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Parts for MerCruiser 350 Mag MPI Horizon MIE Closed Cooling System

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 860234A 1 HEAT EXCHANGER (1 required per assembly)
EXCHANGER-HEAT 860234A 1  
860234A 1OEM Part 860234A 1 - Heat Exchanger (more info) About Mercury Marine $1,557.07 $1,557.07 Add to shopping cart
Available to order:
Usually ships
within 8 days
#NS 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814875This part has been superseded.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
CAP-END 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
#NS 27-803644 GASKET (2 required per assembly)
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27-803644This part has been superseded.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  
27-8M0036987OEM Part 27-8M0036987 - Gasket (more info) About Mercury Marine $17.20 $14.73 Add to shopping cart
2 in stock. Explain stock levels
#NS 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
#NS 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25-814878This part has been superseded.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 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
#NS 36-814879 1 CAP (1 required per assembly)
CAP-PRESSURE 36-814879  1  
36-814879 1OEM Part 36-814879 1 - Pressure Cap (more info) About Mercury Marine $41.00 $41.00 Add to shopping cart
Available to order:
Usually ships
within 8 days
#2 860326A 1 BRACKET ASSEMBLY, Heat Exchanger (1 required per assembly)
BRACKET ASSY 860326A 1 860326A 1
860326A 1OEM Part 860326A 1 - Bracket Assembly (more info) About Mercury Marine $143.83 $96.00 Add to shopping cart
1 in stock. Explain stock levels
#3 18431 PAD (2 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
#4 71587A10 RECOVERY KIT, Coolant (1 required per assembly) (Complete Only-Purchase Component Parts Locally)
RECOVERY KIT 71587A10  
71587A10OEM Part 71587A10 - ReCovery Kit (more info) About Mercury Marine $64.92 $64.92 Add to shopping cart
3 in stock. Explain stock levels
#NS 32-77457 2 HOSE, (48.00 Inches Bulk) (1 required per assembly)
HOSE-48 INCH 32-77457  2 32-77457  2
32-77457 2OEM Part 32-77457 2 - Hose -48 Inch (more info) About Mercury Marine $49.92 $49.92 Add to shopping cart
10+ in stock. Explain stock levels
#5 71587A11 BOTTLE, Plastic (1 required per assembly)
BOTTLE ASSY 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
#6 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
Available to order:
Usually ships
within 8 days
#7 861188A 1 HOUSING ASSEMBLY, Thermostat (1 required per assembly)
HSG ASY-THERMOSTA 861188A 1 861188A 1
861188A 1OEM Part 861188A 1 - Thermostat Housing Assembly (more info) About Mercury Marine $370.08 $370.08 Add to shopping cart
Available to order:
Usually ships
within 8 days
Thermostat Housing 18-3531
18-3531OEM Match 18-3531 - Thermostat Housing 861188A1 (more info) About Sierra Marine $429.66 $336.75 Add to shopping cart
1 in stock. Explain stock levels
#8 25-807134 1 SEAL (1 required per assembly)
SEAL-THERMOSTAT 25-807134  1 25-807134  1
25-807134 1OEM Part 25-807134 1 - Thermostat Seal (more info) About Mercury Marine $9.70 $9.70 Add to shopping cart
Available to order:
Usually ships
within 8 days
#9 23-52020 SLEEVE, Hose (1 required per assembly)
SLEEVE,NLA 23-52020  
23-52020OEM Part 23-52020 - Sleeve (more info) About Mercury Marine $30.00 $30.00 Add to shopping cart
2 in stock. Explain stock levels
#10 22-32803 PLUG, Pipe (.375-18) Brass (1 required per assembly)
PLUG 22-32803 22-32803
22-32803OEM Part 22-32803 - Plug (more info) About Mercury Marine $4.70 $4.70 Add to shopping cart
3 in stock. Explain stock levels
Pipe Plug, 3/8-18 Npt Pipe 18-4264
18-4264OEM Match 18-4264 - Pipe Plug, 3/8-18 NPT Pi (more info) About Sierra Marine $4.76 $3.31 Add to shopping cart
8 in stock. Explain stock levels
#11 99155 1 THERMOSTAT (1 required per assembly)
