BARR, MC-20-55538 for 4-CYLinder 120-hp and some older 150 and 155-hp, 6-cylinder in-line Mercruiser engines. Replaces Mercruiser part 39920A1 and 55538A2. Also replaces AquaPower 5702, Sierra 18-1973.
Includes raw water gasket and mounting hardware. This is the smaller square gasket pattern riser (2-1/2" x 3" bolt centers), fits manifold MC-1-63122. 3-year limited warranty, made in USA. Riser is drilled and tapped for throttle cable attachment.
THE PIPE PLUGS IN THIS RISER HAVE BEEN INSERTED WITH A PERMANENT SEALER.IF YOUR APPLICATION REQUIRES A HOSE BARB INSERTED INTO THE RISER, PLEASE SELECT AN ALTERNATIVE PRODUCT.