Home > All Products > Mercury Mariner Mercruiser Chrysler Force Quicksilver > Thermostat > Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
1/1
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP

Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP

SKU: MC-TH-59078

> 140℉/60℃

> Fit Engine: for MerCruiser MCM GM 2.5L 3.0L inline 4-cylinder and 6-cylinder engines 120HP, 140HP, 165HP models.

> Fit Part Number: fit Mercruiser 59078Q3 59078T3 59078T4 59078 59078A1, 59078B, 47590, fit Sierra 18-3650 18-3550 18-2831, fit GLM 13370 13020 31430, fit Mallory 9-43153, 9-43020, 9-60012.

> Includes: 1x Thermostat; 1x Gasket

> If you are unsure, please provide your engine serial number.

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  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
1/1
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
  • Boat Engine 59078 59078Q3 59078T3 59078T4 18-3550 Thermostat for Mercury Mercruiser 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP
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SouthMarine Boat Engine 59078 59078Q3 Thermostat for Mercury Mercruiser,140℉/60℃ 59078T3 59078T4 for 2.5L 3.0L 4/6-cylinder 120HP 140HP 165HP Outboard Mariner, fit Sierra 18-3550

Description:

140℉/60℃

Fit Engine: for MerCruiser MCM GM 2.5L 3.0L inline 4-cylinder and 6-cylinder engines 120HP, 140HP, 165HP models.

Fit Part Number: fit Mercruiser 59078Q3 59078T3 59078T4 59078 59078A1, 59078B, 47590, fit Sierra 18-3650 18-3550 18-2831, fit GLM 13370 13020 31430, fit Mallory 9-43153, 9-43020, 9-60012.

Includes: 1x Thermostat; 1x Gasket

If you are unsure, please provide your engine serial number.

 

Application:

120 HP/2.5L140 HP/3.0L R/MR/ALPHA ONE - 140 GM 181 I/L4 1982-1986

120 ENGINE - 120 GM 153 I/L4 1972-1978

3.0L ALPHA ONE - 3.0L GM 181 I/L4

120 HP/2.5L140 HP/3.0L R/MR/ALPHA ONE - 120 GM 153 I/L4 1983-1986

140 ENGINE (4 CYLINDER) - 140 GM 181 I/L4 1968-1972

3.0L/LX ALPHA ONE - 3.0LX GM 181 I/L4 1996-1997

120 ENGINE - 120 GM 153 I/L4 1964-1972

165 ENGINE - 165 GM 250 I/L6 1979-1981

120 HP/2.5L140 HP/3.0L R/MR/ALPHA ONE - 3.0L GM 181 I/L4 1987-1989

120 HP/2.5L140 HP/3.0L R/MR/ALPHA ONE - 2.5L GM 153 I/L4 1987-1989

3.0L/LX ALPHA ONE - 3.0LX GM 181 I/L4 1990-1995

120 ENGINE - 120 GM 153 I/L4 1979-1982

3.0L/LX ALPHA ONE - 3.0L GM 181 I/L4 1 1998

140 ENGINE - 140 GM 181 I/L4 1972-1978

140 ENGINE - 140 GM 181 I/L4 1979-1982

165 ENGINE - 165 GM 250 I/L6 1970-1978

......

Air Transport

We only ship from USA warehouse to USA address, but we can ship from China warehouse to the worldwide, covering North and South America, Europe, Asia, Africa, Oceania.
We employ the services of major, trusted international carriers Yanwen/FedEx/UPS/DHL/EMS/ePacket/Amazon Logistics etc to ensure your package arrives at your place safely and securely.
if your country is not included in the list, please kindly contact us.


Transport by Sea

Sea transportation is applicable for large orders(100kg+). Please contact us for details.

Order Tracking

The tracking number will be posted into every customer's account page after the goods is ready to be shipped out.
You will be notified by your registered E-mail.
Please enter the shipping company's official website to check the shipping status of your package.
Yanwen/FedEx/UPS/DHL/EMS/ePacket/Amazon Logistics 
If you have any other concerns, please contact us.


Tax

If it comes to tariffs, all tax fees are the sole responsibility of the recipient. All prices displayed on the site are exclusive of taxes.

Delivery Time

Handing time: less than 3 business days.
Ship from USA to USA: 1-7 business days.
Transport by air: 7-35 business days according to delivery area
Transport by sea: No less than 35 business days.
If you have any questions about the delivery time, please contact us.
All of our items come with a 6 month warranty.  This warranty covers any unit defects that are causing the item not to work properly.  It does not cover any damage that occurred to the item while in the customers possession. if you have any question, please feel free to contact us.
We offer a 30 day return policy on all parts and accessories providing they are returned to us in new condition and are unused. If the item received damage during shipping please note with the shipping company and contact us to resolve the problem. If you simply wish to return the item because you don't need it or it was the wrong one. Please include your name and order number (or the invoice if you still have it) in the box with the part. Refunds are generally processed within 1 week of receiving the return (shipping cost is not refundable).  Buyer is responsible for shipping cost back to us. you can ship it back for a full refund of the items cost after we receive it.

As we have multiple return warehouses, please contact us for the return address before sending it out, thanks a lot.
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