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Parts for Mercury Marine Exhaust / Cooling Systems & Extension Kits Closed Cooling System (18390A2 / A3 / A4 / A5)

Engine Diagram

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#- 18390A 2 CLOSED COOLING SYSTEM (1 required per assembly)
COOLING KT-CLOSED O - Replaced by -18390A 4  
18390A 2This part has been superseded. COOLING KT-CLOSED O - Replaced by -18390A 4
(more info)
    UnavailableUnavailable Parts
CLOSED COOLIN KIT O - Replaced by -18390A 7  
18390A 4This part has been superseded. CLOSED COOLIN KIT O - Replaced by -18390A 7
(more info)
    UnavailableUnavailable Parts
COOLING KT-CLOSED O - Replaced by -18390A11  
18390A 7This part has been superseded. COOLING KT-CLOSED O - Replaced by -18390A11
(more info)
    UnavailableUnavailable Parts
COOLING KT-CLOSED O NLA 18390A11
18390A11 COOLING KT-CLOSED O NLA
(more info)
    UnavailableUnavailable Parts
#- 18390A 3 CLOSED COOLING SYSTEM (1 required per assembly)
COOLING KT-CLOSED O - Replaced by -18390A 5  
18390A 3This part has been superseded. COOLING KT-CLOSED O - Replaced by -18390A 5
(more info)
    UnavailableUnavailable Parts
COOLING KT-CLOSED O - Replaced by -18390A 8  
18390A 5This part has been superseded. COOLING KT-CLOSED O - Replaced by -18390A 8
(more info)
    UnavailableUnavailable Parts
COOLING KT-CLOSED O NLA 18390A 8
18390A 8 COOLING KT-CLOSED O NLA
(more info)
    UnavailableUnavailable Parts
#- 18390A 4 CLOSED COOLING SYSTEM (1 required per assembly)
#- 18390A 5 CLOSED COOLING SYSTEM (1 required per assembly)
#1 18390T RESERVOIR (1 required per assembly)
RESERVOIR CAN PULL FROM KIT 18390A6 18390T 18390T
18390TOEM Part 18390T - Heat Exchanger (more info) About Mercury Marine $1,275.00 $687.33 Add to shopping cart
Available to order:
Usually ships
within 8 days
#2 22-36382 FITTING, (.250-18 x .62) Brass (1 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
#3 814875 COVER, Heat Exchanger End (2 required per assembly)
COVER-END         O - Replaced by -8M0036623 814875
814875This part has been superseded. COVER-END O - Replaced by -8M0036623
(more info)
    UnavailableUnavailable Parts
END CAP (4 Inch) 8M0036623  
8M0036623OEM Part 8M0036623 - Cap -end (more info) About Mercury Marine $69.92 $69.92 Add to shopping cart
Available to order:
Usually ships
within 8 days
#4 27-814876 GASKET, End Cover (2 required per assembly)
GASKET            O - Replaced by 27-803644  
27-814876This part has been superseded. GASKET O - Replaced by 27-803644
(more info)
    UnavailableUnavailable Parts
GASKET            O - Replaced by 27-8M0036987  
27-803644This part has been superseded. GASKET O - Replaced by 27-8M0036987
(more info)
    UnavailableUnavailable Parts
GASKET 27-8M0036987 27-8M0036987
27-8M0036987OEM Part 27-8M0036987 - Gasket (more info) About Mercury Marine $17.20 $14.73 Add to shopping cart
2 in stock. Explain stock levels
#5 10-814877 BOLT (2 required per assembly)
BOLT 10-814877 10-814877
10-814877OEM Part 10-814877 - Bolt (more info) About Mercury Marine $8.80 $8.80 Add to shopping cart
Available to order:
Usually ships
within 8 days
#6 25-814878 O-RING, Special (2 required per assembly)
O RING            O - Replaced by 25-8M0039163  
25-814878This part has been superseded. O RING O - Replaced by 25-8M0039163
(more info)
    UnavailableUnavailable Parts
O-RING (3/8 x 1/8 25-8M0039163  
25-8M0039163OEM Part 25-8M0039163 - O-Ring (more info) About Mercury Marine $5.90 $5.90 Add to shopping cart
Available to order:
Usually ships
within 8 days
#7 36-814879 CAP (1 required per assembly)
CAP 36-814879  
