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Parts for Mercury Marine 40 HP (2 Cylinder) Cylinder Block & Thermostat

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 851-7940A 2 CYLINDER BLOCK ASSEMBLY (1 required per assembly)
CYLINDER BLOCK    O - Replaced by 851-7940A 6  
851-7940A 2This part has been superseded. CYLINDER BLOCK O - Replaced by 851-7940A 6
(more info)
    UnavailableUnavailable Parts
CYLINDER BLOCK    O NLA  
851-7940A 6 CYLINDER BLOCK O NLA
(more info)
    UnavailableUnavailable Parts
#2 66843 BRACKET, COIL MOUNTING (1 required per assembly)
BRACKET           O - Replaced by -66843T  
66843This part has been superseded. BRACKET O - Replaced by -66843T
(more info)
    UnavailableUnavailable Parts
BRACKET,NLA 66843T  
66843TOEM Part 66843T - Bracket, NLA (more info) About Mercury Marine $44.00 $44.00 Add to shopping cart
1 in stock. Explain stock levels
#3 66844 COVER, DIAPHRAGM (1 required per assembly) WITH THERMOSTAT
COVER             O - Replaced by -99436A 1  
66844This part has been superseded. COVER O - Replaced by -99436A 1
(more info)
    UnavailableUnavailable Parts
COVER ASSY,NLA 99436A 1  
99436A 1OEM Part 99436A 1 - Cover Assembly, NLA (more info) About Mercury Marine $10.00 $10.00 Add to shopping cart
10+ in stock. Explain stock levels
#4 64877 DIAPHRAGM, POPPET VALVE (1 required per assembly) WITH THERMOSTAT
DIAPHRAGM         O - Replaced by -64877  1 64877
64877This part has been superseded. DIAPHRAGM O - Replaced by -64877 1
(more info)
    UnavailableUnavailable Parts
DIAPHRAGM 64877  1 64877  1
64877 1OEM Part 64877 1 - Diaphragm (more info) About Mercury Marine $6.60 $6.60 Add to shopping cart
Available to order:
Usually ships
within 8 days
#5 12-76451 WASHER, DIAPHRAGM (1 required per assembly) WITH THERMOSTAT
WASHER Note: must be ordered in multiples of 2 12-76451 12-76451
12-76451OEM Part 12-76451 - Washer - Priced Individually (more info) About Mercury Marine $1.90 $1.90 Add to shopping cart
10 in stock. Explain stock levels
#6 10-69570 SCREW, (#10-16 x .750), WASHER AND DIAPHRAGM (1 required per assembly) WITH THERMOSTAT
SCREW (#10-16 x . 10-69570 10-69570
10-69570OEM Part 10-69570 - Screw (more info) About Mercury Marine $1.30 $1.30 Add to shopping cart
5 in stock. Explain stock levels
#7 75692 THERMOSTAT (1 required per assembly) WITH THERMOSTAT
THERMOSTAT 75692 75692
75692OEM Part 75692 - Thermostat -143 (more info) About Mercury Marine $14.92 $14.92 Add to shopping cart
5 in stock. Explain stock levels
Thermostat 18-3553
18-3553OEM Match 18-3553 - Thermostat, 75692 (more info) About Sierra Marine $14.99 $13.58 Add to shopping cart
10+ in stock. Explain stock levels
#8 27-62386 GASKET, THERMOSTAT (1 required per assembly) WITH THERMOSTAT
GASKET @4         O - Replaced by 27-62386001 27-62386
27-62386This part has been superseded. GASKET @4 O - Replaced by 27-62386001
(more info)
    UnavailableUnavailable Parts
GASKET Note: must be ordered in multiples of 4 27-62386001 27-62386001
27-62386001OEM Part 27-62386001 - Gasket - Priced Individually (more info) About Mercury Marine $1.90 $1.90 Add to shopping cart
10+ in stock. Explain stock levels
Gasket, Thermostat 18-0182-9
18-0182-9OEM Match 18-0182-9 - Gasket 27-62386 2-Pack (more info)
Replaces OEM #0310058
About Sierra Marine $3.98 $2.71 Add to shopping cart
2 in stock. Explain stock levels
