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Parts for MerCruiser Race Engine and Drive 420 GM 454 V-8 1987-1989 Cylinder Block & Camshaft

Engine Diagram

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 816185A17 LONG BLOCK ASSEMBLY (1 required per assembly) 420 And 425 Models - See Note 1 SN# 0A398941 THRU 0D725499
REF MCM PB 94-02  O NLA  
816185A17 REF MCM PB 94-02 O NLA
(more info)
    UnavailableUnavailable Parts
#1 847705A13 LONG BLOCK ASSEMBLY (1 required per assembly) 425 Models - See Note 1 SN# 0D725500 THRU 0D937011
LONG BLOCK-425    O - Replaced by -847705A14  
847705A13This part has been superseded. LONG BLOCK-425 O - Replaced by -847705A14
(more info)
    UnavailableUnavailable Parts
PARTIAL ENG-425   O NLA  
847705A14 PARTIAL ENG-425 O NLA
(more info)
    UnavailableUnavailable Parts
#1 842-9638 CYLINDER BLOCK ASSEMBLY (1 required per assembly) 420 And 425 Models - See Note 2 SN# 0A398941 THRU 0D725499
BLOCK ASSY        O NLA  
842-9638 BLOCK ASSY O NLA
(more info)
    UnavailableUnavailable Parts
#1 842-801999 BLOCK ASSEMBLY, Cylinder (1 required per assembly) 425 Models - See Note 2 SN# 0D725500 THRU 0D937011
BLOCK ASSY        O NLA  
842-801999 BLOCK ASSY O NLA
(more info)
    UnavailableUnavailable Parts
#2 22-48340 PLUG, (.250-18 x .41) (4 required per assembly)
2232561 22-48340  
22-48340OEM Part 22-48340 - Plug (more info) About Mercury Marine $2.70 $2.70 Add to shopping cart
10+ in stock. Explain stock levels
PLUG Pipe - Allen 22-32561 22-32561
22-32561OEM Part 22-32561 - Plug - Priced Individually (more info) About Mercury Marine $4.60 $4.60 Add to shopping cart
10+ in stock. Explain stock levels
#2 22-48358 PLUG, (.375) (2 required per assembly)
PLUG              O - Replaced by 22-48358T  
22-48358This part has been superseded. PLUG O - Replaced by 22-48358T
(more info)
    UnavailableUnavailable Parts
PLUG              O - Replaced by 22-12524  
22-48358TThis part has been superseded. PLUG O - Replaced by 22-12524
(more info)
    UnavailableUnavailable Parts
PLUG (.375-18 x . 22-12524  
22-12524OEM Part 22-12524 - Plug (more info) About Mercury Marine $3.60 $3.60 Add to shopping cart
Available to order:
Usually ships
within 8 days
#3 22-36382 FITTING, (.250-18 x .62) Brass (2 required per assembly)
FITTING (.250-18 22-36382 22-36382
22-36382OEM Part 22-36382 - Plug (more info) About Mercury Marine $3.90 $3.90 Add to shopping cart
2 in stock. Explain stock levels
Pipe Plug 18-8111-9
18-8111-9OEM Match 18-8111-9 - Pipe Plug (PK3) (more info) About Sierra Marine $10.77 $7.50 Add to shopping cart
10+ in stock. Explain stock levels
#4 19-37478 PLUG, Expansion (1.750 Inch) (8 required per assembly)
PLUG              O - Replaced by 22-69300  
19-37478This part has been superseded. PLUG O - Replaced by 22-69300
(more info)
    UnavailableUnavailable Parts
EXPANSION PLUG (1 22-69300 22-69300
22-69300OEM Part 22-69300 - Plug (more info) About Mercury Marine $12.57 $12.57 Add to shopping cart
Available to order:
Usually ships
within 8 days
#5 17-52190 PIN (4 required per assembly)
PIN 17-52190  
17-52190OEM Part 17-52190 - Pin -Dowel (more info) About Mercury Marine $7.50 $7.50 Add to shopping cart
Available to order:
Usually ships
within 8 days
#6 19-94140 EXPANSION PLUG (1 required per assembly)
EXPANSION PLUG 19-94140  
19-94140OEM Part 19-94140 - Plug (more info) About Mercury Marine $3.60 $2.02 Add to shopping cart
7 in stock. Explain stock levels
#7 23-85684 BEARING SET (1 required per assembly)
BEARING SET 23-85684 23-85684
23-85684OEM Part 23-85684 - Bearing Set (more info) About Mercury Marine $88.00 $88.00 Add to shopping cart
Available to order:
Usually ships
within 8 days
#8 93722 LIFTER (16 required per assembly)
LIFTER            O - Replaced by -93722T  
93722This part has been superseded. LIFTER O - Replaced by -93722T
(more info)
    UnavailableUnavailable Parts
LIFTER 93722T 93722T
93722TOEM Part 93722T - Lifter (more info) About Mercury Marine $89.12 $89.12 Add to shopping cart
