Logo

Parts for MerCruiser 454 Mag. MPI Horizon (Gen. VI) GM 454 V-8 Closed Cooling System (454 Mag Mpi Horizon)

#1 807400A 1 HEAT EXCHANGER (1 required per assembly)
EXCHANGER-HEAT 807400A 1
 

About Mercury Marine

OEM Part

807400A 1 - Heat Exchanger [ More info ]

Add to shopping cart $1,716.36
In stock Explain stock levels

#NS 814875 COVER, Heat Exchanger End (2 required per assembly)
814875 - COVER Heat Exchan O - Replaced by -8M0036623
814875

This part has been superseded.

814875 - 814875 - COVER Heat Exchan O [ More info ]
Unavailable
Replaced by -8M0036623
CAP-END 8M0036623
 

About Mercury Marine

OEM Part

8M0036623 - Cap -end [ More info ]

Add to shopping cart $77.58
Available to order: Usually ships within 8 days. Explain stock levels

#NS 27-814876 GASKET, End Cover (2 required per assembly)
27-814876 - GASKET End Cover  O - Replaced by 27-803644
 

This part has been superseded.

27-814876 - 27-814876 - GASKET End Cover O [ More info ]
Unavailable
Replaced by 27-803644
27-803644 - GASKET            O - Replaced by 27-8M0036987
 

This part has been superseded.

27-803644 - 27-803644 - GASKET O [ More info ]
Unavailable
Replaced by 27-8M0036987
GASKET 27-8M0036987
27-8M0036987

About Mercury Marine

OEM Part

27-8M0036987 - Gasket [ More info ]

Add to shopping cart $19.20 $16.44
Available to order: Usually ships within 8 days. Explain stock levels

#NS 10-814877 BOLT (2 required per assembly)
BOLT 10-814877
10-814877

About Mercury Marine

OEM Part

10-814877 - Bolt [ More info ]

Add to shopping cart $9.50
Available to order: Usually ships within 8 days. Explain stock levels

#NS 25-814878 O-RING, Special (2 required per assembly)
258M0039163 25-814878
 

About Mercury Marine

OEM Part

25-814878 - O RING [ More info ]

Add to shopping cart $4.58
2 in stock. Explain stock levels

O RING 25-8M0039163
 

About Mercury Marine

OEM Part

25-8M0039163 - O-Ring [ More info ]

Add to shopping cart $6.50
Available to order: Usually ships within 8 days. Explain stock levels

#NS 36-814879 1 CAP (1 required per assembly)
CAP-PRESSURE 36-814879  1
 

About Mercury Marine

OEM Part

36-814879 1 - Pressure Cap [ More info ]

Add to shopping cart $54.60 $46.76
Available to order: Usually ships within 8 days. Explain stock levels

#2 860092A 1 BRACKET ASSEMBLY, Heat Exchanger (1 required per assembly)
BRACKET ASSEMBLY Heat E 860092A 1
860092A 1

About Mercury Marine

OEM Part

860092A 1 - Bracket [ More info ]

Add to shopping cart $363.33 $105.12
Available to order: Usually ships within 8 days. Explain stock levels

#3 18431 PAD (2 required per assembly)
PAD 18431
 

About Mercury Marine

OEM Part

18431 - Pad [ More info ]

Add to shopping cart $26.42
Available to order: Usually ships within 8 days. Explain stock levels

#4 10-91903 SCREW, (.437-14 x 1.750) (1 required per assembly)
SCREW (.437-14 x 1.750) 10-91903
10-91903

About Mercury Marine

OEM Part

10-91903 - Screw [ More info ]

Add to shopping cart $3.60
Available to order: Usually ships within 8 days. Explain stock levels

#4 10-47461 SCREW, (.437-14 x 1.00) (1 required per assembly)
SCREW (.437-14 x 1.00) 10-47461
10-47461

About Mercury Marine

OEM Part

10-47461 - Screw [ More info ]

Add to shopping cart $1.60
7 in stock. Explain stock levels

#5 12-31263 WASHER (4 required per assembly)
WASHER Note: must be ordered in multiples of 5 12-31263
 

About Mercury Marine

OEM Part

12-31263 - Washer - Priced Individually [ More info ]

Add to shopping cart $0.70
10+ in stock. Explain stock levels

#6 23-90520 1 SPACER, (.750 x .250) (2 required per assembly)
SPACER (.750 x .250) 23-90520  1
 

About Mercury Marine

OEM Part

23-90520 1 - Spacer [ More info ]

