Barr Mercruiser 4 Cylinder Exhaust Manifold - MC-1-99798

Quality built replacements for your rusty or cracked Mercruiser exhaust marine manifold on your 153 and 181 CID Chevrolet engine with a direct replacement Mercruiser 120 & 140 HP Exhaust Manifold. Barr exhaust manifolds are built for the marine environment and are easy to install. It is recommended that replacement manifolds be done in pairs and to also replace the risers and elbows at the same time.

Specifications:

• Carburetor has a single idle air adjustment screw with a bolt pattern of 3 11/16" x 2"
• Riser mounting flange with square bolt pattern (2 13/16" x 3 1/16" bolt centers)
• 6-bolt mounting pattern to head

Compatible Models:

• Mercruiser 2.5 L & 3.0L, 153 & 181 cu. in., 120 &140 HP engines

Replaces:

• Barr: MC1-99798
• Mercruiser: 860235A04, 99798A16, 99798A9, 99798A3
• Osco: 9798