THERMOSTAT 99155  1 99155  1
99155 1OEM Part 99155 1 - Thermostat (more info) About Mercury Marine $20.17 $20.17 Add to shopping cart
Available to order:
Usually ships
within 8 days
#12 807075A 1 COVER (1 required per assembly)
COVER KIT-THERMOS 807075A 1 807075A 1
807075A 1OEM Part 807075A 1 - Thermostat Cover Kit (more info) About Mercury Marine $156.08 $156.08 Add to shopping cart
1 in stock. Explain stock levels
#13 10-29198 SCREW AND LOCKWASHER, (.312-18 x .875) (2 required per assembly)
SCREW W/LW Note: must be ordered in multiples of 5 10-29198 10-29198
10-29198OEM Part 10-29198 - Screw w/ Lw - Priced Individually (more info) About Mercury Marine $2.90 $1.96 Add to shopping cart
10+ in stock. Explain stock levels
#14 10-58640 SCREW, (.375-16 x 1.25) (2 required per assembly)
SCREW Note: must be ordered in multiples of 5 10-58640 10-58640
10-58640OEM Part 10-58640 - Screw - Priced Individually (more info) About Mercury Marine $5.10 $5.10 Add to shopping cart
Available to order:
Usually ships
within 8 days
#15 22-35580 FITTING (1 required per assembly) (350 HORIZON)
ELBOW 22-35580  
22-35580OEM Part 22-35580 - Elbow (more info) About Mercury Marine $6.20 $4.19 Add to shopping cart
10+ in stock. Explain stock levels
#15 22-32802 2 PLUG, Pipe (.125-27) Brass (1 required per assembly) (350 MAG MPI)
PLUG-(BRASS)Note: must be ordered in multiples of 2 22-32802  2 22-32802 2
22-32802 2OEM Part 22-32802 2 - Plug - (brass) - Priced Individually (more info) About Mercury Marine $5.50 $5.50 Add to shopping cart
1 in stock. Explain stock levels
Pipe Plug, 1/8-27 Npt Pipe 18-4263
18-4263OEM Match 18-4263 - Pipe Plug, 1/8-27 NPT Pi (more info) About Sierra Marine $4.29 $3.10 Add to shopping cart
6 in stock. Explain stock levels
#16 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
#17 32-860380 HOSE (1 required per assembly)
HOSE-WATER 32-860380  
32-860380OEM Part 32-860380 - Water Hose (more info) About Mercury Marine $27.00 $27.00 Add to shopping cart
Available to order:
Usually ships
within 8 days
#18 32-860327 HOSE (2 required per assembly) (PORT AND STARBOARD)
HOSE-WATER 32-860327  
32-860327OEM Part 32-860327 - Water Hose (more info) About Mercury Marine $37.08 $37.08 Add to shopping cart
Available to order:
Usually ships
within 8 days
#19 32-807691 HOSE (1 required per assembly)
HOSE-MOLDED 32-807691 32-807691
32-807691OEM Part 32-807691 - Molded Hose (more info) About Mercury Marine $27.00 $27.00 Add to shopping cart
Available to order:
Usually ships
within 8 days
#20 32-861059 HOSE (1 required per assembly)
HOSE-WATER 32-861059  
32-861059OEM Part 32-861059 - Water Hose (more info) About Mercury Marine $47.58 $47.58 Add to shopping cart
Available to order:
Usually ships
within 8 days
#21 32-42850 69 HOSE, (44.00 Inches Bulk) (1 required per assembly)
328M0062634 32-42850 69 32-42850 69
32-42850 69OEM Part 32-42850 69 - Hose -44 Inch (more info) About Mercury Marine $32.67 $32.67 Add to shopping cart
2 in stock. Explain stock levels
HOSE-44 INCH 32-8M0062634  
32-8M0062634OEM Part 32-8M0062634 - Transom TO Thermostat Housing Hose -44I (more info) About Mercury Marine $27.92 $27.92 Add to shopping cart
Available to order:
Usually ships
within 8 days
#22 32-860332 HOSE (1 required per assembly)
HOSE-WATER 32-860332  
32-860332OEM Part 32-860332 - Water Hose (more info) About Mercury Marine $39.50 $39.50 Add to shopping cart
1 in stock. Explain stock levels
#23 32-808045 HOSE, Fuel Cooler to Transmission Oil Cooler (1 required per assembly)
HOSE-MOLDED 32-808045 32-808045
32-808045OEM Part 32-808045 - Molded Hose (more info) About Mercury Marine $41.58 $41.58 Add to shopping cart
Available to order:
Usually ships
within 8 days
#24 32-860482 HOSE, Water Pump To Intake Manifold (1 required per assembly)
HOSE-WATER        O - Replaced by 32-99520  
32-860482This part has been superseded. HOSE-WATER O - Replaced by 32-99520
(more info)
    UnavailableUnavailable Parts
