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  7.4L (454 ci) INBOARD Flywheel (1991 & Later Marine Engines)
7.4L (454 ci) INBOARD Flywheel (1991 & Later Marine Engines)


 
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Product Code: MMZ-130-KK

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Description
 
7.4L (454 ci) INBOARD Flywheel
(1991 & Later Marine Engines)



Safer Wholesale carries virtually every marine flywheel ever used in marine applications. There are only two flywheel sizes used in GM based marine engines: a 12" and a 14" flywheel (true inboard flywheels are always 14" with the ring gear on the outside edge of the flywheel). The crank bolt pattern of each engine (where the flywheel mates on the back crankshaft), is different for each engine. Simply said, a 14" flywheel from a 4.3L engine will not fit or bolt on a 5.7L engine, even though they are both 14" in diameter.

When ordering a flywheel, first measure your flywheel diameter (most are 14"), identify the YEAR of the engine, then identify your exact engine (3.0L, 4.3L, 5.7L, etc).

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7.4L (454 ci) INBOARD flywheel made for 1991 and later 7.4L (454 ci) marine engines.

If you have an existing 7.4L (454 ci) INBOARD marine engine made in 1990 or earlier and are replacing it with a 1991 and LATER 7.4L (454 ci) engine (commonly called a one-piece rear main seal or full seal), then this 7.4L INBOARD flywheel is required. (commonly referred to as a two-piece rear main seal or split seal) and are replacing it with a

This 7.4L INBOARD flywheel can easily be identified by the ring gear on the OUTSIDE edge of the flywheel - with sterndrive and I/O engine applications, the flywheel ring gear is on the INSIDE (see pictures). This INBOARD flywheel can also be easily identified by the starter which mounts near the TOP of the bell housing as opposed to the bottom of the bell housing.

Brand new 7.4L base marine engines do not ship a flywheel.

This flywheel is unique to a 7.4L inboard engine. It will only fit and install on a 7.4L inboard engines made from 1991 to present.

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