Sierra MerCruiser 3" Exhaust Riser Elbow MC-20-55538 98504A3 18-1970-1 18-1970-2

Sierra replacement 3" Exhaust elbow for MerCruiser

MerCruiser 175-205 GM 229/262 CID V6 (1983+)

MerCruiser 200-320 GM 305/350/377 CID V8 Small Block (1983+)

MerCruiser 330-370 GM 454/502 CID V8 Big Block (1981+)

Comparable Part Numbers:
 • MerCruiser: 98504A3
 • Osco: 8503A
 • GLM: 51110
 • Barr Marine: MC-20-55538
 • Sierra: 18-1970-1