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Parts for MerCruiser Race Engine and Drive 425 GM 454 V-8 1990-1992 Cylinder Head & Rocker Cover

#1 821948A 1 COVER ASSEMBLY, Rocker (2 required per assembly) SN# 0A398941 THRU 0D725769
COVER ASSEMBLY    O - Replaced by -821948T 1
 

This part has been superseded.

821948A 1 - COVER ASSEMBLY O [ More info ]
Unavailable
Replaced by -821948T 1
VALVE COVER       O NLA
 

About Mercury Marine

OEM Part

VALVE COVER O NLA [ More info ]
Unavailable
#1 821948A 3 COVER ASSSEMBLY, Rocker (2 required per assembly) SN# 0D725770 THRU 0D937011
COVER ASSSEMBLY   O - Replaced by -821948A 4
 

This part has been superseded.

821948A 3 - COVER ASSSEMBLY O [ More info ]
Unavailable
Replaced by -821948A 4
COVER ASSEMBLY    O - Replaced by -821948T 4
 

This part has been superseded.

821948A 4 - COVER ASSEMBLY O [ More info ]
Unavailable
Replaced by -821948T 4
VALVE COVER,NLA 821948T 4
 

About Mercury Marine

OEM Part

821948T 4 - Valve Cover, NLA [ More info ]

Add to shopping cart $385.00
2 in stock. Explain stock levels

#2 25-49767 GROMMET, Rocker Cover (2 required per assembly)
GROMMET           O NLA
25-49767

About Mercury Marine

OEM Part

GROMMET O NLA [ More info ]
Unavailable
#3 24-70086 SPRING, Filler Cap (2 required per assembly) SN# 0A398941 THRU 0D725769
SPRING,NLA 24-70086
 

About Mercury Marine

OEM Part

24-70086 - Spring, NLA [ More info ]

Add to shopping cart $30.00
10+ in stock. Explain stock levels

#4 42336 CAP, Oil Filler (2 required per assembly) SN# 0A398941 THRU 0D725769
CAP               O - Replaced by -49288
 

This part has been superseded.

42336 - CAP O [ More info ]
Unavailable
Replaced by -49288
17345 49288
 

About Mercury Marine

OEM Part

49288 - Cap [ More info ]

Add to shopping cart $18.70
10 in stock. Explain stock levels

CAP 17345
17345

About Mercury Marine

OEM Part

17345 - Oil Filler Cap [ More info ]

Add to shopping cart $25.84
Available to order: Usually ships within 8 days. Explain stock levels

#4 36-811569 CAP, Oil Tank, Oil Filler (2 required per assembly) SN# 0D725770 THRU 0D937011
CAP Oil Tank 36-811569
36-811569

About Mercury Marine

OEM Part

36-811569 - Oil Fill Cap [ More info ]

Add to shopping cart $25.50
2 in stock. Explain stock levels

#5 41598 BREATHER, Rocker Cover (2 required per assembly) 420 Models
41598T 41598
 

About Mercury Marine

OEM Part

41598 - Breather - Black [ More info ]

Add to shopping cart $19.90
1 in stock. Explain stock levels

BREATHER-BLACK    O NLA
 

About Mercury Marine

OEM Part

BREATHER-BLACK O NLA [ More info ]
Unavailable
#5 14902 BREATHER, Rocker Cover (2 required per assembly) 425 Models
BREATHER          O NLA
14902

About Mercury Marine

OEM Part

BREATHER O NLA [ More info ]
Unavailable
#6 37-818991 DECAL, 420 Models (2 required per assembly)
DECAL 37-818991
 

About Mercury Marine

OEM Part

37-818991 - Decal [ More info ]

Add to shopping cart $37.03
Available to order: Usually ships within 8 days. Explain stock levels

#7 16-56766 STUD, (.250-20/.250-28 x 1.380) (14 required per assembly)
STUD (.250-20/.250-28 x 16-56766
16-56766

About Mercury Marine

OEM Part

16-56766 - Stud - Priced Individually [ More info ]

Add to shopping cart $2.50
Available to order: Usually ships within 8 days. Explain stock levels

#8 12-39143 WASHER, (.253 x .625 x .0937) (14 required per assembly)
WASHER (.253 x .625 x . 12-39143
12-39143