36-814879OEM Part 36-814879 - Cap (more info) About Mercury Marine $45.20 $45.20 Add to shopping cart
6 in stock. Explain stock levels
#8 18421A 1 BRACKET (1 required per assembly)
BRKT-MTG-STBD     O - Replaced by -18421A 2  
18421A 1This part has been superseded. BRKT-MTG-STBD O - Replaced by -18421A 2
(more info)
    UnavailableUnavailable Parts
BRACKET KIT,NLA 18421A 2 18421A 2
18421A 2OEM Part 18421A 2 - Bracket Kit, NLA (more info) About Mercury Marine $250.00 $250.00 Add to shopping cart
2 in stock. Explain stock levels
#9 18431 PAD (1 required per assembly)
PAD 18431  
18431OEM Part 18431 - Pad (more info) About Mercury Marine $24.33 $24.33 Add to shopping cart
Available to order:
Usually ships
within 8 days
#10 10-47462 SCREW, (.437-14 x 1.250) (1 required per assembly)
SCREW (.437-14 x 10-47462 10-47462
10-47462OEM Part 10-47462 - Screw - Priced Individually (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
10+ in stock. Explain stock levels
#11 13-32993 LOCKWASHER, (.437) (1 required per assembly)
LOCKWASHER (.437) 13-32993 13-32993
13-32993OEM Part 13-32993 - LockWasher - Priced Individually (more info) About Mercury Marine $1.20 $1.20 Add to shopping cart
4 in stock. Explain stock levels
#12 18423A 1 BRACKET, Port (1 required per assembly)
BRKT-MTG-PORT     O - Replaced by -18423A 2  
18423A 1This part has been superseded. BRKT-MTG-PORT O - Replaced by -18423A 2
(more info)
    UnavailableUnavailable Parts
BRACKET KIT,NLA 18423A 2 18423A 2
18423A 2OEM Part 18423A 2 - Bracket Kit, NLA (more info) About Mercury Marine $250.00 $250.00 Add to shopping cart
1 in stock. Explain stock levels
#13 18429 PAD (1 required per assembly)
PAD               O NLA  
18429 PAD O NLA
(more info)
    UnavailableUnavailable Parts
#14 10-32132 SCREW, (.375-16 x 1.750) (2 required per assembly)
SCREW (.375-16 x 10-32132 10-32132
10-32132OEM Part 10-32132 - Screw (more info) About Mercury Marine $2.00 $2.00 Add to shopping cart
2 in stock. Explain stock levels
#15 32-18427 2 HOSE (1 required per assembly)
HOSE              O NLA  
32-18427 2 HOSE O NLA
(more info)
    UnavailableUnavailable Parts
#16 32-53461 70 HOSE, (48.00 Inches Bulk) (2 required per assembly) (18390A2 / A4)
32865672070 32-53461 70 32-53461 70
32-53461 70OEM Part 32-53461 70 - Hose -48 Inch (more info) About Mercury Marine $64.45 $64.45 Add to shopping cart
8 in stock. Explain stock levels
HOSE-48 INCH       - Replaced by 32-8M0062665 32-865672070
32-865672070This part has been superseded. HOSE-48 INCH - Replaced by 32-8M0062665
(more info)
    UnavailableUnavailable Parts
HOSE (48.00 Inche 32-8M0062665 328M0062665
328M0062665OEM Part 328M0062665 - Hose (more info) About Mercury Marine $67.17 $67.17 Add to shopping cart
Available to order:
Usually ships
within 8 days
Molded Hose 18-75125
18-75125OEM Match 18-75125 - Straight Hose (more info)
Replaces OEM #0912793
About Sierra Marine $36.99 $29.83 Add to shopping cart
Available to order:
Usually ships
within 8 days
#17 32-816284 HOSE (1 required per assembly) (Used in 18390A3 and A5 Kit)
HOSE ,NLA 32-816284  
32-816284OEM Part 32-816284 - Hose, NLA (more info) About Mercury Marine $150.00 $150.00 Add to shopping cart
1 in stock. Explain stock levels
#18 55131A 5 HOUSING ASSEMBLY, Thermostat (Includes #23 cover) (1 required per assembly)
HOUSING ASSEMBLY 55131A 5 55131A 5
55131A 5OEM Part 55131A 5 - Housing Assembly (more info) About Mercury Marine $291.58 $291.58 Add to shopping cart
Available to order:
Usually ships
within 8 days
#19 27-47510 GASKET (1 required per assembly) (Used in 18390A2 and A4 Kit)
GASKET Note: must be ordered in multiples of 2 27-47510 27-47510
