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Genuine Mazda 626 Thermostat

Engine Coolant Thermostat
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3 Thermostats found

  • Mazda 626 Thermostat - 8ABB-15-171-9U
    Diagram for Mazda 626 Thermostat - 8ABB-15-171-9U
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    Mazda 626 Thermostat Part Number: 8ABB-15-171-9U

    $20.83 MSRP: $27.77
    You Save: $6.94 (25%)
    Ships in 1-2 Business Days
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    Product Specifications
    • Other Name: Thermostat Set
    • Replaces: 8ABB-15-171
    • Warranty: This genuine part is guaranteed by Mazda's factory warranty.
    Fits the following Vehicles:
    • 1984-1988 Mazda 626 | DX, GT, LX, Turbo, Turbo 4WS | 4 Cyl 2.0 L GAS, 4 Cyl 2.2 L GAS
  • Mazda 626 Thermostat - KL01-15-171A-9U
    Diagram for Mazda 626 Thermostat - KL01-15-171A-9U
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    Mazda 626 Thermostat Part Number: KL01-15-171A-9U

    $25.61 MSRP: $34.16
    You Save: $8.55 (26%)
    Ships in 1-2 Business Days
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    Product Specifications
    • Other Name: THERMOSTAT (W/GASKET)
    • Replaces: 8AK2-15-171, 8AGX-15-171, FS05-15-171, KL01-15-171, KL01-15-171A
    • Warranty: This genuine part is guaranteed by Mazda's factory warranty.
    Fits the following Vehicles:
    • 1993-2002 Mazda 626 | DX, ES, LX | 4 Cyl 2.0 L GAS, 6 Cyl 2.5 L GAS
  • Mazda 626 Thermostat - 8AK1-15-171-9U
    Diagram for Mazda 626 Thermostat - 8AK1-15-171-9U
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    Mazda 626 Thermostat Part Number: 8AK1-15-171-9U

    $22.70 MSRP: $30.27
    You Save: $7.57 (26%)
    Ships in 1-2 Business Days
    ADD TO CART
    Product Specifications
    • Other Name: THERMOSTAT (W/O GASKET)
    • Warranty: This genuine part is guaranteed by Mazda's factory warranty.
    Fits the following Vehicles:
    • 1989-1992 Mazda 626 | DX, GT, LE, LX, Turbo | 4 Cyl 2.2 L GAS

Mazda 626 Thermostat

The Mazda 626 Thermostat is placed in the middle of the cooling system, which ensures that the engine reaches and maintains its highly efficient temperature range in a short time to drive smoothly and remain reliable over time. The device uses a simple loop, blocking the flow of coolant when the block is cold and then opening the block when heat expands the internal wax pellet, causing the engine passages to return to their usual temperature without electronic assistance. Older models of the early 1980s applied a more rugged type of bimetallic strip, which flexes when hot to open the valve, but newer 626 models have made the switch to a wax pellet type, which responds more quickly and provides more accurate control, reducing the time to warm up as well as limiting emissions. Despite both styles accomplishing the identical basic job, the wax system offers less rocking, fewer parts, and more vibration resistance, thus being the standard in the current line-up. During its manufacturing, Mazda adjusted the opening temperatures to the changing fuel injection needs, hence replacing the part with the appropriate rating has remained essential to avoid overheating or slow heater performance. The Thermostat is also important at the beginning of winter as it maintains coolant in the block until the required amount of heat is created and cabin heaters are activated earlier. The fact that a stuck-open or stuck-closed Thermostat might translate into low mileage, deformed heads, or unexpected power outages means regular checks will ensure that Mazda drivers maintain performance and enjoy every mile their Mazda sedan offers them.

Looking for Thermostat with proven quality? Choose OEM Thermostat. Mazda designs and builds them to strict factory specs. Every piece goes through rigorous quality checks. You'll get parts that fit right and work like new. Shop our huge inventory of OEM Mazda 626 parts. Enjoy the highly competitive prices online. Our site is your one-stop shop. Each genuine 626 part includes a manufacturer's warranty. Buy with confidence. Our return policy is simple and hassle-free. In a rush? Choose expedited delivery at checkout. You'll love the streamlined experience from search to checkout to receiving your order.

Mazda 626 Thermostat Parts and Q&A

  • Q: What is the best way to check the operation of a thermostat on Mazda 626?
    A:
    The easiest method to test the thermostat is to have the thermostat out of the engine. Most of the times, when the thermostat is questionable, then it is more cost effective to simply purchase and fit a new one since they are not that expensive. The first thing is to withdraw the thermostat and check whether it has excess corrosion and damage. In case either of the following conditions are observed, replace it with a new one.
  • Q: How to replace a thermostat on Mazda 626?
    A:
    Unplug the cable, which was not earlier removed, on the negative battery terminal. Take out the distributor to get to the housing of the thermostat. To drain the cooling system, loosen the Radiator cap and open the petcock at the bottom of the radiator and drain the cooling system until the level goes below the thermostat, then close the petcock when the system is adequately cooled. Disconnect the upper radiator hose and fan thermo switch connector and discharge the upper part of the radiator hose into the water outlet. Take out the two housing nuts and then detach the housing to the engine with a rubber mallet in case the housing gasket is sealed. Remove thermostat in the thermostat housing and prior to the installation of the new thermostat, wipe the gasket around surfaces around the water outlet and thermostat housing. Place a thin layer of sealant on both sides of the new gasket, make sure the thermostat goes in the housing, and then install the gasket (printed side towards the thermostat) and the water outlet and loosen the bolts to the recommended torque. Attach the upper radiator hose and clamp the hose firmly making sure that the arrow on the hose fits in the housing tab. Connect the plug of the thermo switch to the connector, fit the distributor and fill the cooling system with the right antifreeze/water mix. Reconnect the battery cable and turn on the engine and then run it with the radiator cap off until the upper radiator hose becomes hot and the thermostat is open. As the engine idles, pour in coolant to the radiator up to the bottom of the filler neck and then put in the radiator cap.

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