Sierra Marine Parts Catalog
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INTERNALENGINECOMPONENTS—
CylinderHeads,TimingCovers/Flywheels
18-4511
TIMING COVER
GM 4.3L-composite with sensor port
18-4512
TIMING COVER
GM 4.3L composite w/o sensor port
18-4513
TIMING COVER
GM 5.0L/5.7L-composite with sensor port
18-4514
TIMING COVER
GM 5.0L/5.7L-composite w/o sensor port
18-4516
RING GEAR-FLYWHEEL
14" GM fywheel w/ 168 teeth
18-4517
RING GEAR-FLYWHEEL
12" GM fywheel w/ 153 teeth
18-4518
FLYWHEEL
14" 4.3L V-6, 1 piece main 1987 and up
18-4519
FLYWHEEL
14" 5.0/5.7L, 1 piece main 1987 and UP
18-4523
FLYWHEEL
14" 454, Gen V & VI w/ 1 piece rear main
18-4522
FLYWHEEL
14" 454, Gen IV w/ 2 piece rear main
18-4521
FLYWHEEL
14" small-block GM, 2 piece main, pre 1987
CYLINDER HEAD ASSEMBLY
Replaces: MerCruiser 938-827178 1
Replaces 4.3L Vortec V-6 (1996-Up) with screw in rocker
arm studs (non-adjustable valve train), 8 intake manifold
mounting bolts, center mount valve cover. NOTE: not for
use with engines using factory roller rocker arms.
CYLINDER HEAD ASSEMBLY
Replaces: MerCruiser 949-4057,
949-5798,
OMC 986086,988163,3854339, Volvo
3854339,3853894
Fits: (1980& Up) 5.0L Ford with D-shape 58 cc
combustion chamber
CYLINDER HEAD
Fits: 5.0L Vortec