Reman Mercruiser 5.7L 350 Vortec Marine Longblock Engine Engine Block The GM 12600821 Cylinder Head

The GM 12600821 Cylinder Head is engineered for optimum performance in GM Gen III and IV engines with multiple sources highlighting its compatibility with 6

It is an OEM part ensuring perfect compatibility and fit for GM vehicles including Chevrolet Silverado 1500 and GMC Sierra 1500 from 2014 to 2023

The GM 12636253 Connecting Rod is an OEM part designed for 2011-2016 GM 6

Matching the part number to the manufacturers specifications is crucial for proper fit and function

Reman Mercruiser 5.7L 350 Vortec Marine Longblock Engine Engine Block The GM 12600821 Cylinder HeadThis Reman Mercruiser 5. 7L 350 Vortec Marine Longblock Engine (Part No. 2143MSRI 4) delivers robust 330HP performance for inboard and sterndrive applications, expertly rebuilt to OEM specifications for superior reliability and corrosion resistance. Featuring precision machined cylinder heads, a forged steel crankshaft, hardened cam bearings, high capacity oil pump, and fresh gaskets throughout, this marine longblock engine restores peak power and