New Sierra 18-1970-2 marine exhaust riser elbow. Supersedes and replaces Sierra 18-1970 and 18-1970-1. Replaces Barr MC-20-98504, GLM 51110, Mallory 9-40557, Marine Power 0992-115, Mercury/MerCruiser 95755A2, 98503A2, 98504A3, and Osco 8503A. Has 3" outside diameter outlet (accepts 3 inch exhaust hose). Includes gasket. Riser mating bolt dimensions are 3-7/16" (87.3mm) by 3-1/16" (77.8mm) bolt center-to-center.

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.

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