Sierra 18-1958-1 port-side manifold for MerCruiser Ford V8 gas engines small block 5.0L and 5.8L. Replaces Mercury Marine part numbers 65604A4 and 65604A12.
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.