About Mercury Marine

OEM Part

12-39143 - Washer - Priced Individually [ More info ]

Add to shopping cart $6.70 $4.53
10+ in stock. Explain stock levels

#9 11-20361 NUT, (.250-28) (14 required per assembly)
118267089 11-20361
11-20361

About Mercury Marine

OEM Part

11-20361 - Nut , Priced Individually [ More info ]

Add to shopping cart $0.60
10+ in stock. Explain stock levels

NUT (.250-28) 11-826708  9
11-826708  9

About Mercury Marine

OEM Part

11-826708 9 - Nut - Priced Individually [ More info ]

Add to shopping cart $1.00
Available to order: Usually ships within 8 days. Explain stock levels

S.S. Steel Locknut
18-3722

About Sierra Marine

OEM Match

18-3722-9 - Lock Nut, 121731, 11-35888 [ More info ]

Add to shopping cart $14.95 $7.67
1 in stock. Explain stock levels

#10 27-14765 GASKET, Rocker Cover (2 required per assembly)
GASKET 27-14765
27-14765

About Mercury Marine

OEM Part

27-14765 - Gasket [ More info ]

Add to shopping cart $130.25
3 in stock. Explain stock levels

Rocker Cover Gasket
18-25001

About Sierra Marine

OEM Match

18-25001 - Gasket 27-14765 - Special Order - No Returns [ More info ]

Add to shopping cart $65.49 $62.70
In stock - special order item. Explain stock levels

#11 848263 PUSH ROD, Vavle (8 required per assembly) Intake
PUSH ROD 848263
848263

About Mercury Marine

OEM Part

848263 - Push Rod [ More info ]

Add to shopping cart $24.64
Available to order: Usually ships within 8 days. Explain stock levels

#11 848266 PUSH ROD, Valve (8 required per assembly) Exhaust
PUSH ROD 848266
848266

About Mercury Marine

OEM Part

848266 - Push Rod [ More info ]

Add to shopping cart $24.64
Available to order: Usually ships within 8 days. Explain stock levels

#12 13024 VALVE, Exhaust - Standard (8 required per assembly)
VALVE             O - Replaced by -843080
13024

This part has been superseded.

13024 - VALVE O [ More info ]
Unavailable
Replaced by -843080
VALVE Exhaust 843080
843080

About Mercury Marine

OEM Part

843080 - Exhaust Valve [ More info ]

Add to shopping cart $119.79
Available to order: Usually ships within 8 days. Explain stock levels

#13 16-95820 STUD, Rocker Arm Valve (16 required per assembly) SN# 0A398941 THRU 0D725499
STUD Rocker Arm Valve 16-95820
16-95820

About Mercury Marine

OEM Part

16-95820 - Stud [ More info ]

Add to shopping cart $10.33
1 in stock. Explain stock levels

#13 16-821836 STUD, Rocker Arm Valve (16 required per assembly) SN# 0D725500 THRU 0D937011
STUD 16-821836
16-821836

About Mercury Marine

OEM Part

16-821836 - Stud [ More info ]

Add to shopping cart $24.89
Available to order: Usually ships within 8 days. Explain stock levels

#14 49132 GUIDE, Push Rod (8 required per assembly) SN# 0A398941 THRU 0D725499
GUIDE 49132
49132

About Mercury Marine

OEM Part

49132 - Guide [ More info ]

Add to shopping cart $12.25
6 in stock. Explain stock levels

#14 811586 GUIDE, Push Rod (8 required per assembly) SN# 0D725500 THRU 0D937011
GUIDE             O - Replaced by -845707
 

This part has been superseded.

811586 - GUIDE O [ More info ]
Unavailable
Replaced by -845707
GUIDE             O - Replaced by -881686
845707

This part has been superseded.

845707 - GUIDE O [ More info ]
Unavailable
Replaced by -881686
GUIDE 881686
881686

About Mercury Marine

OEM Part

881686 - Guide [ More info ]

Add to shopping cart $13.60
Available to order: Usually ships within 8 days. Explain stock levels

#15 24-13455 SPRING, Valve (16 required per assembly)
SPRING            O - Replaced by 24-13455T
 

This part has been superseded.

