MerCruiser 4 Cylinder 3.0L Vortec Exhaust Kit with Riser MC-20-12076 

Complete Barr Marine exhaust kit for the MerCruiser 4 Cylinder 3.0L Vortec. Everything listed below is included in this kit, so the complete exhaust setup can be ordered under one part number.

Kit includes:

• (1) MC-1-860235 MerCruiser 4 Cylinder 3.0L Vortec Exhaust Manifold. Direct replacement exhaust manifold. Includes all plugs, gaskets and mounting hardware to the cylinder head. Replaces MerCruiser 860235A04 and GLM 51214.
• (1) MC-20-12076 MerCruiser 4 Cylinder 2.5L, 3.0L Exhaust Riser. Direct replacement exhaust riser. Includes plugs, gasket and mounting hardware to mount to the manifold. Replaces MerCruiser 12076A2, Osco 2076, Mallory 9-40555, HGE 2076 and Sierra 18-1975.

Fits MerCruiser 4 cylinder 181 C.I.D. 140 H.P. 3.0L and 3.0LX, all models 1990 and up with Vortec style head (log style direct replacement).

Barr Marine castings have a thicker interior wall, are painted to match original manufacturer colors and are packed in foam for added protection during shipping and storage. Barr manifolds and exhaust connectors are designed to minimize back pressure, and in many cases more r.p.m.''s are achieved after replacing an OEM manifold with Barr replacement parts.

• 3 year limited warranty on Barr exhaust manifolds, risers and exhaust connectors (1 year when used for commercial purposes).

Compatible parts:

• 50-512-020 fitting, 3/4" N.P.T. X 1" hose.
• MC-20-12076P exhaust riser mounting kit.
• MC-50-10-806300 replacement 3/8" X 5 3/8" stud.
• MC-50-865549 lifting eye.
• MC47-27-807982 replacement carburetor to intake/ exhaust manifold gasket.
• MC47-27-815528 replacement cylinder head to exhaust manifold gasket.
• MC-1-95862 direct replacement water cooled manifold (Rochester (3 1/4" X 1 7/8") bolt pattern). 6 bolt mounting.
• MC-1-96705 direct replacement water cooled manifold (Rochester (3 1/4" X 1 7/8") bolt pattern). 6 bolt mounting.
• MC-1-99798 direct replacement water cooled manifold (MerCarb (3 11/16" X 2") bolt pattern). 6 bolt mounting.
• MC-20-76325 direct replacement exhaust riser.
• MC-20-61851A3 manifold to riser 3" spacer (single block). Includes all mounting hardware, gaskets and drain plug.
• 1-60252 direct replacement exhaust manifold end cap/connector.
• 1-60252P front end plate mounting package.
• MC-1-99798P exhaust manifold to cylinder head mounting package.
• MC-29-47587 direct replacement lower thermostat housing.
• MC-29-60372 direct replacement upper thermostat housing.
• MC47-27-48043 direct replacement exhaust manifold end cap/connector gasket (will fit both ends).
• MC47-27-73814 direct replacement exhaust manifold end cap gasket. Utilized with 1-73813 rear end cap.
• MC47-27-96429 direct replacement exhaust manifold to cylinder head gasket.
• MC47-27-99777-3 direct replacement exhaust elbow to manifold gasket.

Composite kit picture shown is for reference only. See list of included parts above in the description.