27-47510OEM Part 27-47510 - Gasket - Priced Individually (more info) About Mercury Marine $2.40 $2.40 Add to shopping cart
2 in stock. Explain stock levels
Gasket 18-2553-9
18-2553-9OEM Match 18-2553-9 - Gasket 27-47510 2-Pack (more info) About Sierra Marine $4.98 $3.01 Add to shopping cart
Available to order:
Usually ships
within 8 days
#20 23-47508 SLEEVE (1 required per assembly) (Used in 18390A2 and A4 Kit)
SLEEVE-THERMOSTAT O - Replaced by 23-47508T  
23-47508This part has been superseded. SLEEVE-THERMOSTAT O - Replaced by 23-47508T
(more info)
    UnavailableUnavailable Parts
SLEEVE 23-47508T 23-47508T
23-47508TOEM Part 23-47508T - Thermostat Sleeve (more info) About Mercury Marine $12.83 $12.83 Add to shopping cart
10+ in stock. Explain stock levels
#21 27-48818 1 GASKET (1 required per assembly)
GASKET Note: must be ordered in multiples of 2 27-48818  1 27-48818 1
27-48818 1OEM Part 27-48818 1 - Gasket - Priced Individually (more info) About Mercury Marine $2.00 $2.00 Add to shopping cart
4 in stock. Explain stock levels
GASKET   27 48818Q01 27-48818Q01
27-48818Q01OEM Part 27-48818Q01 - Gasket (more info) About Mercury Marine $2.50 $2.50 Add to shopping cart
Available to order:
Usually ships
within 8 days
#22 97428 COVER, Design I (1 required per assembly) (Used in 18390A2 / A3 / A4)
COVER             O - Replaced by -97428F 2  
97428This part has been superseded. COVER O - Replaced by -97428F 2
(more info)
    UnavailableUnavailable Parts
COVER-THERMOSTAT  O - Replaced by -97428T 2  
97428F 2This part has been superseded. COVER-THERMOSTAT O - Replaced by -97428T 2
(more info)
    UnavailableUnavailable Parts
COVER-THERMOSTAT,NLA 97428T 2 97428T 2
97428T 2OEM Part 97428T 2 - Thermostat Cover, NLA (more info) About Mercury Marine $30.00 $30.00 Add to shopping cart
8 in stock. Explain stock levels
T-STAT HOUSING MC-29-97428 MC-29-97428
MC-29-97428OEM Match MC-29-97428 - Thermostat Housing (more info) About Barr Marine by EDM $36.00 $28.12 Add to shopping cart
1 in stock. Explain stock levels
#23 97428T 2 COVER, Thermostat, Design II (1 required per assembly) (Used in 18390A5)
#24 10-48115 SCREW, (.375-16 x 3.50) (2 required per assembly)
SCREW,NLA 10-48115  
10-48115OEM Part 10-48115 - Screw, NLA (more info) About Mercury Marine $2.00 $2.00 Add to shopping cart
10+ in stock. Explain stock levels
#25 22-36305 ELBOW, (90 Degrees) (2 required per assembly)
ELBOW             O - Replaced by 22-36305T  
22-36305This part has been superseded. ELBOW O - Replaced by 22-36305T
(more info)
    UnavailableUnavailable Parts
ELBOW 22-36305T 22-36305T
22-36305TOEM Part 22-36305T - Elbow (more info) About Mercury Marine $31.70 $27.14 Add to shopping cart
Available to order:
Usually ships
within 8 days
Fitting, Brass 18-8216
18-8216OEM Match 18-8216 - Brass Fitting, 22-36305 (more info) About Sierra Marine $25.54 $19.60 Add to shopping cart
Available to order:
Usually ships
within 8 days
#26 32-33220 70 HOSE, (48.00 Inches Bulk) (4 required per assembly) (Used in 18390A2 / A3)
HOSE-48 INCH      O - Replaced by 32-8M0062614 32-33220 70
32-33220 70This part has been superseded. HOSE-48 INCH O - Replaced by 32-8M0062614
(more info)
    UnavailableUnavailable Parts
HOSE (48.00 Inche 32-8M0062614 32-8M0062614
32-8M0062614OEM Part 32-8M0062614 - Water Hose (more info) About Mercury Marine $59.30 $50.77 Add to shopping cart
Available to order:
Usually ships
within 8 days
#27 71587A10 RECOVERY KIT, Coolant (Component parts can be purchased locally.) (1 required per assembly)
RECOVERY KIT Cool 71587A10  
71587A10OEM Part 71587A10 - ReCovery Kit (more info) About Mercury Marine $64.92 $64.92 Add to shopping cart
2 in stock. Explain stock levels