Add to shopping cart $6.00
4 in stock. Explain stock levels

#7 54-815504388 CLAMP, Worm Gear (2 required per assembly)
CLAMP Worm Gear 54-815504388
54-815504388

About Mercury Marine

OEM Part

54-815504388 - Clamp [ More info ]

Add to shopping cart $19.92
Available to order: Usually ships within 8 days. Explain stock levels

#8 71587A10 RECOVERY KIT, Coolant (1 required per assembly) SEE NOTE
RECOVERY KIT Coolant 71587A10
 

About Mercury Marine

OEM Part

71587A10 - Coolant Recovery Kit [ More info ]

Add to shopping cart $72.08
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

About Mercury Marine

OEM Part

32-77457 2 - Hose -48 Inch [ More info ]

Add to shopping cart $54.08
Available to order: Usually ships within 8 days. Explain stock levels

#9 71587A11 BOTTLE, Plastic (1 required per assembly)
BOTTLE ASSY 71587A11
71587A11

About Mercury Marine

OEM Part

71587A11 - Coolant Recovery Bottle [ More info ]

Add to shopping cart $56.42
Available to order: Usually ships within 8 days. Explain stock levels

#10 72058 CAP (1 required per assembly)
CAP 72058
72058

About Mercury Marine

OEM Part

72058 - Bottle Cap [ More info ]

Add to shopping cart $8.50
2 in stock. Explain stock levels

#11 861188A 1 HOUSING ASSEMBLY, Thermostat (1 required per assembly)
HSG ASY-THERMOSTA 861188A 1
861188A 1

About Mercury Marine

OEM Part

861188A 1 - Thermostat Housing Assembly [ More info ]

Add to shopping cart $401.42
Available to order: Usually ships within 8 days. Explain stock levels

Thermostat Housing
18-3531

About Sierra Marine

OEM Match

18-3531 - Thermostat Housing 861188A1 [ More info ]

Add to shopping cart $340.99 $265.72
1 in stock. Explain stock levels

#12 25-807134 SEAL (1 required per assembly)
25-807134 - SEAL              * - Replaced by 25-807134  1
25-807134

This part has been superseded.

25-807134 - 25-807134 - SEAL * [ More info ]
Unavailable
Replaced by 25-807134 1
SEAL-THERMOSTAT 25-807134  1
25-807134  1

About Mercury Marine

OEM Part

25-807134 1 - Thermostat Seal [ More info ]

Add to shopping cart $10.40
1 in stock. Explain stock levels

#13 23-52020 SLEEVE, Hose (1 required per assembly)
SLEEVE,NLA 23-52020
 

About Mercury Marine

OEM Part

23-52020 - Sleeve [ More info ]

Add to shopping cart $30.00
2 in stock. Explain stock levels

#14 22-32803 PLUG, Pipe (.375-18) Brass (1 required per assembly)
PLUG Pipe (.375-18) Bra 22-32803
22-32803

About Mercury Marine

OEM Part

22-32803 - Plug [ More info ]

Add to shopping cart $5.10
Available to order: Usually ships within 8 days. Explain stock levels

Pipe Plug  3/8-18 Npt Pipe
18-4264

About Sierra Marine

OEM Match

18-4264 - Pipe Plug, 3/8-18 NPT [ More info ]

Add to shopping cart $4.11 $3.51
Available to order: Usually ships within 8 days. Explain stock levels

#15 99155 1 THERMOSTAT (1 required per assembly)
THERMOSTAT 99155  1
99155  1

About Mercury Marine

OEM Part

99155 1 - Thermostat [ More info ]

Add to shopping cart $21.09
1 in stock. Explain stock levels

THERMOSTAT KIT      99155T 1
99155T 1

About Mercury Marine

OEM Part

99155T 1 - Thermostat Kit [ More info ]

Add to shopping cart $22.58
Available to order: Usually ships within 8 days. Explain stock levels

#16 807075A 1 COVER (1 required per assembly)
COVER KIT-THERMOS 807075A 1
807075A 1

About Mercury Marine

OEM Part

807075A 1 - Thermostat Cover Kit [ More info ]

Add to shopping cart $173.50
1 in stock. Explain stock levels

#17 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

About Mercury Marine

OEM Part

10-29198 - Screw w/ Lw - Priced Individually [ More info ]

Add to shopping cart $3.20 $2.16
10+ in stock. Explain stock levels

#18 10-98794 SCREW, (.375-16 x 1.00) (2 required per assembly)
108M0113180 10-98794
10-98794

About Mercury Marine

OEM Part

10-98794 - Screw [ More info ]

Add to shopping cart $3.20
Available to order: Usually ships within 8 days. Explain stock levels

Screw  Upper Drive Cap
18-3231

About Sierra Marine

OEM Match

18-3231 - Bolt, 10-98794 [ More info ]

Add to shopping cart $2.99 $2.41
Available to order: Usually ships within 8 days. Explain stock levels

#19 22-32802 1 PLUG, Pipe (.125-27) (1 required per assembly)
22-32802  1 - PLUG Pipe (.125-2 O - Replaced by 22-32802  2
22-32802  1

This part has been superseded.