HOSE-MOLDED 32-99520  
32-99520OEM Part 32-99520 - Molded Hose (more info) About Mercury Marine $19.25 $19.25 Add to shopping cart
Available to order:
Usually ships
within 8 days
#25 22-860346 FITTING, Elbow (90 Degree) (.750) (1 required per assembly)
ELBOW 22-860346  
22-860346OEM Part 22-860346 - Elbow (more info) About Mercury Marine $19.83 $19.83 Add to shopping cart
Available to order:
Usually ships
within 8 days
#26 22-808042 FITTING, Elbow (90 Degrees) (.50 NPT x .75 Bars) (1 required per assembly)
CONNECTOR 22-808042  
22-808042OEM Part 22-808042 - Connector (more info) About Mercury Marine $19.25 $19.25 Add to shopping cart
Available to order:
Usually ships
within 8 days
#27 32-808044 1 HOSE, Molded (1 required per assembly)
HOSE-MOLDED 32-808044  1 32-808044  1
32-808044 1OEM Part 32-808044 1 - Molded Hose (more info) About Mercury Marine $62.92 $62.92 Add to shopping cart
Available to order:
Usually ships
within 8 days
#27 32-860205 HOSE, Oil Cooler to Sea Water Pump (1 required per assembly) (350 HORIZON)
HOSE-WATER 32-860205 32-860205
32-860205OEM Part 32-860205 - Water Hose (more info) About Mercury Marine $50.75 $50.75 Add to shopping cart
2 in stock. Explain stock levels
Molded Hose 18-70951
18-70951OEM Match 18-70951 - Molded Hose (more info) About Sierra Marine $49.46 $49.46 Add to shopping cart
1 in stock. Explain stock levels
#28 32-807694 40 HOSE, (4.00 Inches) (1 required per assembly) (350 HORIZON)
HOSE-4 INCH        - Replaced by 32-807694075  
32-807694 40This part has been superseded. HOSE-4 INCH - Replaced by 32-807694075
(more info)
    UnavailableUnavailable Parts
HOSE              O - Replaced by 32-866331  
32-807694075This part has been superseded. HOSE O - Replaced by 32-866331
(more info)
    UnavailableUnavailable Parts
HOSE 32-866331 32-866331
32-866331OEM Part 32-866331 - Hose (more info) About Mercury Marine $10.70 $10.70 Add to shopping cart
Available to order:
Usually ships
within 8 days
#29 32-821415 HOSE, Seawater Pump To T-Fitting (1 required per assembly) (350 HORIZON)
HOSE              O - Replaced by 32-897145 32-821415
32-821415This part has been superseded. HOSE O - Replaced by 32-897145
(more info)
    UnavailableUnavailable Parts
HOSE 32-897145 32-897145
32-897145OEM Part 32-897145 - Hose (more info) About Mercury Marine $23.75 $23.75 Add to shopping cart
Available to order:
Usually ships
within 8 days
#30 22-861339T Y-FITTING (w/Drain) (1 required per assembly) (350 HORIZON)
ORD 22-862993     O NLA  
22-861339T ORD 22-862993 O NLA
(more info)
    UnavailableUnavailable Parts
#32 22-861406 SOCKET (1 required per assembly) (350 HORIZON)
SOCKET-QUICK CONN 22-861406  
22-861406OEM Part 22-861406 - Socket-quick Connector, NLA (more info) About Mercury Marine $67.67 $67.67 Add to shopping cart
Available to order:
Usually ships
within 8 days
#33 22-861405 FITTING (1 required per assembly) (350 HORIZON)
PLUG-QUICK CONN   O - Replaced by 22-857175  
22-861405This part has been superseded. PLUG-QUICK CONN O - Replaced by 22-857175
(more info)
    UnavailableUnavailable Parts
COUPLING 22-857175 22-857175
22-857175OEM Part 22-857175 - Coupling (more info) About Mercury Marine $50.58 $50.58 Add to shopping cart
4 in stock. Explain stock levels
#34 22-861427 CAP (1 required per assembly) (350 HORIZON)
CAP-DUST          O - Replaced by 19-858240 861427
861427This part has been superseded. CAP-DUST O - Replaced by 19-858240
(more info)
    UnavailableUnavailable Parts
CAP 19-858240  
19-858240OEM Part 19-858240 - Cap (more info) About Mercury Marine $6.60 $6.60 Add to shopping cart
Available to order:
Usually ships
within 8 days
#35 861505A 1 T-FITTING (1 required per assembly) (350 HORIZON)
DRAIN KT-SEAWATER 861505A 1 861505A 1
861505A 1OEM Part 861505A 1 - Drain Kit - SeaWater (more info) About Mercury Marine $14.80 $14.80 Add to shopping cart
Available to order:
Usually ships
within 8 days
