Parts for MerCruiser Race Engine and Drive 420 GM 454 V-8 1987-1989 Cylinder Head & Rocker Cover

Revise Search: All Models > 420 GM 454 V-8 1987-1989 > 0A398941 - 0B622418 (USA) > Cylinder Head & Rocker Cover

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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 ]

#	27-808730A92	GASKET SET (1 required per assembly) SN# 0D725500 THRU 0D937011
		27-808730A92 - Engine Overhaul Gasket Set [ More info ] Unavailable
		27-808730A98 - Gasket Set [ More info ] Unavailable
#	27-13218A 1	GASKET SET (1 required per assembly) SN# 0A398941 THRU 0D725499
		27-13218A 1 - Gasket Set [ More info ] Unavailable
#1	821948A 1	COVER ASSEMBLY, Rocker (2 required per assembly) SN# 0A398941 THRU 0D725769
		821948A 1 - Valve Cover [ More info ] Unavailable
		821948T 1 - Valve Cover, NLA [ More info ] Unavailable
#1	821948A 3	COVER ASSSEMBLY, Rocker (2 required per assembly) SN# 0D725770 THRU 0D937011
		821948A 3 - Cover Asssembly [ More info ] Unavailable
		821948A 4 - Valve Cover [ More info ] Unavailable
		821948T 4 - Valve Cover, NLA [ More info ] $132.00 2 In Stock.
#2	25-49767	GROMMET, Rocker Cover (2 required per assembly)
		25-49767 - Grommet, NLA [ More info ] Unavailable
#3	24-70086	SPRING, Filler Cap (2 required per assembly) SN# 0A398941 THRU 0D725769
		24-70086 - Spring, NLA [ More info ] $11.11 10+ In Stock.
#4	42336	CAP, Oil Filler (2 required per assembly) SN# 0A398941 THRU 0D725769
		42336 - Cap [ More info ] Unavailable
		49288 - Cap [ More info ] $14.99 6 In Stock.
		17345 - Oil Filler Cap [ More info ] $17.99 2 In Stock.
#4	36-811569	CAP, Oil Tank, Oil Filler (2 required per assembly) SN# 0D725770 THRU 0D937011
		36-811569 - Oil Fill Cap [ More info ] $33.25 $28.26 2 In Stock.
#5	41598	BREATHER, Rocker Cover (2 required per assembly) 420 Models
		41598 - Breather - Black [ More info ] $14.93 4 In Stock.
		41598T - BREATHER-BLACK,NLA [ More info ] Unavailable
		14902 - Ord 41598T, NLA [ More info ] $28.00 4 In Stock.
#5	14902	BREATHER, Rocker Cover (2 required per assembly) 425 Models
#6	37-818991	DECAL, 420 Models (2 required per assembly)
		37-818991 - Decal [ More info ] $16.00 1 In Stock.
#7	16-56766	STUD, (.250-20/.250-28 x 1.380) (14 required per assembly)
		16-56766 - Stud - Priced Individually [ More info ] $3.60 4 In Stock.
#8	12-39143	WASHER, (.253 x .625 x .0937) (14 required per assembly)
		12-39143 - Washer, (.253 X .625 X .0937) [ More info ] $9.00 Available to Order: Usually ships within 10 days.
#9	11-20361	NUT, (.250-28) (14 required per assembly)
		118267089 [ More info ] $1.00 10+ In Stock.
		11-826708 9 - Nut - Priced Individually [ More info ] $1.40 10+ In Stock.
		18-3722-9 - Lock Nut, 121731, 11-35888, Pack of 5 [ More info ] $11.99 $6.88 Available to Order: Usually ships within 10 days.
#10	27-14765	GASKET, Rocker Cover (2 required per assembly)
		27-14765 - Rocker Cover Gasket [ More info ] $170.17 $40.85 10+ In Stock.
#11	848263	PUSH ROD, Vavle (8 required per assembly) Intake
		848263 - Push Rod [ More info ] $19.99 10 In Stock.
#11	848266	PUSH ROD, Valve (8 required per assembly) Exhaust
		848266 - Push Rod [ More info ] $22.21 6 In Stock.
#12	13024	VALVE, Exhaust - Standard (8 required per assembly)
		13024 - Exhaust Valve [ More info ] Unavailable
		843080 - Exhaust Valve [ More info ] $158.97 Available to Order: Usually ships within 10 days.
#13	16-95820	STUD, Rocker Arm Valve (16 required per assembly) SN# 0A398941 THRU 0D725499
		16-95820 - Stud [ More info ] $16.20 $13.77 10+ In Stock.
#13	16-821836	STUD, Rocker Arm Valve (16 required per assembly) SN# 0D725500 THRU 0D937011
		16-821836 - Stud [ More info ] $32.92 Available to Order: Usually ships within 10 days.