#9 86596 POPPET VALVE, RELIEF VALVE (1 required per assembly) WITH THERMOSTAT
POPPET VALVE 86596 86596
86596OEM Part 86596 - Poppet (more info) About Mercury Marine $7.80 $7.80 Add to shopping cart
4 in stock. Explain stock levels
#10 24-66852 SPRING, COMPRESSION (1 required per assembly) WITH THERMOSTAT
SPRING,NLA 24-66852  
24-66852OEM Part 24-66852 - Spring, NLA (more info) About Mercury Marine $18.75 $18.75 Add to shopping cart
10+ in stock. Explain stock levels
#11 65848 CARRIER, POPPET VALVE (1 required per assembly) WITH THERMOSTAT
CARRIER 65848 65848
65848OEM Part 65848 - Carrier (more info) About Mercury Marine $2.30 $2.30 Add to shopping cart
2 in stock. Explain stock levels
#12 25-64872 GROMMET, POPPET VALVE (1 required per assembly) WITH THERMOSTAT
GROMMET Note: must be ordered in multiples of 2 25-64872 25-64872
25-64872OEM Part 25-64872 - Grommet - Priced Individually (more info) About Mercury Marine $2.40 $2.40 Add to shopping cart
3 in stock. Explain stock levels
#13 99436A 1 COVER ASSEMBLY, COIL BRACKET (1 required per assembly) W/O THERMOSTAT
#14 25-64067 O-RING, COVER (1 required per assembly) W/O THERMOSTAT
25823683 25-64067 25-64067
25-64067OEM Part 25-64067 - O-Ring - Priced Individually (more info) About Mercury Marine $1.65 $1.65 Add to shopping cart
10+ in stock. Explain stock levels
O-RING (1.989 x . 25-823683 25-823683
25-823683OEM Part 25-823683 - O-Ring (more info) About Mercury Marine $2.10 $2.10 Add to shopping cart
2 in stock. Explain stock levels
O-Ring 18-7414-9
18-7414-9OEM Match 18-7414-9 - O-Ring (PK5) 25-64067 (more info) About Sierra Marine $12.45 $12.45 Add to shopping cart
1 in stock. Explain stock levels
#15 10-31984 SCREW, (.312-18 x 1.375) (1 required per assembly)
SCREW (.312-18 x 10-31984 10-31984
10-31984OEM Part 10-31984 - Screw - Priced Individually (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
1 in stock. Explain stock levels
#16 10-88760 SCREW, (.312-18 x 1.250) (1 required per assembly)
SCREW,NLA 10-88760  
10-88760OEM Part 10-88760 - Screw, NLA (more info) About Mercury Marine $5.00 $5.00 Add to shopping cart
10+ in stock. Explain stock levels
#17 10-58414 SCREW (2-1/2") (1 required per assembly)
SCREW,NLA 10-58414  
10-58414OEM Part 10-58414 - Screw, NLA (more info) About Mercury Marine $2.00 $2.00 Add to shopping cart
10+ in stock. Explain stock levels
#18 13-26993 LOCKWASHER, (.312), COIL MOUNTING BRACKET SCREW (3 required per assembly)
LOCKWASHER (.312) 13-26993  
13-26993OEM Part 13-26993 - LockWasher - Priced Individually (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
10+ in stock. Explain stock levels
#19 25-39597 GROMMET, COIL MOUNTING BRACKET (1 required per assembly)
GROMMET,NLA 25-39597  
25-39597OEM Part 25-39597 - Grommet, NLA (more info) About Mercury Marine $7.00 $7.00 Add to shopping cart
8 in stock. Explain stock levels
#20 27-66847 GASKET, COIL MOUNTING BRACKET TO BLOCK (1 required per assembly)
GASKET Note: must be ordered in multiples of 2 27-66847 27-66847
27-66847OEM Part 27-66847 - Gasket - Priced Individually (more info) About Mercury Marine $3.80 $3.80 Add to shopping cart
Available to order:
Usually ships
within 8 days
#21 32-99387 79 HOSE, CYLINDER BLEED (8") (1 required per assembly)
HOSE 32-99387 79 32-99387 79
32-99387 79OEM Part 32-99387 79 - Hose -27 Inch (more info) About Mercury Marine $10.30 $10.30 Add to shopping cart
5 in stock. Explain stock levels