24-13455 - SPRING O [ More info ]
Unavailable
Replaced by 24-13455T
VAVLE SPRING ASSEMBLY 24-13455T
24-13455T

About Mercury Marine

OEM Part

24-13455T - Spring [ More info ]

Add to shopping cart $26.75
Available to order: Usually ships within 8 days. Explain stock levels

#16 98598 RETAINER, Valve Spring (16 required per assembly)
RETAINER          O - Replaced by -843376
 

This part has been superseded.

98598 - RETAINER O [ More info ]
Unavailable
Replaced by -843376
RETAINER 843376
843376

About Mercury Marine

OEM Part

843376 - Retainer [ More info ]

Add to shopping cart $16.16
Available to order: Usually ships within 8 days. Explain stock levels

#17 15832 SEAL, Valve Stem (16 required per assembly)
SEAL              O - Replaced by 26-827645
 

This part has been superseded.

15832 - SEAL O [ More info ]
Unavailable
Replaced by 26-827645
SEAL Valve 26-827645
26-827645

About Mercury Marine

OEM Part

26-827645 - Seal [ More info ]

Add to shopping cart $17.90 $15.33
Available to order: Usually ships within 8 days. Explain stock levels

#18 15-54531 SHIM, Valve Spring (.015) (16 required per assembly)
SHIM Valve Spring O - Replaced by 15-845669
 

This part has been superseded.

15-54531 - SHIM Valve Spring O [ More info ]
Unavailable
Replaced by 15-845669
SHIM Valve Spring O
 

About Mercury Marine

OEM Part

SHIM Valve Spring O [ More info ]
Unavailable
#18 15-77624 SHIM, Valve Spring (.030) (8 required per assembly)
SHIM Valve Spring (.030 15-77624
 

About Mercury Marine

OEM Part

15-77624 - Shim -.030 [ More info ]

Add to shopping cart $3.50
Available to order: Usually ships within 8 days. Explain stock levels

#19 96028 LOCK, Valve Stem (32 Keys) (1 required per assembly)
LOCK              O NLA
96028

About Mercury Marine

OEM Part

LOCK O NLA [ More info ]
Unavailable
#20 69304 ARM, Valve Rocker (16 required per assembly)
ARM               O - Replaced by -69304T
 

This part has been superseded.

69304 - ARM O [ More info ]
Unavailable
Replaced by -69304T
ROCKER ARM        O NLA
69304T

About Mercury Marine

OEM Part

ROCKER ARM O NLA [ More info ]
Unavailable
#21 11-44481 NUT (16 required per assembly)
NUT               O - Replaced by 11-848610
11-44481

This part has been superseded.

11-44481 - NUT O [ More info ]
Unavailable
Replaced by 11-848610
NUT               O - Replaced by 11-8M0043537
11-848610

This part has been superseded.

11-848610 - NUT O [ More info ]
Unavailable
Replaced by 11-8M0043537
NUT               O
 

About Mercury Marine

OEM Part

NUT O [ More info ]
Unavailable
#22 938-816778 CYLINDER HEAD ASSEMBLY (2 required per assembly) SN# 0A398941 THRU 0D725499
CYLINDER HEAD ASS O - Replaced by 938-816778A 3
 

This part has been superseded.

938-816778 - CYLINDER HEAD ASS O [ More info ]
Unavailable
Replaced by 938-816778A 3
HEAD ASSEMBLY     O - Replaced by 938-816778T 3
 

This part has been superseded.

938-816778A 3 - HEAD ASSEMBLY O [ More info ]
Unavailable
Replaced by 938-816778T 3
HEAD ASSEMBLY 938-816778T 3
 

About Mercury Marine

OEM Part

938-816778T 3 - Cylinder Head Assembly [ More info ]

Add to shopping cart $1,946.86
Available to order: Usually ships within 8 days. Explain stock levels

#22 938-811529A 4 CYLINDER HEAD KIT (2 required per assembly) (.375) 425 Models
CYLINDER HEAD KIT O - Replaced by 938-811529  1
 

This part has been superseded.

938-811529A 4 - CYLINDER HEAD KIT O [ More info ]
Unavailable
Replaced by 938-811529 1
HEAD-CYLINDER     O - Replaced by 938-811529T 1
 

This part has been superseded.

