MerCruiser 350 MAG MPI HORIZON MIE Closed Cooling System Parts
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Parts for MerCruiser 350 MAG MPI HORIZON MIE Closed Cooling System

Revise Search: Start Over > Different Engine Model > Different Serial Number Range > Different Component
YOU ARE HERE: MERCRUISER > 350 MAG MPI HORIZON MIE > 0L302200 THRU 0M299999 () > Closed Cooling System

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Reference numbers in this diagram can be found in a light blue row below — scroll down to order.
Each product listed is an OEM or aftermarket equivalent part. [ Example ]

Engine Diagram

Reference numbers in this diagram can be found in a light blue row below — scroll down to order.
Each product listed is an OEM or aftermarket equivalent part. [ Example ]

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 - Exchanger-heat (more info) About Mercury Marine $1,515.00 $1,515.00 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 Part number: 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814875This part has been superseded.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 $67.83 $67.83 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27-803644This part has been superseded.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 $16.70 $14.30 Add to shopping cart
Available to order:
Usually ships
within 8 days
#NS
10-814877 BOLT (2 required per assembly)
BOLT 10-814877 Part number: 10-814877
10-814877OEM Part 10-814877 - Bolt (more info) About Mercury Marine $8.50 $8.50 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25-814878This part has been superseded.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 $5.80 $5.80 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 $47.70 $40.84 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 Part number: 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 $23.58 $23.58 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 $61.92 $61.92 Add to shopping cart
Available to order:
Usually ships
within 8 days
#NS
32-77457 2 HOSE, (48.00 Inches Bulk) (1 required per assembly)
HOSE-48 INCH 32-77457  2 Part number: 32-77457  2
32-77457 2OEM Part 32-77457 2 - Hose -48 Inch (more info) About Mercury Marine $51.00 $43.68 Add to shopping cart
10+ in stock. Explain stock levels
#5
71587A11 BOTTLE, Plastic (1 required per assembly)
BOTTLE ASSY 71587A11 Part number: 71587A11
71587A11OEM Part 71587A11 - Bottle Assembly (more info) About Mercury Marine $50.83 $50.83 Add to shopping cart
Available to order:
Usually ships
within 8 days
#6
72058 CAP (1 required per assembly)
CAP 72058 Part number: 72058
72058OEM Part 72058 - Cap (more info) About Mercury Marine $7.10 $7.10 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 Part number: 861188A 1
861188A 1OEM Part 861188A 1 - Thermostat Housing Assembly (more info) About Mercury Marine $358.42 $358.42 Add to shopping cart
Available to order:
Usually ships
within 8 days
Thermostat Housing Part number: 18-3531
18-3531OEM Match 18-3531 - Thermostat Housing 861188A1 (more info) About Sierra Marine $386.69 $316.92 Add to shopping cart
1 in stock. Explain stock levels
#8
25-807134 1 SEAL (1 required per assembly)
SEAL-THERMOSTAT 25-807134  1 Part number: 25-807134  1
25-807134 1OEM Part 25-807134 1 - Thermostat Seal (more info) About Mercury Marine $9.50 $9.50 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, NLA (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 Part number: 22-32803
22-32803OEM Part 22-32803 - Plug (more info) About Mercury Marine $4.60 $4.60 Add to shopping cart
2 in stock. Explain stock levels
Pipe Plug, 3/8-18 Npt Pipe Part number: 18-4264
18-4264OEM Match 18-4264 - Pipe Plug, 3/8-18 NPT Pi (more info) About Sierra Marine $4.48 $3.18 Add to shopping cart
5 in stock. Explain stock levels
#11
99155 1 THERMOSTAT (1 required per assembly)
THERMOSTAT 99155  1 Part number: 99155  1
99155 1OEM Part 99155 1 - Thermostat (more info) About Mercury Marine $19.92 $19.92 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 Part number: 807075A 1
807075A 1OEM Part 807075A 1 - Thermostat Cover Kit (more info) About Mercury Marine $151.42 $151.42 Add to shopping cart
Available to order:
Usually ships
within 8 days
#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 Part number: 10-29198
10-29198OEM Part 10-29198 - Screw w/ Lw - Priced Individually (more info) About Mercury Marine $2.80 $1.89 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 Part number: 10-58640
10-58640OEM Part 10-58640 - Screw - Priced Individually (more info) About Mercury Marine $4.90 $4.90 Add to shopping cart
4 in stock. Explain stock levels
#15
22-35580 FITTING (1 required per assembly)
(350 HORIZON)
ELBOW 22-35580  
22-35580OEM Part 22-35580 - Elbow (more info) About Mercury Marine $6.00 $4.05 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 Part number: 22-32802 2
22-32802 2OEM Part 22-32802 2 - Plug - (brass) - Priced Individually (more info) About Mercury Marine $4.90 $4.90 Add to shopping cart
Available to order:
Usually ships
within 8 days
Pipe Plug, 1/8-27 Npt Pipe Part number: 18-4263
18-4263OEM Match 18-4263 - Pipe Plug, 1/8-27 NPT Pi (more info) About Sierra Marine $4.16 $3.10 Add to shopping cart
10+ 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 Part number: 27-53045 1
27-53045 1OEM Part 27-53045 1 - Gasket - Priced Individually (more info) About Mercury Marine $3.60 $3.60 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 $31.40 $26.89 Add to shopping cart
