Dorman
Dorman Exhaust Manifolds - 674385
Dorman Exhaust Manifolds - 674385
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- Ships direct from the brand or supplier
- Tracking emailed when it ships
- Free fitment check before you order
Upgrade your vehicle’s exhaust system with the Dorman Exhaust Manifold, designed specifically for select Chevrolet and GMC models from 1987 to 1994. This durable cast iron manifold ensures reliable performance and longevity, making it a smart choice for your engine.
- Constructed from robust cast iron for enhanced durability and resistance to cracking.
- Includes necessary mounting hardware, with 2 bolts and 2 nuts for the collector flange, ensuring a hassle-free installation.
- Comes complete with exhaust manifold gaskets, providing a tight seal and preventing leaks.
- Natural finish complements the engine bay while promoting optimal exhaust flow.
This exhaust manifold is sold individually and is designed for a perfect fit in 1990-1994 Chevrolet and GMC models. Trust Dorman for quality and reliability in your exhaust system.

Before you order: fitment and what to plan
The exhaust manifold or header collects exhaust from each cylinder and sends it into the exhaust system.
Fitment notes
- Specs, lead time and warranty come from Dorman and can change. The details above this guide are the latest we have.
Not sure it fits? Message us your vehicle details and we'll double-check fitment before you buy.
Ask about fitmentPlan the whole job
- Exhaust manifold gaskets. Always new.
- Studs and nuts. Old studs often break on removal.
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