#14	49132	GUIDE, Push Rod (8 required per assembly) SN# 0A398941 THRU 0D725499
		49132 - Guide [ More info ] $5.03 $4.98 10+ In Stock.
#14	811586	GUIDE, Push Rod (8 required per assembly) SN# 0D725500 THRU 0D937011
		811586 - Guide [ More info ] Unavailable
		845707 - Guide [ More info ] Unavailable
		881686 - Guide [ More info ] $17.70 Available to Order: Usually ships within 10 days.
#15	24-13455	SPRING, Valve (16 required per assembly)
		24-13455 - Spring, Valve [ More info ] Unavailable
		24-13455T - Vavle Spring Assembly [ More info ] Unavailable
#16	98598	RETAINER, Valve Spring (16 required per assembly)
		98598 - Retainer [ More info ] Unavailable
		843376 - Retainer [ More info ] $16.24 Available to Order: Usually ships within 10 days.
#17	15832	SEAL, Valve Stem (16 required per assembly)
		15832 - SEAL [ More info ] Unavailable
		26-827645 - Seal [ More info ] Unavailable
#18	15-54531	SHIM, Valve Spring (.015) (16 required per assembly)
		15-54531 - Shim-.015 Note: Priced Individually [ More info ] Unavailable
		15-845669 - Shim -.015 - Priced Individually [ More info ] $8.50 Available to Order: Usually ships within 10 days.
#18	15-77624	SHIM, Valve Spring (.030) (8 required per assembly)
		15-77624 - Shim -.030 [ More info ] $4.20 Available to Order: Usually ships within 10 days.
#19	96028	LOCK, Valve Stem (32 Keys) (1 required per assembly)
		96028 - Lock - Valve - Priced Individually [ More info ] Unavailable
#20	69304	ARM, Valve Rocker (16 required per assembly)
		69304 - ROCKER ARM [ More info ] Unavailable
		69304T - ROCKER ARM,NLA [ More info ] Unavailable
#21	11-44481	NUT (16 required per assembly)
		11-44481 - Nut, Valve Rocker Arm [ More info ] $2.00 1 In Stock.
		11-848610 - Nut, Rocker Arm Valve [ More info ] Unavailable
		118M0043537 - NUT-ROCKER [ More info ] $11.50 Available to Order: Usually ships within 10 days.
#22	938-816778	CYLINDER HEAD ASSEMBLY (2 required per assembly) SN# 0A398941 THRU 0D725499
		938-816778 - Cylinder Head [ More info ] Unavailable
		938-816778A 3 - HEAD ASY-CYLINDER [ More info ] Unavailable
		938-816778T 3 - Cylinder Head Assembly [ More info ] Unavailable
#22	938-811529A 4	CYLINDER HEAD KIT (2 required per assembly) (.375) 425 Models
		938-811529A 4 - HEAD KIT-CYLINDER [ More info ] Unavailable
		938-811529 1 - Cylinder Head [ More info ] Unavailable
		938-811529T 1 - Cylinder Head,NLA [ More info ] Unavailable
#22	938-826363 2	CYLINDER HEAD KIT (2 required per assembly) (.437) 425 Models
		938-826363 2 - Cylinder Head [ More info ] Unavailable
		938-826363 1 - Cylinder Head [ More info ] Unavailable
		938-826363T 1 - Cylinder Head,NLA [ More info ] Unavailable
#23	821024	VALVE, Inlet - Standard (2.250) (8 required per assembly)
		821024 - VALVE-INLET [ More info ] Unavailable
		821024T - Inlet Valve [ More info ] $109.83 Available to Order: Usually ships within 10 days.
#24	27-13687	GASKET, Cylinder Head (2 required per assembly) SN# 0A398941 THRU 0D725499
		27-13687 - Head Gasket [ More info ] $28.00 6 In Stock.
		27-8M0049045 - Head Gasket [ More info ] $80.98 1 In Stock.
		18-3877 - Head Gasket 454 Early Style [ More info ] $69.99 $60.86 In Stock
#24	27-811546	GASKET, Cylinder Head (2 required per assembly) SN# 0D725500 THRU 0D937011
		27-811546 - Cylinder Head Gasket [ More info ] $49.99 10+ In Stock.
		27-879150139 - Cylinder Head Gasket [ More info ] $116.00 In Stock
		18-3874 - Head Gasket 502 [ More info ] $100.07 $90.90 In Stock
#25	10-49106 1	BOLT (2.00 Inch) Cylinder Head (8 required per assembly)
		10-49106 1 - SCREW [ More info ] Unavailable
		10-845706M 2 - SCREW [ More info ] Unavailable
#26	10-49105	BOLT, (4.125 Inch), Cylinder Head (24 required per assembly)
		10-49105 - Screw [ More info ] Unavailable
		10-845705 - Screw [ More info ] Unavailable