MerCruiser V8 I/O Exhaust Elbow Riser Replaces B-76668A3 

Direct replacement exhaust elbow riser.

Replaces MerCruiser 76668A3.

Fits these applications:

• MerCruiser V8 225, 250, 255, 270 and 280, inboard and stern drive units (log style direct replacement).
• MerCruiser V8 325, 330, 350, 370 and 400, inboard and stern drive units (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-76668A3, B-72964A1 and B-47877A4 (I/O applications).
• Includes plugs, gasket and mounting hardware to mount to the manifold.
• 3 year limited warranty on Barr exhaust manifolds, risers and exhaust connectors (1 year when used for commercial purposes).

Compatible parts:

• MC-1-47735 direct replacement water cooled exhaust manifold (port side).
• MC-1-47736 direct replacement water cooled exhaust manifold (starboard side).
• MC-1-47737 direct replacement water cooled exhaust manifold (port side).
• MC-1-47738 direct replacement water cooled exhaust manifold (starboard side).
• MC-20-72963 direct replacement exhaust elbow riser.
• MC-20-61811A4 manifold to riser 3" spacers (sold in pairs). Includes all mounting hardware, gaskets and drain plugs.
• 1-60252 direct replacement exhaust manifold end cap/connector.
• 1-60252P front end plate mounting package.
• MC-1-77234P manifold mounting package.
• MC-20-72963P exhaust riser elbow mounting package.
• MC-20-76668P exhaust riser elbow mounting package.
• MC-27-47487 alternator bracket.
• MC-29-47441 upper thermostat housing.
• MC-29-78984 lower thermostat housing.
• MC-29-78985 lower thermostat housing.
• MC47-27-33395 direct replacement exhaust manifold to head gasket.
• MC47-27-33395A2 exhaust manifold gasket set.
• MC47-27-46820 direct replacement exhaust manifold to head gasket.
• MC47-27-48042 direct replacement exhaust elbow to manifold gasket.
• MC47-27-48043 direct replacement exhaust manifold end cap/connector gasket (will fit both ends).
• MC47-488 KIT thermostat kit (includes gasket and thermostat).

Manufactured by Barr Marine. Part number MC-20-76668.