#28 71587A11 BOTTLE, Plastic (1 required per assembly)
BOTTLE Plastic 71587A11 71587A11
71587A11OEM Part 71587A11 - Bottle Assembly (more info) About Mercury Marine $52.42 $52.42 Add to shopping cart
Available to order:
Usually ships
within 8 days
#29 72058 CAP (1 required per assembly)
CAP 72058 72058
72058OEM Part 72058 - Cap (more info) About Mercury Marine $7.30 $7.30 Add to shopping cart
2 in stock. Explain stock levels
#30 27-41811 GASKET (2 required per assembly)
GASKET            O - Replaced by 27-860231  
27-41811This part has been superseded. GASKET O - Replaced by 27-860231
(more info)
    UnavailableUnavailable Parts
GASKET            O - Replaced by 27-863725 27-860231
27-860231This part has been superseded. GASKET O - Replaced by 27-863725
(more info)
    UnavailableUnavailable Parts
GASKET            * - Replaced by 27-863725  1 27-863725
27-863725This part has been superseded. GASKET * - Replaced by 27-863725 1
(more info)
    UnavailableUnavailable Parts
GASKET 27-863725  1 27-863725  1
27-863725 1OEM Part 27-863725 1 - Gasket (more info) About Mercury Marine $14.00 $14.00 Add to shopping cart
4 in stock. Explain stock levels
Elbow Gasket 18-0672-9
18-0672-9OEM Match 18-0672-9 - Gasket 27-41811 2-Pack (more info) About Sierra Marine $23.98 $19.50 Add to shopping cart
3 in stock. Explain stock levels
SS PLATE,BLOCK OFF MC-20-87918 MC-20-87918
MC-20-87918OEM Match MC-20-87918 - Block Off Plate, SS (more info) About Barr Marine by EDM $14.00 $10.93 Add to shopping cart
2 in stock. Explain stock levels
#31 22-55133T TEE (1 required per assembly)
FITTING           O - Replaced by 22-55133  
22-55133TThis part has been superseded. FITTING O - Replaced by 22-55133
(more info)
    UnavailableUnavailable Parts
FITTING TEE       O NLA 22-55133
22-55133 FITTING TEE O NLA
(more info)
    UnavailableUnavailable Parts
#32 32-817439 3 HOSE (1 required per assembly) (Used in 18390A4 / A5)
HOSE-MOLDED,NLA 32-817439  3 32-817439  3
32-817439 3OEM Part 32-817439 3 - Molded Hose, NLA (more info) About Mercury Marine $18.00 $18.00 Add to shopping cart
10+ in stock. Explain stock levels
#34 18389T BRACKET (2 required per assembly) (Used in 18390A2 / A4)
BRACKET,NLA 18389T 18389T
18389TOEM Part 18389T - Bracket, NLA (more info) About Mercury Marine $20.00 $20.00 Add to shopping cart
7 in stock. Explain stock levels
#35 18392T BRACKET (2 required per assembly) (Used in 18390A2 / A4)
BRACKET-CLAMP     O NLA  
18392T BRACKET-CLAMP O NLA
(more info)
    UnavailableUnavailable Parts
#36 10-60300 SCREW, (.250-28 x .750) (4 required per assembly) (Used in 18390A2 / A4)
SCREW (.250-28 x 10-60300 10-60300
10-60300OEM Part 10-60300 - Screw - Priced Individually (more info) About Mercury Marine $0.80 $0.80 Add to shopping cart
Available to order:
Usually ships
within 8 days
#37 11-30506 NUT, (.250-28) (4 required per assembly) (Used in 18390A2 / A4)
NUT (.250-28) 11-30506 11-30506
11-30506OEM Part 11-30506 - Nut (more info) About Mercury Marine $2.10 $2.10 Add to shopping cart
7 in stock. Explain stock levels
#38 10-48424 SCREW, (.375-16 x 1.620) (1 required per assembly) (Used in 18390A2 / A4)
SCREW (.375-16 x 10-48424 10-48424
10-48424OEM Part 10-48424 - Screw (more info) About Mercury Marine $2.00 $2.00 Add to shopping cart
10+ in stock. Explain stock levels
#39 12-46132 WASHER (1 required per assembly) (Used in 18390A2 / A4)
WASHER 12-46132  
12-46132OEM Part 12-46132 - Washer (more info) About Mercury Marine $2.10 $2.10 Add to shopping cart
1 in stock. Explain stock levels
#40 18391T COOLER, Oil (1 required per assembly) (Used in 18390A2 / A4)
COOLER-OIL        O NLA  
18391T COOLER-OIL O NLA