22-32802 1 - 22-32802 1 - PLUG Pipe (.125-2 O [ More info ]
Unavailable
Replaced by 22-32802 2
PLUG-(BRASS)Note: must be ordered in multiples of 2 22-32802  2
22-32802  2

About Mercury Marine

OEM Part

22-32802 2 - Plug, Brass - Priced Individually [ More info ]

Add to shopping cart $5.80
10+ in stock. Explain stock levels

Pipe Plug  1/8-27 Npt Pipe
18-4263

About Sierra Marine

OEM Match

18-4263 - Pipe Plug, 1/8-27 NPT, Brass [ More info ]

Add to shopping cart $4.49 $3.24
10+ in stock. Explain stock levels

#20 27-53045 1 GASKET (1 required per assembly)
GASKET Note: must be ordered in multiples of 5 27-53045  1
27-53045  1

About Mercury Marine

OEM Part

27-53045 1 - Gasket - Priced Individually [ More info ]

Add to shopping cart $3.90
10+ in stock. Explain stock levels

Thermostat Gasket
18-2917

About Sierra Marine

OEM Match

18-2917-9 - Gasket 27-530451 2-Pack [ More info ]

Add to shopping cart $7.98 $5.23
3 in stock. Explain stock levels

GASKET   27 53045Q01
27 53045Q01

About Mercury Marine

OEM Part

27-53045Q01 - Gasket [ More info ]

Add to shopping cart $4.10
10+ in stock. Explain stock levels

#21 32-807271 HOSE (1 required per assembly)
HOSE-MOLDED 32-807271
32-807271

About Mercury Marine

OEM Part

32-807271 - Molded Hose [ More info ]

Add to shopping cart $56.25
Available to order: Usually ships within 8 days. Explain stock levels

#22 32-861306 HOSE (1 required per assembly)
HOSE-MOLDED 32-861306
 

About Mercury Marine

OEM Part

32-861306 - Molded Hose [ More info ]

Add to shopping cart $49.08
Available to order: Usually ships within 8 days. Explain stock levels

#23 32-807141 HOSE (1 required per assembly)
HOSE-MOLDED 32-807141
 

About Mercury Marine

OEM Part

32-807141 - Molded Hose [ More info ]

Add to shopping cart $44.75
1 in stock. Explain stock levels

#24 54-815504520 CLAMP, Worm Gear (6 required per assembly)
CLAMP 54-815504520
 

About Mercury Marine

OEM Part

54-815504520 - Clamp [ More info ]

Add to shopping cart $5.00
1 in stock. Explain stock levels

#25 32-807137 HOSE, Thermostat Housing To Heat Exchanger (1 required per assembly)
HOSE-MOLDED 32-807137
32-807137

About Mercury Marine

OEM Part

32-807137 - Molded Hose [ More info ]

Add to shopping cart $38.08
Available to order: Usually ships within 8 days. Explain stock levels

#26 54-815504522 CLAMP, Worm Gear (2 required per assembly)
CLAMP Worm Gear 54-815504522
 

About Mercury Marine

OEM Part

54-815504522 - Clamp [ More info ]

Add to shopping cart $6.00
10+ in stock. Explain stock levels

#27 32-805138 HOSE, Water Pump To Heat Exchanger (1 required per assembly)
32-805138 - HOSE              O
32-805138

About Mercury Marine

OEM Part

32-805138 - HOSE O [ More info ]
Unavailable
#28 54-815504528 CLAMP, Worm Gear (2 required per assembly)
CLAMP Worm Gear 54-815504528
 

About Mercury Marine

OEM Part

54-815504528 - Clamp [ More info ]

Add to shopping cart $8.00
6 in stock. Explain stock levels

#29 32-99520 HOSE (1 required per assembly)
HOSE-MOLDED 32-99520
32-99520

About Mercury Marine

OEM Part

32-99520 - Molded Hose [ More info ]

Add to shopping cart $25.10 $21.50
Available to order: Usually ships within 8 days. Explain stock levels

#30 54-815504512 CLAMP, Worm Gear (2 required per assembly)
CLAMP Worm Gear 54-815504512
 

