Dorman Exhaust Manifold Kit Passenger Side — Ductile Iron with Gaskets & Hardware

The Dorman 674-732 Passenger Side Exhaust Manifold Kit is a direct-fit OE FIX replacement made from ductile iron and comes with all gaskets and hardware needed for installation.

Many factory exhaust manifolds are cast from lower-grade iron that can warp or crack under repeated heat cycles. This Dorman OE FIX solution replaces the original with a more resilient ductile iron manifold, plus the necessary flange gaskets, studs and nuts so you can restore a sealed exhaust path without hunting down additional parts. The component is reverse-engineered to match the original dimensions for a straightforward swap and is engineered and tested in the United States.

How does this manifold resist warping and cracking?

Unlike some OE castings, this replacement uses ductile iron which has greater tensile strength and improved thermal fatigue resistance. That material choice reduces the likelihood of deformation when exposed to high exhaust temperatures and vibration.

• Ductile iron construction for higher durability
• Designed to tolerate repeated heating and cooling cycles
• Manufacturing processes aimed at reducing stress concentrations

What comes in the kit and why is that important?

The kit is packaged as a complete repair solution to eliminate multiple trips to the parts store. It contains the manifold plus the gaskets and fasteners required to create a proper seal and secure the part to the cylinder head and exhaust pipe.

• New manifold and multi-piece gasket set to prevent leaks
• Two flange gaskets included for the pipe connection
• Three studs and three nuts supplied to replace corroded hardware

Is this a direct replacement and how easy is installation?

This Dorman OE FIX unit is reverse-engineered from the original equipment for a direct-fit installation in compatible applications. It is intended to match mounting points and port geometry so you can install with standard hand tools; however, surface preparation and correct torque on fasteners are required for a reliable seal.

• Reverse-engineered to replicate OE fit and orientation
• Includes all necessary new gaskets and mounting hardware
• Fits specific makes/models—verify with the vehicle lookup tool

How can I confirm this part fits my vehicle?

Because exhaust manifolds vary by engine option and trim, confirming fitment prevents unnecessary returns. Use the online garage or parts lookup and enter your vehicle’s year, make, model and engine to ensure compatibility before ordering.

• Check compatibility with Dorman’s fitment tool or retailer lookup
• Match part number 674-732 to your vehicle applications
• Contact seller with VIN for exact confirmation if unsure

Who this is for: This kit is intended for technicians and DIY mechanics replacing a warped or cracked passenger-side exhaust manifold on compatible vehicles. It’s suited to anyone who wants a direct-fit alternative to a deteriorated OE manifold, including garages that need a ready-to-install solution with replacement gaskets and hardware included.