Available to order:
Usually ships
within 8 days
#9 451-7892 CAMSHAFT (1 required per assembly)
CAMSHAFT          O NLA 451-7892
451-7892 CAMSHAFT O NLA
(more info)
    UnavailableUnavailable Parts
#10 61728 CHAIN, Timing (1 required per assembly) SN# 0A398941 THRU 0D725499
TIMING CHAIN-DBL,NLA 61728 61728
61728OEM Part 61728 - Timing Chain-DBL, NLA (more info) About Mercury Marine $80.00 $80.00 Add to shopping cart
1 in stock. Explain stock levels
#10 811580 CHAIN, Timing (1 required per assembly) SN# 0D725500 THRU 0D937011
CHAIN-TIMING      O - Replaced by -811580T  
811580This part has been superseded. CHAIN-TIMING O - Replaced by -811580T
(more info)
    UnavailableUnavailable Parts
CHAIN-TIMING      O - Replaced by -845796T  
811580TThis part has been superseded. CHAIN-TIMING O - Replaced by -845796T
(more info)
    UnavailableUnavailable Parts
CHAIN 845796T 845796T
845796TOEM Part 845796T - Timing Chain (more info) About Mercury Marine $189.08 $189.08 Add to shopping cart
Available to order:
Usually ships
within 8 days
#11 43-61726 SPROCKET, Camshaft (1 required per assembly) SN# 0A398941 THRU 0D725499
SPROCKET,NLA 43-61726 43-61726
43-61726OEM Part 43-61726 - Sprocket, NLA (more info) About Mercury Marine $30.00 $30.00 Add to shopping cart
10+ in stock. Explain stock levels
#11 43-811578 SPROCKET, Camshaft (1 required per assembly) SN# 0D725500 THRU 0D937011
SPROCKET 43-811578 43-811578
43-811578OEM Part 43-811578 - Sprocket (more info) About Mercury Marine $132.42 $132.42 Add to shopping cart
Available to order:
Usually ships
within 8 days
#12 43-61727 SPROCKET, Crankshaft (1 required per assembly) SN# 0A398941 THRU 0D725499
SPROCKET,NLA 43-61727 43-61727
43-61727OEM Part 43-61727 - Sprocket, NLA (more info) About Mercury Marine $52.50 $52.50 Add to shopping cart
2 in stock. Explain stock levels
#12 43-811579 SPROCKET, Crankshaft (1 required per assembly) SN# 0D725500 THRU 0D937011
SPROCKET          O - Replaced by 43-845794T  
43-811579This part has been superseded. SPROCKET O - Replaced by 43-845794T
(more info)
    UnavailableUnavailable Parts
SPROCKET 43-845794T 43-845794T
43-845794TOEM Part 43-845794T - Sprocket (more info) About Mercury Marine $89.55 $89.55 Add to shopping cart
Available to order:
Usually ships
within 8 days
#13 10-35339 SCREW, (.312-18 x .750) (3 required per assembly)
SCREW             O - Replaced by 10-845942  
10-35339This part has been superseded. SCREW O - Replaced by 10-845942
(more info)
    UnavailableUnavailable Parts
SCREW (.312-18 x 10-845942 10-845942
10-845942OEM Part 10-845942 - Screw (more info) About Mercury Marine $4.20 $4.20 Add to shopping cart
Available to order:
Usually ships
within 8 days
#14 12-39167 WASHER (3 required per assembly)
12848136 12-39167  
12-39167OEM Part 12-39167 - Washer (more info) About Mercury Marine $0.80 $0.80 Add to shopping cart
3 in stock. Explain stock levels
WASHER (.328 x .6 12-848136  
12-848136OEM Part 12-848136 - Washer (more info) About Mercury Marine $20.42 $20.42 Add to shopping cart
Available to order:
Usually ships
within 8 days
#15 17-35312 PIN, Dowel (.250) (1 required per assembly)
PIN-DOWEL         O - Replaced by 17-843378  
17-35312This part has been superseded. PIN-DOWEL O - Replaced by 17-843378
(more info)
    UnavailableUnavailable Parts
PIN Dowel 17-843378  
17-843378OEM Part 17-843378 - Pin -Dowel (more info) About Mercury Marine $10.60 $10.60 Add to shopping cart
1 in stock. Explain stock levels
#- 27-13218A 1 GASKET SET (1 required per assembly) SN# 0A398941 THRU 0D725499
GASKET SET        O NLA  
27-13218A 1 GASKET SET O NLA
(more info)
    UnavailableUnavailable Parts
#- 27-808730A92 GASKET SET (1 required per assembly) SN# 0D725500 THRU 0D937011
GASKET SET        O - Replaced by 27-808730A98  
27-808730A92This part has been superseded. GASKET SET O - Replaced by 27-808730A98
(more info)
    UnavailableUnavailable Parts
GASKET SET        O NLA 27-808730A98
27-808730A98 GASKET SET O NLA
(more info)
    UnavailableUnavailable Parts