1 in stock. Explain stock levels
#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 $43.20 $36.99 Add to shopping cart
1 in stock. Explain stock levels
#19
32-807691 HOSE (1 required per assembly)
HOSE-MOLDED 32-807691 Part number: 32-807691
32-807691OEM Part 32-807691 - Hose - Molded (more info) About Mercury Marine $31.40 $26.89 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 $55.40 $47.44 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)
HOSE-44 INCH      O - Replaced by 32-8M0062634 Part number: 32-42850 69
32-42850 69This part has been superseded. HOSE-44 INCH O - Replaced by 32-8M0062634
(more info)
    UnavailableUnavailable Parts
HOSE-44 INCH 32-8M0062634  
32-8M0062634OEM Part 32-8M0062634 - Transom TO THERM Housing Hose -44I (more info) About Mercury Marine $32.50 $27.82 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 $46.00 $39.39 Add to shopping cart
Available to order:
Usually ships
within 8 days
#23
32-808045 HOSE, Fuel Cooler to Transmission Oil Cooler (1 required per assembly)
HOSE-MOLDED 32-808045 Part number: 32-808045
32-808045OEM Part 32-808045 - Hose - Molded (more info) About Mercury Marine $48.60 $41.62 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 - Hose - Molded (more info) About Mercury Marine $22.40 $19.18 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 $23.10 $19.78 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 $22.40 $19.18 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 Part number: 32-808044  1
32-808044 1OEM Part 32-808044 1 - Hose - Molded (more info) About Mercury Marine $73.60 $63.02 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 Part number: 32-860205
32-860205OEM Part 32-860205 - Water Hose (more info) About Mercury Marine $59.10 $50.61 Add to shopping cart
Available to order:
Usually ships
within 8 days
Molded Hose Part number: 18-70951
18-70951OEM Match 18-70951 - Molded Hose (more info) About Sierra Marine $46.99 $46.99 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 Part number: 32-866331
32-866331OEM Part 32-866331 - Hose (more info) About Mercury Marine $10.40 $10.40 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 Part number: 32-821415
32-821415This part has been superseded. HOSE O - Replaced by 32-897145
(more info)
    UnavailableUnavailable Parts
HOSE 32-897145 Part number: 32-897145
32-897145OEM Part 32-897145 - Hose (more info) About Mercury Marine $27.64 $23.67 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 $73.80 $63.20 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 Part number: 22-857175
22-857175OEM Part 22-857175 - Coupling (more info) About Mercury Marine $57.80 $49.50 Add to shopping cart
2 in stock. Explain stock levels
#34
22-861427 CAP (1 required per assembly)
(350 HORIZON)
19858240 861427 Part number: 861427
861427OEM Part 861427 - Cap - Dust (more info) About Mercury Marine $4.68 $4.68 Add to shopping cart
Available to order:
Usually ships
within 8 days
CAP 19-858240  
19-858240OEM Part 19-858240 - Cap (more info) About Mercury Marine $6.10 $6.10 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 Part number: 861505A 1
861505A 1OEM Part 861505A 1 - Drain Kit - Seawater (more info) About Mercury Marine $14.30 $14.30 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 Part number: 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 Part number: 22-806608A02
22-806608A02OEM Part 22-806608A02 - Plug Assembly - Priced Individually (more info) About Mercury Marine $6.40 $6.40 Add to shopping cart
10+ in stock. Explain stock levels
DRAIN PLUG Part number: 18-4226
18-4226OEM Match 18-4226 - Plug, 22-806608A1 (more info) About Sierra Marine $4.32 $2.95 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 Part number: 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 Part number: 18-7165-9
18-7165-9OEM Match 18-7165-9 - O-ring (PK5) OEM #0304174 .500 .065 (more info)
Replaces OEM #0304174
About Sierra Marine $5.14 $3.65 Add to shopping cart
2 in stock. Explain stock levels
#38
54-815504388 CLAMP, Worm Gear (2 required per assembly)
CLAMP 54-815504388 Part number: 54-815504388
54-815504388OEM Part 54-815504388 - Clamp (more info) About Mercury Marine $20.10 $17.21 Add to shopping cart
2 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 $15.20 $15.20 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 $14.00 $14.00 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 Part number: 54-815504220
54-815504220OEM Part 54-815504220 - Clamp (more info) About Mercury Marine $5.20 $5.20 Add to shopping cart
6 in stock. Explain stock levels
#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 Part number: 54-815504222
54-815504222OEM Part 54-815504222 - Clamp - Priced Individually (more info) About Mercury Marine $4.20 $4.20 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 Part number: 54-815504232
54-815504232OEM Part 54-815504232 - Clamp (more info) About Mercury Marine $6.00 $4.05 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 $2.00 $2.00 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 Part number: 27-75611A98
27-75611A98OEM Part 27-75611A98 - Gasket Set (more info) About Mercury Marine $481.75 $481.75 Add to shopping cart
Available to order:
Usually ships
within 8 days

Revise Search: Start Over > Different Engine Model > Different Serial Number Range > Different Component
YOU ARE HERE: MERCRUISER > 350 MAG MPI HORIZON MIE > 0L302200 THRU 0M299999 () > Closed Cooling System

« Previous | Next »

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