MerCruiser - 6 Cylinder

Direct replacement water cooled manifold to fit the 6 cyl. GM (Model 165) engine.

Replaces MerCruiser 58759A14, Osco 8759, Mallory 9-40500, HGE 8759 and Sierra 18-1960-1.

Fits MerCruiser straight 6 cylinder Model 165 (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.

• Replaces MerCruiser part # B-58759A1.
• Includes all plugs, gaskets and mounting hardware to the cylinder head.
• 3 year limited warranty on Barr exhaust manifolds, risers and exhaust connectors (1 year when used for commercial purposes).

Compatible parts:

• MC-20-60426 direct replacement exhaust elbow riser (utilizes a stainless steel sleeve at the water/air mixing area).
• MC-20-76351 direct replacement exhaust elbow riser.
• MC-20-61851A3 manifold to riser 3" spacer (single block). Includes all mounting hardware, gaskets and drain plug.
• 1-54870 direct replacement exhaust manifold rear end cap. Serial # 4481625 and below.
• 1-54870P rear end cap mounting package.
• 1-60252 direct replacement exhaust manifold end cap/connector.
• 1-60252P front end plate mounting package.
• MC-1-58759P exhaust manifold mounting package.
• MC-1-58764P manifold to carburetor adaptor mounting package.
• MC-20-55730 stainless steel fresh water cooling block off plate for use with MerCruiser riser #'s 60426, 76351 and 76771. Requires (2) gaskets part # MC47-27-52076.
• MC-20-60207 stainless steel block off plate (with vent hole) for use with MerCruiser riser #'s 60426, 76351 and 76771. Requires (2) gaskets part # MC47-2752076.
• MC-20-60426P exhaust riser elbow mounting package. For use with both MC-2060426 and MC-20-76351 risers.
• MC-29-47587 direct replacement lower thermostat housing.
• MC-29-60372 direct replacement upper thermostat housing.
• MC47-27-46401 direct replacement manifold to head gasket.
• 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.
• MC47-27-99777-3 direct replacement exhaust elbow to manifold gasket.

Manufactured by Barr Marine. Part number MC-1-58759.

Direct replacement water cooled exhaust manifold.

Replaces MerCruiser 99746A17, Osco 9745, Mallory 9-40505, HGE 9746, Sierra 18-1952-1 and GLM 51220.

Fits MerCruiser V6 229 and 262 C.I.D., Models 185R, 185MR, 205R and 205MR (center riser 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.

• Replaces MerCruiser part # 99746A3 or part # 99746A8.
• When converting a 1-piece manifold/riser to a 2-piece system, use manifold MC-1-99746 and exhaust elbow MC-20-44354 with MC-20-14478, MC-20-32-14358 and MC-20-32-44348.
• Includes all plugs, gaskets and mounting hardware to the cylinder head.
• 3 year limited warranty on Barr exhaust manifolds, risers and exhaust connectors (1 year when used for commercial purposes).

Compatible parts:

• MC-20-44354 direct replacement water cooled center discharge riser. Accepts 4" I.D. exhaust hose (8 degree angle).
• MC-20-98504 direct replacement water cooled center discharge riser. Accepts 3" I.D. exhaust hose (15 degree angle).
• MC-20-93320A3 manifold to riser 3" spacer blocks (pair) with fastener and gasket package.
• MC-20-93322A3 manifold to riser 6" spacer blocks (pair) with fastener and gasket package.
• MC-20-44354P mounting package for MC-20-44354 riser.
• MC-20-87918 direct replacement stainless steel block off plate for use with MerCruiser riser #'s 98502, 98504 and 44354. Requires (2) gaskets part # MC47-27-41813.
• MC-20-98504P mounting package for MC-20-98504 riser (includes gaskets, drain plug, pipe plug, stainless steel restrictor plate and fasteners).
• MC-20-99208 direct replacement stainless steel restrictor plate for use with MerCruiser riser #'s 98502, 98504 and 44354. Requires (2) gaskets part # MC47-27-41813.
• MC-27-93175 alternator bracket.
• MC-50-806926 replacement 3/4" N.P.T. X 1" hose fitting (90 degree)/brass drain cock.
• MC-50-87238 exhaust manifold drain cock.
• MC47-27-41811 direct replacement restrictor gasket. To be used with MC-20-87918 ((2) required per plate used).
• MC47-27-41813 direct replacement restrictor gasket.
• MC47-27-87105 direct replacement exhaust elbow gasket.
• MC47-27-99757 direct replacement manifold to head gasket.

Manufactured by Barr Marine. Part number MC-1-99746.

Direct replacement exhaust manifold.

Fits MerCruiser V6 4.3L "dry joint" exhaust, all carbureted, MPI, inboard, Alpha and Bravo stern drive models (center riser 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.

• Replaces MerCruiser part # 864612T01
• Includes all applicable plugs, mounting hardware and manifold to cylinder head gasket.
• Always use the correct riser gasket for your application and refer to the correct guide to install gaskets correctly. Improperly installed gaskets, leaks or damage caused by either are not covered by the Barr Marine warranty. Gaskets are not subject to exchange or refund under any circumstances.
• 3 year limited warranty on Barr exhaust manifolds, risers and exhaust connectors (1 year when used for commercial purposes).

Compatible parts:

• MC-20-864309 direct replacement exhaust riser/elbow. Riser will replace the equivalent part number on 4.3L Models as well.
• MC-20-864591 direct t replacement exhaust riser/ elbow.
• MC-1-864612P exhaust manifold mounting package. Riser gasket sold seperately.
• MC47-27-864547 direct replacement restrictor gasket.
• MC47-27-864549 direct replacement restrictor gasket. Direct replacement restrictor gasket.
• MC47-27-864850 direct replacement restrictor gasket.

Manufactured by Barr Marine. Part number MC-1-864612.