Dorman 674-579 Exhaust Manifold - Front

OE-Style Exhaust Manifold Replacement

Dorman 674-579 is a cast iron exhaust manifold built to match the fit and function of the original part on specified vehicles. It is made for front-position applications on Nissan Maxima and INFINITI I30 models, with included gaskets and downpipe hardware for a complete repair.

For drivers searching for a front exhaust manifold for 1995-2000 Nissan Maxima or 1996-2000 INFINITI I30, this replacement is engineered for direct service on vehicles without California emissions.

Key Features

• Cast iron construction for durability in high-heat exhaust service
• Natural finish with oval port shape
• Includes heat shield
• Includes gasket or seal for the repair
• Mounting hardware included for installation
• Package contents: exhaust manifold, manifold gasket, studs, and nuts

Detailed Description

This Dorman exhaust manifold, part number 674-579, is precision-engineered to replicate the original manifold’s fit and function on the listed applications. The cast iron design supports long-term exhaust sealing and heat resistance, while the included gasket, studs, nuts, and heat shield help complete the repair with the needed service components. It is a practical OE-style replacement for front exhaust manifold service on Nissan Maxima and INFINITI I30 vehicles.

This part cross-references 101298 and 1400631U00 for the same application.

What It Helps Fix

• Exhaust leaks at the manifold-to-cylinder-head sealing surface
• Cracked or warped original manifold housings
• Broken or corroded manifold mounting hardware
• Noise from a leaking front exhaust manifold
• Failed sealing components during manifold replacement

Installation Notes and Tips

Fits 1999-2000 Nissan Maxima, front, wo/California Emissions. Fits 1995-1998 Nissan Maxima, front. Fits 1999 INFINITI I30, front, wo/California Emissions. Fits 1996-1998 INFINITI I30, front.

Confirm engine configuration and emissions equipment before installation. Inspect the cylinder-head mating surface, exhaust fasteners, and downpipe connection points for corrosion or damage before assembly. Replace any worn sealing surfaces as needed to help achieve a proper exhaust seal.

Quality Assurance

Dorman manufactures this manifold as a direct-fit replacement for the specified applications, with materials and included service components selected to support a complete exhaust repair.