it should.

All items are sold as-is, with no returns or exchanges. Buyer is responsible for verifying compatibility with their exact engine build.