#22 21-77560 CHECK VALVE, CYLINDER BLEED (TOP) (1 required per assembly)
CHECK VALVE       O - Replaced by 21-42866  
21-77560This part has been superseded. CHECK VALVE O - Replaced by 21-42866
(more info)
    UnavailableUnavailable Parts
CHECK VALVE 21-42866 21-42866
21-42866OEM Part 21-42866 - Check Valve (more info) About Mercury Marine $42.83 $42.83 Add to shopping cart
10+ in stock. Explain stock levels
#23 21-77207 FITTING, CYLINDER BLEED (BOTTOM) (1 required per assembly)
CHECK VALVE       O - Replaced by 21-42863  
21-77207This part has been superseded. CHECK VALVE O - Replaced by 21-42863
(more info)
    UnavailableUnavailable Parts
CHECK VALVE,NLA 21-42863 21-42863
21-42863OEM Part 21-42863 - Check Valve, NLA (more info) About Mercury Marine $35.00 $35.00 Add to shopping cart
10+ in stock. Explain stock levels
#24 58124A17 SWITCH ASSEMBLY, MERCURY (1 required per assembly) SN# USA-5823917/Australia-8070639/Belgium-9298955/Canada-7169337 & Below
SWITCH ASSY,NLA 58124A17 58124A17
58124A17OEM Part 58124A17 - Switch Assembly, NLA (more info) About Mercury Marine $50.00 $50.00 Add to shopping cart
2 in stock. Explain stock levels
#24 58124A24 SWITCH ASSEMBLY, MERCURY (1 required per assembly) SN# USA-5823918/Australia-8070640/Belgium-9298956/Canada-7169338 & Up
SWITCH ASSY       O - Replaced by -58124A27  
58124A24This part has been superseded. SWITCH ASSY O - Replaced by -58124A27
(more info)
    UnavailableUnavailable Parts
SWITCH ASSY,NLA 58124A27  
58124A27OEM Part 58124A27 - Switch Assembly, NLA (more info) About Mercury Marine $40.00 $40.00 Add to shopping cart
10 in stock. Explain stock levels
#25 10-48409 SCREW, (#10-16 x .625) Stainless Steel (1 required per assembly)
SCREW (#10-16 x . 10-48409 10-48409
10-48409OEM Part 10-48409 - Screw - Priced Individually (more info) About Mercury Marine $1.60 $1.60 Add to shopping cart
10+ in stock. Explain stock levels
#26 76184 INDICATOR, TIMING (1 required per assembly) ELECTRIC
INDICATOR,NLA 76184  
76184OEM Part 76184 - Indicator, NLA (more info) About Mercury Marine $11.25 $11.25 Add to shopping cart
10+ in stock. Explain stock levels
#27 10-25299 SCREW, (.312-18 x .75), INDICATOR ATTACHING (1 required per assembly) ELECTRIC
SCREW (.312-18 x 10-25299 10-25299
10-25299OEM Part 10-25299 - Screw - Priced Individually (more info) About Mercury Marine $0.30 $0.30 Add to shopping cart
7 in stock. Explain stock levels
#28 12-20084 WASHER, (.328 x .562 x .062), INDICATOR ATTACHING SCREW (1 required per assembly) ELECTRIC
WASHER (.328 x .5 12-20084 12-20084
12-20084OEM Part 12-20084 - Washer - Priced Individually (more info) About Mercury Marine $2.07 $2.07 Add to shopping cart
10+ in stock. Explain stock levels
#29 17-29908 PIN, INDICATOR LOCATING (1 required per assembly) ELECTRIC
PIN 17-29908  
17-29908OEM Part 17-29908 - Pin -roll - Priced Individually (more info) About Mercury Marine $2.15 $2.15 Add to shopping cart
Available to order:
Usually ships
within 8 days
#- 27-78028A78 GASKET SET (1 required per assembly)
GASKET SET 27-78028A78 27-78028A78
27-78028A78OEM Part 27-78028A78 - Gasket Set (more info) About Mercury Marine $53.92 $53.92 Add to shopping cart
1 in stock. Explain stock levels
Powerhead Gasket Set 18-4355
18-4355OEM Match 18-4355 - Gasket Set, 27-78028A78 (more info) About Sierra Marine $59.99 $47.54 Add to shopping cart
Available to order:
Usually ships
within 8 days