Dorman 674-556 Exhaust Manifold

Dorman Exhaust Manifold 674-556

Dorman 674-556 is an OE FIX exhaust manifold for select Toyota Corolla, Geo Prizm, and Toyota Celica applications with California emissions. It replaces original manifolds that can warp or crack from lower-grade iron construction, using high-grade ductile iron for improved heat and stress resistance.

Key Features

• Cast iron exhaust manifold construction with a natural finish
• Round port shape for the listed applications
• Includes gasket or seal, heat shield, and mounting hardware
• Package contents include the manifold, manifold gasket and flange, studs, and nuts
• Direct replacement for OE part numbers 101282, 94853663, and 1714116290

Detailed Description

This Dorman exhaust manifold, part number 674-556, is built for drivers needing a replacement for cracked or warped factory manifolds on California-emissions vehicles. It is engineered as an OE-style solution for 1993-1996 Toyota Corolla, 1993-1995 Geo Prizm, and 1994-1995 Toyota Celica applications, with a focus on durability under exhaust heat and engine stress. The cast iron design, integrated heat shield, and included sealing components support a complete repair on the listed vehicles.

This part cross-references OE numbers 101282 and 94853663 for the same application.

Common Issues This Part May Address

• Exhaust leaks from a cracked manifold
• Warped manifold flange causing sealing problems
• Noise from a failing exhaust manifold assembly
• Heat-related deterioration of the original manifold
• Check engine concerns tied to exhaust leakage at the manifold

Installation Notes and Tips

Verify California emissions fitment before ordering. Inspect the cylinder head sealing surface, exhaust flange, and fasteners for damage before installation. Replace worn gaskets and follow the vehicle service manual for torque sequence and tightening specifications to help ensure a proper seal on Toyota Corolla, Geo Prizm, and Toyota Celica applications.

Quality Assurance

Dorman positions this OE FIX manifold as a durability-focused replacement for original manifolds that are prone to heat-related warping and cracking. The high-grade ductile iron construction is intended to better handle exhaust heat and stress than lower-grade factory castings.