#36 22-806608A 1 PLUG KIT, (.500-13) Royal Blue (2 required per assembly) (350 HORIZON)
PLUG KIT @5       O - Replaced by 22-806608A02 22-806608A 1
22-806608A 1This part has been superseded. PLUG KIT @5 O - Replaced by 22-806608A02
(more info)
    UnavailableUnavailable Parts
PLUG ASSY Note: must be ordered in multiples of 5 22-806608A02 22-806608A02
22-806608A02OEM Part 22-806608A02 - Plug Assembly - Priced Individually (more info) About Mercury Marine $6.60 $6.60 Add to shopping cart
8 in stock. Explain stock levels
DRAIN PLUG 18-4226
18-4226OEM Match 18-4226 - Drain Plug, 22-806608A1 (more info) About Sierra Marine $4.44 $2.97 Add to shopping cart
10+ in stock. Explain stock levels
#37 25-32509 O-RING, (.489 x .070) (2 required per assembly) (350 HORIZON)
O RING Note: must be ordered in multiples of 10 25-32509 25-32509
25-32509OEM Part 25-32509 - O-Ring - Priced Individually (more info) About Mercury Marine $1.50 $1.50 Add to shopping cart
10+ in stock. Explain stock levels
O-Ring 18-7165-9
18-7165-9OEM Match 18-7165-9 - O-Ring (PK5) , 0304174 (more info)
Replaces OEM #0304174
About Sierra Marine $5.50 $3.88 Add to shopping cart
1 in stock. Explain stock levels
#38 54-815504388 CLAMP, Worm Gear (2 required per assembly)
CLAMP 54-815504388 54-815504388
54-815504388OEM Part 54-815504388 - Clamp (more info) About Mercury Marine $18.33 $18.33 Add to shopping cart
1 in stock. Explain stock levels
#39 54-815504520 CLAMP, Worm Gear (16 required per assembly) (350 HORIZON)
CLAMP             O NLA  
54-815504520 CLAMP O NLA
(more info)
    UnavailableUnavailable Parts
#40 54-815504522 CLAMP, Worm Gear (2 required per assembly) (350 HORIZON)
CLAMP 54-815504522  
54-815504522OEM Part 54-815504522 - Clamp (more info) About Mercury Marine $15.70 $15.70 Add to shopping cart
Available to order:
Usually ships
within 8 days
#41 54-815504528 CLAMP, Worm Gear (2 required per assembly) (350 HORIZON)
CLAMP 54-815504528  
54-815504528OEM Part 54-815504528 - Clamp (more info) About Mercury Marine $14.40 $14.40 Add to shopping cart
Available to order:
Usually ships
within 8 days
#42 54-815504512 CLAMP, Worm Gear (2 required per assembly) (350 HORIZON)
CLAMP 54-815504512  
54-815504512OEM Part 54-815504512 - Clamp (more info) About Mercury Marine $14.30 $14.30 Add to shopping cart
Available to order:
Usually ships
within 8 days
#39 54-815504220 CLAMP, Worm Gear (12 required per assembly) (350 MAG MPI)
CLAMP 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
#40 54-815504222 CLAMP, Worm Gear (1.98 DIameter) (2 required per assembly) (350 MAG MPI)
CLAMP Note: must be ordered in multiples of 5 54-815504222 54-815504222
54-815504222OEM Part 54-815504222 - Clamp - Priced Individually (more info) About Mercury Marine $4.30 $4.30 Add to shopping cart
Available to order:
Usually ships
within 8 days
#41 54-815504232 CLAMP, Worm Gear (2.50 Diameter) (2 required per assembly) (350 MAG MPI)
CLAMP 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
#NS 19-807992 3 COVER, Hose Clamp End (AR required per assembly)
COVER-.375 @20    O - Replaced by 19-8M6500037  
19-807992 3This part has been superseded. COVER-.375 @20 O - Replaced by 19-8M6500037
(more info)
    UnavailableUnavailable Parts
COVER-CLAMP @20   O - Replaced by 19-8M0074364  
19-8M6500037This part has been superseded. COVER-CLAMP @20 O - Replaced by 19-8M0074364
(more info)
    UnavailableUnavailable Parts
COVER-CLAMP Note: must be ordered in multiples of 20 19-8M0074364  
198M0074364OEM Part 198M0074364 - Cover-Clamp Note: Must be ordered in multiples of 20 (more info) About Mercury Marine $2.10 $2.10 Add to shopping cart
Available to order:
Usually ships
within 8 days
#- 27-75611A98 GASKET SET, Engine Overhaul (1 required per assembly)
GASKET SET 27-75611A98 27-75611A98
27-75611A98OEM Part 27-75611A98 - Gasket Set (more info) About Mercury Marine $478.50 $478.50 Add to shopping cart
Available to order:
Usually ships
within 8 days