Sierra 18-1971 MerCruiser Marine Boat Exhaust Riser Elbow 76351 60426 49964


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Product Details

New Sierra 18-1971 exhaust riser elbow. Fits many MerCruiser 1972 to 1982 140hp 4-cylinder engines, 1970 to 1981 165hp inline 6-cylinder engines, and 1975 to 1982 GM and Ford V-8 engines with log style (end rise) manifolds. This riser will also fit many 1976 to 1979 MerCruiser 470 applications. Has 3″ outlet (measured on O.D. of outlet) and a 90 degrees down-angle. Does not come with gasket or mounting kit. This riser will fit either side of the engine in V8 applications. Each purchase is for one riser.

Riser mating bolt dimensions are 3-1/16″ (77.8mm) by 2-13/16″ (71.4mm) bolt center-to-center.

This part is new and high-quality cast iron construction. To determine if this is the correct replacement for you, look on your current part for casting numbers and match them to the cross reference below:

Cross ReferencePart Number
MerCruiser76351, 60426, 49964
Osco Motors6351
Barr MarineMC-20-76351
Sierra Marine18-1971
Aqua Power5701
GLM Products51120

About Sierra
Sierra provides premium-quality aftermarket replacements for over 6,000 marine parts, tools, and components. Sierra products are engineered to meet or exceed OEM standards, and stand up in harsh marine environments. Every new Sierra part comes with a limited lifetime warranty that covers the useful life of the product against any defects in workmanship and materials.

Additional information

Product Specifications
WarrantyLimited Lifetime
Manufacturer Part Number18-1971
Item Weight20.4 lbs
Part Number18-1971
Country of ManufactureChina
Shipping Weight25 lbs
Shipping Dimensions15" x 13" x 9"
Replaces76351, 60426, 49964
FitsMerCruiser 140, 165, and End-Rise V8
MaterialCast Iron
TypeExhaust Riser/Elbow