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Parts for MerCruiser 377 Mag MPI Alpha / Bravo EC Thermostat & Housing, Closed Cooling

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 864398T 1 HOUSING ASSEMBLY, Thermostat (1 required per assembly) Mechanical Throttle and Shift
HOUSING ASSEMBLY 864398T 1 864398T 1
864398T 1OEM Part 864398T 1 - Thermostat Housing (more info) About Mercury Marine $341.67 $341.67 Add to shopping cart
Available to order:
Usually ships
within 8 days
#1 864398T04 HOUSING ASSEMBLY, Thermostat (1 required per assembly) Digital Throttle and Shift
HOUSING ASSEMBLY 864398T04 864398T04
864398T04OEM Part 864398T04 - Thermostat Housing (more info) About Mercury Marine $384.58 $384.58 Add to shopping cart
Available to order:
Usually ships
within 8 days
#2 27-53045 1 GASKET, Thermostat Housing (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
#3 22-32803 PLUG, Pipe (.375-18) Brass (2 required per assembly)
PLUG Pipe (.375-1 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 $3.99 $3.41 Add to shopping cart
Available to order:
Usually ships
within 8 days
#4 25-807134 1 SEAL, Thermostat (1 required per assembly)
SEAL 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
#5 10-40011151 SCREW, (M8 x 35) Stainless Steel (2 required per assembly)
SCREW (M8 x 35) S 10-40011151 10-40011151
10-40011151OEM Part 10-40011151 - Screw (more info) About Mercury Marine $3.30 $3.30 Add to shopping cart
1 in stock. Explain stock levels
#6 805218T SENSOR (1 required per assembly)
SENSOR ASSY-TEMP 805218T 805218T
805218TOEM Part 805218T - Temperature Sensor Assembly (more info) About Mercury Marine $32.83 $32.83 Add to shopping cart
Available to order:
Usually ships
within 8 days
Coolant Temp Sensor 18-7600
18-7600OEM Match 18-7600 - Sensor 805218T (more info) About Sierra Marine $29.99 $24.52 Add to shopping cart
5 in stock. Explain stock levels
#7 806490T SENDER, Temperature (1 required per assembly)
SENDER 806490T 806490T
806490TOEM Part 806490T - Water Temp Sender (more info) About Mercury Marine $27.92 $27.92 Add to shopping cart
Available to order:
Usually ships
within 8 days
Temperature Sender 18-5897
18-5897OEM Match 18-5897 - Sender, 97257A1 (more info)
Replaces OEM #3853787
About Sierra Marine $26.99 $20.86 Add to shopping cart
7 in stock. Explain stock levels
#7 49734 SENDER, Water Temperature (OPT required per assembly) Dual Station
SENDER ASSY 49734 49734
49734OEM Part 49734 - Sender Assembly (more info) About Mercury Marine $64.08 $64.08 Add to shopping cart
2 in stock. Explain stock levels
#8 13-26996 LOCKWASHER, (#10) Stainless Steel (1 required per assembly)
LOCKWASHER (#10) 13-26996  
13-26996OEM Part 13-26996 - LockWasher - Priced Individually (more info) About Mercury Marine $0.84 $0.84 Add to shopping cart
10+ in stock. Explain stock levels
#9 11-68219 NUT, (#10-32) Stainless Steel (1 required per assembly)
NUT (#10-32) Stai 11-68219  
11-68219OEM Part 11-68219 - Nut - Priced Individually (more info) About Mercury Marine $2.00 $2.00 Add to shopping cart
10+ in stock. Explain stock levels
#10 864493 THERMOSTAT, 77°C (170°F) (1 required per assembly)
THERMOSTAT 77 C ( 864493 864493
864493OEM Part 864493 - Thermostat (more info) About Mercury Marine $22.25 $22.25 Add to shopping cart
Available to order:
Usually ships
within 8 days
THERMOSTAT 18-43015
18-43015OEM Match 18-43015 - Thermostat 864493 (more info) About Sierra Marine $21.99 $18.19 Add to shopping cart
2 in stock. Explain stock levels
#11 807075A 1 COVER, Thermostat Housing (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
#12 22-818390 DRAIN COCK (1 required per assembly)
DRAIN COCK 22-818390  
22-818390OEM Part 22-818390 - Plug Assembly (more info) About Mercury Marine $17.30 $14.81 Add to shopping cart
Available to order:
Usually ships
within 8 days
#13 10-29198 SCREW AND LOCKWASHER, (.312-18 x .875), With Lockwasher (2 required per assembly)
SCREW AND LOCKWAS 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