Description
Product Overview
The Strongthium 3in 2‑Bolt Exhaust Flange Gasket is a precision‑engineered component for automotive exhaust systems. Constructed from a five‑layer galvanized steel sheet with an integrated graphite core, the gasket delivers exceptional heat resistance and durability. With a total thickness of 2.3mm (0.09″), it fits 3″ (77mm) flange ID exhaust pipes and features bolt‑to‑bolt measurements of 108mm center‑to‑center, ensuring a secure fit for bolts up to 11mm (7/16″) in diameter. The machined exterior provides a flat, even sealing surface for optimal performance.

Usage
This gasket is ideal for high‑temperature silencer and exhaust applications in passenger cars, light trucks, and performance vehicles. It excels in environments where heat buildup and vibration are common, such as aftermarket exhaust upgrades, replacement of worn gaskets, and custom exhaust builds. Installers and DIY enthusiasts will appreciate the straightforward bolt‑on design, which reduces installation time while maintaining a leak‑free seal.
Why Choose Us
Strongthium combines rigorous manufacturing standards with premium materials to deliver a gasket that outperforms standard OEM parts. The five‑layer galvanized construction resists corrosion, while the graphite core absorbs heat and expands uniformly, preventing gaps. Each gasket undergoes dimensional inspection to guarantee exact fitment, and the brand’s reputation for automotive reliability gives you confidence in long‑term durability.
Key Features
- Five‑layer galvanized steel with graphite core for superior heat resistance
- Machined exterior provides a flat sealing surface
- Fits 3″ (77mm) flange ID exhaust pipes with 108mm bolt spacing
- Supports bolts up to 11mm (7/16″) in diameter
- Lightweight design at only 0.32 ounces for easy handling
FAQ
What exhaust pipe sizes are compatible?
The gasket is designed for 3″ (77mm) flange ID exhaust pipes, which is a common size for many performance and replacement exhaust systems.
Can this gasket be used on both stock and aftermarket silencers?
Yes, its robust construction and heat‑resistant materials make it suitable for both stock silencers and high‑performance aftermarket applications.
How does the graphite layer improve performance?
The graphite core expands evenly under heat, maintaining a consistent seal and reducing the risk of leaks caused by thermal cycling.
Is special tooling required for installation?
No special tools are needed; standard exhaust bolts and a torque wrench are sufficient for a secure installation.
What is the warranty on this gasket?
Strongthium offers a limited one‑year warranty covering material defects and manufacturing errors.





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