Mercruiser Timing Cover→GM V8 Big Block

Part # & Price	Description
QSTTC454G5 $99.95	Timing Cover for GM 7.4L 454 V8 Gen. V for Single Row Timing Chain Only Cast Aluminum Timing Cover for GM 454 Big Block V8 Gen. V. NOTE: Only works with single row timing chain, WILL NOT work with double row timing chain Gasket and Seal Not Included.
QSTTC454M $29.95	Cover Timing Marine Big Block 1990 and Earlier 454 Generation 4 66215 Big Block Timing Cover, Unpainted Steel. Gasket and Seal Not Included. Fits Generation 4 427 454 502 Marine engines. A Generation 4 can be identified by having a mechanical fuel pump mounted on the engine block itself. These rust out tight where the pan meets the timing cover. The engine some unpainted from GM so with the harmonic balancer in place its almost impossible to get a good amount of paint to prevent rust. REPLACES Mercruiser #:49153 54532 66215