MERCRUISER STBD MANIFOLD | OEM 1-47736 | MCM/MIE GM V8 427, 454 & 482 CID) -1981)MERCRUISER STBD. MANIFOLD OEM 1 47736 MCM MIE GM V8 427, 454 & 482 CID) 1981) This genuine MERCRUISER STBD. MANIFOLD is specifically designed for use in MCM MIE GM V8 427, 454 & 482 CID engines from 1981. You can trust in its quality and precision, as it is an OEM product with the part number 1 47736. With this manifold, you can ensure optimal performance and longevity for your engine, giving you the peace of mind you need for your marine adventures.