Parts for Mercury Marine 50 HP (4 Cylinder) Cylinder Block & Crankcase Assembly

Revise Search: All Models > 50 HP (4 Cylinder) > 5531630 & Up (USA) > Cylinder Block & Crankcase Assembly

NEED PARTS OR KITS?
View diagram and parts list below. Tap to zoom. Scroll down to order.
Each product listed is an OEM or aftermarket equivalent part. [ Example ]

Engine section

Reference numbers in this diagram can be found in a light blue row below — scroll down to order.
Each product listed is an OEM or aftermarket equivalent part. [ Example ]

#1	863-8358A 4	CYLINDER BLOCK/CRANKCASE ASSEMBLY (1 required per assembly)
		863-8358A 4 - Cylinder Block [ More info ] Unavailable
		863-8981A 6 - Cylinder Block,NLA [ More info ] Unavailable
#2	72038	BRACKET, STARTER MOTOR (UPPER) (1 required per assembly)
		72038 - Bracket, NLA [ More info ] Unavailable
#3	10-73279	SCREW, BRACKET TO CRANKCASE (1-7/8") (2 required per assembly)
		10-73279 - Screw, NLA [ More info ] $4.00 10+ In Stock.
#4	13-26993	LOCKWASHER, BRACKET SCREW (4 required per assembly)
		13-26993 - LockWasher - Priced Individually [ More info ] $0.99 10+ In Stock.
		138M0204647 - LOCKWASHER, Priced Individually [ More info ] $1.70 Available to Order: Usually ships within 10 days.
#5	76867	COVER, STARTER MOTOR (LOWER) (1 required per assembly)
		76867 - Cover [ More info ] $27.23 1 In Stock.
#7	46933A 7	CABLE ASSEMBLY, GROUND (2 required per assembly)
		46933A 7 - Strap Assembly, NLA [ More info ] $3.00 10+ In Stock.
#8	17-20032	DOWELL PIN, CYLINDER BLOCK TO MAIN BEARING (2 required per assembly)
		17-20032 - Pin -Dowel - Priced Individually [ More info ] $2.30 10+ In Stock.
#9	16-68164	STUD, CARBURETOR (1-1/4") (4 required per assembly)
		16-68164 - Stud, NLA [ More info ] Unavailable
		16-64936 - Stud, NLA [ More info ] $5.99 10+ In Stock.
#10	16-68165	STUD (2 required per assembly) CRANKCASE TO DRIVE SHAFT HOUSING (1-5/8")
		16-68165 - Stud, NLA [ More info ] $1.67 10+ In Stock.
#11	17-20033	DOWEL PIN, CRANKCASE TO CYLINDER BLOCK (2 required per assembly)
		17-20033 - Pin -Dowel - Priced Individually [ More info ] $1.27 10+ In Stock.
		17-43044 - Pin -Dowel-solid [ More info ] $2.40 1 In Stock.
#12	16-87901	STUD, CYLINDER BLOCK TO DRIVE SHAFT HOUSING (4") (2 required per assembly)
		16-87901 - Stud, NLA [ More info ] Unavailable
#13	16-68166	STUD, CYLINDER BLOCK TO DRIVE SHAFT HOUSING (2-1/8") (2 required per assembly)
		16-68166 - Stud [ More info ] $26.58 Available to Order: Usually ships within 10 days.
#14	16-68167	STUD, CYLINDER BLOCK TO DRIVE SHAFT HOUSING (2-1/2") (2 required per assembly)
		16-68167 - Stud [ More info ] Unavailable
#15	10-55511	SCREW, CRANKCASE TO CYLINDER BLOCK (1-1/2") (11 required per assembly)
		10-55511 - Screw, NLA [ More info ] $1.65 10+ In Stock.
#15	10-31984	SCREW, CRANKCASE TO CYLINDER BLOCK (1-3/8") (5 required per assembly)
		10-31984 - Screw - Priced Individually [ More info ] $1.70 Available to Order: Usually ships within 10 days.
#15	10-73275	SCREW, CRANKCASE TO CYLINDER BLOCK (2-7/8") (2 required per assembly)
		10-73275 - Screw - Priced Individually [ More info ] $1.80 $1.53 5 In Stock.
#16	12-70132	WASHER, CRANKCASE SCREW (18 required per assembly)
		12-70132 - Washer, (.323 X .563 X .063 - Stainless Steel) [ More info ] Unavailable
		12-8M0042642 - Washer - Priced Individually [ More info ] $1.70 10+ In Stock.
#17	10-20359	SCREW, CENTER MAIN BEARING LOCKING (1") (1 required per assembly)
		10-20359 - Screw - Priced Individually [ More info ] $1.70 $0.34 10+ In Stock.
#17	10-98260	SCREW, MAIN BEARING LOCKING (5/8") (2 required per assembly)
		10-98260 - Screw [ More info ] $1.10 Available to Order: Usually ships within 10 days.
#18	14-20091	TAB WASHER, CENTER BEARING LOCKING SCREW (3 required per assembly)
		14-20091 - Tab Washer - Priced Individually [ More info ] $1.70 10+ In Stock.
#19	32-99127109	TUBE, BALANCE - MAIN BEARING (5-1/2") (1 required per assembly)
		32-99127109 - TUBING-57 INCH [ More info ] Unavailable
		32-830756109 - Hose, 57 Inch [ More info ] Unavailable
		32-8M0047428 - Hose -57 Inch [ More info ] Unavailable
		32-8M0108355 - Hose, 57 Inch [ More info ] $50.33 In Stock
#20	22-99664	ELBOW, BALANCE TUBE TO CYLINDER BLOCK (2 required per assembly)
		22-99664 - Elbow [ More info ] Unavailable
		22-99664 1 - Elbow [ More info ] Unavailable
		22-99664 2 - Elbow [ More info ] $2.60 10+ In Stock.
#21	22-65857	CONNECTOR, BLEED HOSE (UPPER) (1 required per assembly)
		22-65857 - Fitting [ More info ] $5.50 10+ In Stock.
		22-56759 - Fitting [ More info ] $11.20 Available to Order: Usually ships within 10 days.
#22	32-99387 79	HOSE, CYLINDER BLEED (11") (1 required per assembly)
		32-99387 79 - Hose -27 Inch [ More info ] $11.90 Available to Order: Usually ships within 10 days.
#23	22-42867	CHECK VALVE, BLEED HOSE (LOWER) (1 required per assembly)
		21-42867 - Check Valve [ More info ] Unavailable
		21-42867 1 - Check Valve, NLA [ More info ] $25.85 10+ In Stock.
#24	99156	INDICATOR, TIMING - ELECTRIC (1 required per assembly)
		99156 - Indicator, NLA [ More info ] $6.11 10+ In Stock.
#25	10-39349	SCREW (1 required per assembly) INDICATOR TO CRANKCASE (3/4") - ELECTRIC
		10-39349 - Screw - Priced Individually [ More info ] $1.70 10+ In Stock.