938-811529 1 - HEAD-CYLINDER O [ More info ]
Unavailable
Replaced by 938-811529T 1
HEAD-CYLINDER     O NLA
 

About Mercury Marine

OEM Part

HEAD-CYLINDER O NLA [ More info ]
Unavailable
#22 938-826363 2 CYLINDER HEAD KIT (2 required per assembly) (.437) 425 Models
CYLINDER HEAD KIT O - Replaced by 938-826363  1
 

This part has been superseded.

938-826363 2 - CYLINDER HEAD KIT O [ More info ]
Unavailable
Replaced by 938-826363 1
CYLINDER HEAD     O - Replaced by 938-826363T 1
 

This part has been superseded.

938-826363 1 - CYLINDER HEAD O [ More info ]
Unavailable
Replaced by 938-826363T 1
CYLINDER HEAD     O NLA
 

About Mercury Marine

OEM Part

CYLINDER HEAD O NLA [ More info ]
Unavailable
#23 821024 VALVE, Inlet - Standard (2.250) (8 required per assembly)
VALVE             O - Replaced by -821024T
 

This part has been superseded.

821024 - VALVE O [ More info ]
Unavailable
Replaced by -821024T
VALVE Intake 821024T
821024T

About Mercury Marine

OEM Part

821024T - Inlet Valve [ More info ]

Add to shopping cart $82.92
Available to order: Usually ships within 8 days. Explain stock levels

#24 27-13687 GASKET, Cylinder Head (2 required per assembly) SN# 0A398941 THRU 0D725499
278M0049045 27-13687
27-13687

About Mercury Marine

OEM Part

27-13687 - Head Gasket [ More info ]

Add to shopping cart $59.90
4 in stock. Explain stock levels

GASKET 27-8M0049045
27-8M0049045

About Mercury Marine

OEM Part

27-8M0049045 - Head Gasket ZZ [ More info ]

Add to shopping cart $71.60 $61.31
In stock Explain stock levels

Head Gasket
18-3877

About Sierra Marine

OEM Match

18-3877 - Head Gasket 454 Early Style [ More info ]

Add to shopping cart $53.49 $42.69
1 in stock. Explain stock levels

#24 27-811546 GASKET, Cylinder Head (2 required per assembly) SN# 0D725500 THRU 0D937011
GASKET Cylinder H O - Replaced by 27-879150139
27-811546

This part has been superseded.

27-811546 - GASKET Cylinder H O [ More info ]
Unavailable
Replaced by 27-879150139
GASKET-CYL HEAD 27-879150139
27-879150139

About Mercury Marine

OEM Part

27-879150139 - Cylinder Head Gasket [ More info ]

Add to shopping cart $105.10 $90.00
1 in stock. Explain stock levels

Head Gasket
18-3874

About Sierra Marine

OEM Match

18-3874 - Head Gasket 502 [ More info ]

Add to shopping cart $126.99 $102.82
In stock Explain stock levels

#25 10-49106 1 BOLT (2.00 Inch) Cylinder Head (8 required per assembly)
BOLT              O - Replaced by 10-845706M 2
 

This part has been superseded.

10-49106 1 - BOLT O [ More info ]
Unavailable
Replaced by 10-845706M 2
SCREW (.438-14 x  O NLA
 

About Mercury Marine

OEM Part

SCREW (.438-14 x O NLA [ More info ]
Unavailable
#26 10-49105 BOLT, (4.125 Inch), Cylinder Head (24 required per assembly)
BOLT (4.125 Inch) O - Replaced by 10-845705
 

This part has been superseded.

10-49105 - BOLT (4.125 Inch) O [ More info ]
Unavailable
Replaced by 10-845705
SCREW (.438-14 x  O NLA
 

About Mercury Marine

OEM Part

SCREW (.438-14 x O NLA [ More info ]
Unavailable
#- 27-13218A 1 GASKET SET (1 required per assembly) SN# 0A398941 THRU 0D725499
GASKET SET        O NLA
 

About Mercury Marine

OEM Part

GASKET SET O NLA [ More info ]
Unavailable
#- 27-808730A92 GASKET SET (1 required per assembly) SN# 0D725500 THRU 0D937011
GASKET SET        O - Replaced by 27-808730A98
 

This part has been superseded.

27-808730A92 - GASKET SET O [ More info ]
Unavailable
Replaced by 27-808730A98
GASKET SET        O NLA
27-808730A98

About Mercury Marine

OEM Part

GASKET SET O NLA [ More info ]
Unavailable