About Mercury Marine

OEM Part

54-815504512 - Clamp [ More info ]

Add to shopping cart $2.50
10+ in stock. Explain stock levels

#31 32-807406 HOSE (1 required per assembly)
HOSE-MOLDED 32-807406
32-807406

About Mercury Marine

OEM Part

32-807406 - Molded Hose [ More info ]

Add to shopping cart $29.33
Available to order: Usually ships within 8 days. Explain stock levels

#32 32-807989 HOSE (1 required per assembly)
32-807989 - HOSE              O NLA
32-807989

About Mercury Marine

OEM Part

32-807989 - HOSE O NLA [ More info ]
Unavailable
#33 32-808045 HOSE, Fuel Cooler to Transmission Oil Cooler (1 required per assembly)
HOSE-MOLDED 32-808045
32-808045

About Mercury Marine

OEM Part

32-808045 - Molded Hose [ More info ]

Add to shopping cart $54.10 $46.32
Available to order: Usually ships within 8 days. Explain stock levels

#34 32-861411 HOSE (1 required per assembly)
861411 - HOSE-WATER        O - Replaced by 32-8M2005023
 

This part has been superseded.

861411 - 861411 - HOSE-WATER O [ More info ]
Unavailable
Replaced by 32-8M2005023
HOSE-WATER 32-8M2005023
 

About Mercury Marine

OEM Part

32-8M2005023 - Water Hose , NLA [ More info ]

Add to shopping cart $57.00 $50.00
Available to order: Usually ships within 8 days. Explain stock levels

#35 32-807694 40 HOSE, (4.00 Inches) (1 required per assembly)
32-807694 40 - HOSE (4.00 Inches O - Replaced by 32-807694075
 

This part has been superseded.

32-807694 40 - 32-807694 40 - HOSE (4.00 Inches O [ More info ]
Unavailable
Replaced by 32-807694075
32-807694075 - HOSE              O - Replaced by 32-866331
 

This part has been superseded.

32-807694075 - 32-807694075 - HOSE O [ More info ]
Unavailable
Replaced by 32-866331
HOSE 32-866331
32-866331

About Mercury Marine

OEM Part

32-866331 - Hose [ More info ]

Add to shopping cart $11.70
Available to order: Usually ships within 8 days. Explain stock levels

#36 32-821415 HOSE, Seawater Pump To T-Fitting (1 required per assembly)
32897145 32-821415
32-821415

About Mercury Marine

OEM Part

32-821415 - HOSE [ More info ]

Add to shopping cart $25.03
1 in stock. Explain stock levels

HOSE 32-897145
32-897145

About Mercury Marine

OEM Part

32-897145 - Hose [ More info ]

Add to shopping cart $26.58
Available to order: Usually ships within 8 days. Explain stock levels

#38 22-861339 Y-FITTING (1 required per assembly)
22861339T 22-861339
 

About Mercury Marine

OEM Part

22-861339 - Fitting -y [ More info ]

Add to shopping cart $43.75
2 in stock. Explain stock levels

22-861339T - Y-FITTING         O NLA
 

About Mercury Marine

OEM Part

22-861339T - Y-FITTING O NLA [ More info ]
Unavailable
#39 32-42850 69 HOSE, (44.00 Inches Bulk) (1 required per assembly)
32-42850 69 - HOSE (44.00 Inche O - Replaced by 32-8M0062634
32-42850 69

This part has been superseded.

32-42850 69 - 32-42850 69 - HOSE (44.00 Inche O [ More info ]
Unavailable
Replaced by 32-8M0062634
HOSE-44 INCH 32-8M0062634
32-8M0062634

About Mercury Marine

OEM Part

32-8M0062634 - Transom TO Thermostat Housing Hose -44I [ More info ]

Add to shopping cart $36.00 $30.83
1 in stock. Explain stock levels

#41 22-861406 SOCKET (1 required per assembly)
SOCKET-QUICK CONN 22-861406
 

About Mercury Marine

OEM Part

22-861406 - Socket-quick Connector, NLA [ More info ]

Add to shopping cart $90.20 $77.24
Available to order: Usually ships within 8 days. Explain stock levels

#42 22-861405 FITTING (1 required per assembly)
22-861405 - FITTING           O - Replaced by 22-857175
 

This part has been superseded.

22-861405 - 22-861405 - FITTING O [ More info ]
Unavailable
Replaced by 22-857175
COUPLING INSERT 22-857175
22-857175

About Mercury Marine

OEM Part

22-857175 - Coupling [ More info ]

Add to shopping cart $67.40 $57.72
3 in stock. Explain stock levels

#43 22-861427 CAP (1 required per assembly)
861427 - CAP               O - Replaced by 19-858240
861427

This part has been superseded.