(more info)
    UnavailableUnavailable Parts
#41 816766 END COVER (2 required per assembly) (Used in 18390A2 / A4)
END CAP           O NLA 816766
816766 END CAP O NLA
(more info)
    UnavailableUnavailable Parts
#42 27-814881 GASKET (2 required per assembly) (Used in 18390A2 / A4)
GASKET,NLA 27-814881  
27-814881OEM Part 27-814881 - Gasket (more info) About Mercury Marine $20.00 $20.00 Add to shopping cart
10+ in stock. Explain stock levels
#43 10-814882 BOLT (2 required per assembly) (Used in 18390A2 / A4)
BOLT,NLA 10-814882  
10-814882OEM Part 10-814882 - Bolt, NLA (more info) About Mercury Marine $5.00 $5.00 Add to shopping cart
10+ in stock. Explain stock levels
#44 32-92357 24 HOSE, (11.50 Inches) (1 required per assembly) (Used in 18390A2 / A4)
HOSE-11.50 INCH,NLA 32-92357 24  
32-92357 24OEM Part 32-92357 24 - Hose -11.50 Inch, NLA (more info) About Mercury Marine $75.00 $75.00 Add to shopping cart
5 in stock. Explain stock levels
#45 22-63825 ELBOW (1 required per assembly) (Used in 18390A3 / A5)
ELBOW 22-63825  
22-63825OEM Part 22-63825 - Elbow (more info) About Mercury Marine $20.42 $20.42 Add to shopping cart
1 in stock. Explain stock levels
#46 22-48872 FITTING, 45 Degree Elbow (1 required per assembly) (Used in 18390A2 / A4)
FITTING 45 Degree 22-48872  
22-48872OEM Part 22-48872 - Elbow (more info) About Mercury Marine $60.17 $60.17 Add to shopping cart
1 in stock. Explain stock levels
#47 32-18456 HOSE (1 required per assembly) (Used in 18390A2 / A4)
HOSE              O NLA  
32-18456 HOSE O NLA
(more info)
    UnavailableUnavailable Parts
#48 87-86080 SWITCH, Temperature (1 required per assembly)
SWITCH Temperatur 87-86080 87-86080
87-86080OEM Part 87-86080 - Switch (more info) About Mercury Marine $82.42 $82.42 Add to shopping cart
1 in stock. Explain stock levels
#49 54-815504372 CLAMP, Worm Gear (AR required per assembly)
CLAMP Worm Gear 54-815504372 54-815504372
54-815504372OEM Part 54-815504372 - Clamp (more info) About Mercury Marine $11.30 $11.30 Add to shopping cart
8 in stock. Explain stock levels
Hose Clamp 18-7316
18-7316OEM Match 18-7316 - Hose Clamps, 72 (more info) About Sierra Marine $9.26 $7.11 Add to shopping cart
5 in stock. Explain stock levels
#50 54-815504206 CLAMP, Worm Gear (AR required per assembly)
CLAMP Worm Gear 54-815504206  
54-815504206OEM Part 54-815504206 - Clamp (more info) About Mercury Marine $4.70 $4.70 Add to shopping cart
Available to order:
Usually ships
within 8 days
#51 54-815504220 CLAMP, Worm Gear (AR required per assembly)
CLAMP Worm Gear 54-815504220 54-815504220
54-815504220OEM Part 54-815504220 - Clamp (more info) About Mercury Marine $5.40 $5.40 Add to shopping cart
Available to order:
Usually ships
within 8 days
#52 54-815504232 CLAMP, Worm Gear (2.50 Diameter) (AR required per assembly)
CLAMP Worm Gear ( 54-815504232 54-815504232
54-815504232OEM Part 54-815504232 - Clamp (more info) About Mercury Marine $6.20 $4.19 Add to shopping cart
10+ in stock. Explain stock levels
#53 27-53045 1 GASKET (1 required per assembly)
GASKET Note: must be ordered in multiples of 5 27-53045  1 27-53045 1
27-53045 1OEM Part 27-53045 1 - Gasket - Priced Individually (more info) About Mercury Marine $3.70 $3.70 Add to shopping cart
10+ in stock. Explain stock levels
Thermostat Gasket 18-2917-9
18-2917-9OEM Match 18-2917-9 - Gasket 27-530451 2-Pack (more info) About Sierra Marine $5.98 $3.65 Add to shopping cart
10+ in stock. Explain stock levels
GASKET   27 53045Q01 27-53045Q01
27-53045Q01OEM Part 27-53045Q01 - Gasket (more info) About Mercury Marine $3.90 $3.90 Add to shopping cart
Available to order:
Usually ships
within 8 days