Dorman Exhaust Manifold Kit passenger side — Ductile Iron direct-fit with gaskets & hardware

The Dorman 674-732 passenger side exhaust manifold kit is a direct-fit OE FIX replacement made from high-grade ductile iron and includes all required gaskets and hardware for straightforward installation.

Many factory exhaust manifolds are cast from lower-grade iron that can warp, crack, or leak under repeated heat cycles. Dorman reengineers these components with improved materials and supplies a complete kit—manifold, manifold gasket, two flange gaskets, three studs, and three nuts—so you get a durable replacement without hunting down parts. This kit is reverse engineered to match original mounting points and exhaust flow characteristics for compatible models.

How does this Dorman manifold resist warping and cracking?

Instead of the brittle cast iron used in some OE parts, this manifold uses ductile iron that offers better tensile strength and heat resistance. That reduces the chance of distortion after thermal cycling and improves longevity in high-temperature exhaust environments.

• Ductile iron construction reduces fracture risk and deformation
• Engineered to withstand repeated heating and cooling
• Manufactured and tested in the United States for consistent quality

What comes in the kit and why is it useful?

This is a complete replacement package so you don’t need to source separate gaskets or fasteners. Including the manifold gasket, two flange gaskets, three studs, and three nuts gives you the correct sealing surfaces and hardware for a reliable installation.

• New manifold gasket ensures proper sealing at the head interface
• Two flange gaskets prevent leaks where the manifold meets the exhaust pipe
• Included studs and nuts replace corroded or damaged mounting hardware

Will this part fit my vehicle and how do I confirm fitment?

Dorman OE FIX parts are reverse engineered to match original equipment geometry, but fitment can vary by year, engine, and trim. Use the vehicle garage tool on the product page to enter your make, model, and trim to confirm compatibility before purchase.

• Direct-fit design mirrors original mounting points and ports
• Check the online garage tool with your vehicle details for exact match
• If unsure, compare OEM part numbers or consult a technician

How does installing this kit affect installation time and reliability?

Because the kit contains the correct gaskets and hardware, installation is typically faster and more reliable than sourcing parts separately. Proper sealing and fresh fasteners reduce the risk of exhaust leaks and rework, so the repair is done right the first time.

• Complete hardware set reduces downtime and parts shopping
• Fresh gaskets and studs help achieve correct torque and sealing
• Reverse-engineered fit lowers alignment and clearance challenges

Who is this for: This Dorman 674-732 passenger side exhaust manifold kit is intended for owners or mechanics replacing a warped, cracked, or leaking manifold on compatible vehicles. It’s ideal for drivers who want a stronger-than-stock replacement, DIY enthusiasts seeking a straightforward direct-fit swap, and repair shops that prefer a single SKU solution that includes the necessary gaskets and mounting hardware.