861427 - 861427 - CAP O [ More info ]
Unavailable
Replaced by 19-858240
CAP 19-858240
 

About Mercury Marine

OEM Part

19-858240 - Cap [ More info ]

Add to shopping cart $7.20
1 in stock. Explain stock levels

#44 22-861483 T-FITTING (1 required per assembly)
22-861483 - T-FITTING         O - Replaced by 22-861483T
 

This part has been superseded.

22-861483 - 22-861483 - T-FITTING O [ More info ]
Unavailable
Replaced by 22-861483T
22-861483T - T-FITTING W/DRAIN O - Replaced by -861505
 

This part has been superseded.

22-861483T - 22-861483T - T-FITTING W/DRAIN O [ More info ]
Unavailable
Replaced by -861505
DRAIN INSERT 861505
861505

About Mercury Marine

OEM Part

861505 - Drain Insert [ More info ]

Add to shopping cart $7.30
1 in stock. Explain stock levels

#45 22-806608A 1 PLUG KIT, (.500-13) Royal Blue (2 required per assembly)
22-806608A 1 - PLUG KIT (.500-13 O - Replaced by 22-806608A02
22-806608A 1

This part has been superseded.

22-806608A 1 - 22-806608A 1 - PLUG KIT (.500-13 O [ More info ]
Unavailable
Replaced by 22-806608A02
22-806608A02 - PLUG ASSEMBLY (.5  - Replaced by 22-8M0119211
22-806608A02

This part has been superseded.

22-806608A02 - 22-806608A02 - PLUG ASSEMBLY (.5 [ More info ]
Unavailable
Replaced by 22-8M0119211
DRAIN PLUG Note: must be ordered in multiples of 5 22-8M0119211
22-8M0119211

About Mercury Marine

OEM Part

22-8M0119211 - Drain Plug, Priced Individually, .5 inch x 13 [ More info ]

Add to shopping cart $7.50
6 in stock. Explain stock levels

DRAIN PLUG
18-4226

About Sierra Marine

OEM Match

18-4226 - Blue Drain Plug, 22-806608A1 [ More info ]

Add to shopping cart $3.99 $3.01
10+ in stock. Explain stock levels

PLUG KIT Note: must be ordered in multiples of 2   22806608Q01
22806608Q01

About Mercury Marine

OEM Part

22-806608Q01 - Plug Kit - Priced Individually [ More info ]

Add to shopping cart $7.20
Available to order: Usually ships within 8 days. Explain stock levels

#46 25-806609 QUAD RING (2 required per assembly)
2532509 25-806609
25-806609

About Mercury Marine

OEM Part

25-806609 - Quad Ring - Priced Individually [ More info ]

Add to shopping cart $1.00
10+ in stock. Explain stock levels

O RING Note: must be ordered in multiples of 10 25-32509
25-32509

About Mercury Marine

OEM Part

25-32509 - O-Ring - Priced Individually [ More info ]

Add to shopping cart $1.50
10+ in stock. Explain stock levels

O-Ring
18-7165

About Sierra Marine

OEM Match

18-7165-9 - O-Ring (PK5) , 0304174 [ More info ]

Add to shopping cart $7.68 $4.19
3 in stock. Explain stock levels

#NS 19-807992 3 COVER, Hose Clamp End (AR required per assembly)
198M6500037 19-807992  3
 

About Mercury Marine

OEM Part

19-807992 3 - Cover-.375 - Priced Individually [ More info ]

Add to shopping cart $0.53
10+ in stock. Explain stock levels

19-8M6500037 - COVER             O - Replaced by 19-8M0074364
 

This part has been superseded.

19-8M6500037 - 19-8M6500037 - COVER O [ More info ]
Unavailable
Replaced by 19-8M0074364
COVER-CLAMP Note: must be ordered in multiples of 20 19-8M0074364
 

About Mercury Marine

OEM Part

198M0074364 - Cover-Clamp - Priced Individually [ More info ]

Add to shopping cart $2.40
10+ in stock. Explain stock levels

#- 27-811572A94 GASKET SET, Overhaul (454) (1 required per assembly)
GASKET SET Overhaul 27-811572A94
27-811572A94

About Mercury Marine

OEM Part

27-811572A94 - Gasket Set [ More info ]

Add to shopping cart $1,395.71
Available to order: Usually ships within 8 days. Explain stock levels