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OEM Auto Thermostats

Shop OEM Thermostats Designed for Engine Temperature Regulation

Thermostats are cooling system components responsible for regulating engine operating temperature. By controlling the flow of coolant between the engine and radiator, the thermostat helps the engine warm up efficiently and maintain a stable temperature during operation. Over time, heat exposure and mechanical cycling can affect thermostat performance, which is why these parts are often replaced during cooling system service. At Bob Howard Parts Distribution Center, we offer OEM thermostats designed to meet manufacturer specifications.

Thermostat designs vary by engine type and cooling system layout. Opening temperature, housing design, and mounting configuration are engineered for specific applications. Selecting the correct thermostat helps ensure proper coolant flow and supports efficient engine operation.

OEM thermostats are manufactured to align with factory temperature ratings and fitment standards. Using application-specific thermostats helps reduce the risk of overheating, poor warm-up performance, or erratic temperature readings.

Before ordering a thermostat, confirm model year, engine size, and cooling system configuration. You can browse available thermostats to find options matched to your vehicle.

OEM thermostats support consistent engine temperature control and reliable cooling system performance.

12600172 - : Engine Coolant Thermostat Water Inlet Assembly for GM Image

Engine Coolant Thermostat Water Inlet Assembly

This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Original equipment parts...
$46.76
MSRP $80.63
Save $33.87
42% Off
55111017AB - : Engine Coolant Thermostat Package, Cylinder Block for Mopar Image

Engine Coolant Thermostat Package, Cylinder Block

Mopar 55111017AB
Includes 55111017aa thermostat and 04884572aa seal. See Catalog Note. Secondary. 203 Degrees Fahrenheit.
Backordered
90119A0127 - : Automatic Transmission Oil Cooler Thermostat Bolt for Toyota Image

Automatic Transmission Oil Cooler Thermostat Bolt

Toyota 90119-A0127
$1.78
MSRP $2.31
Save $0.53
22.9% Off
3297034030 - : Cooler Assembly,  Transmission Oil With THERMOSTAT for Toyota Image

Cooler Assembly, Transmission Oil With THERMOSTAT

Toyota 32970-34030
Fits Land Cruiser, Sequoia, Tundra 5.7L, with towing package, 2011-13. 5.7L, with towing package, 2011-12.
$217.91
MSRP $315.19
Save $97.28
30.9% Off
RG619 - : Motorcraft Engine Coolant Thermostat Housing Gasket for Ford Image

Motorcraft Engine Coolant Thermostat Housing Gasket

Ford RG-619
O-Ring. Outlet Flange. Housing to Cylinder Head. Thunderbird. 3.9L.
$7.56
MSRP $11.36
Save $3.80
33.5% Off
RG634 - : Motorcraft Engine Coolant Thermostat Housing Gasket for Ford Image

Motorcraft Engine Coolant Thermostat Housing Gasket

Ford RG-634
1.6L non turbo. Without turbo. Fiesta.
$15.47
MSRP $23.64
Save $8.17
34.6% Off
RG594 - : Motorcraft Engine Coolant Thermostat Housing Gasket for Ford Image

Motorcraft Engine Coolant Thermostat Housing Gasket

Ford RG-594
$15.47
MSRP $23.64
Save $8.17
34.6% Off
55492938 - : Engine Coolant Thermostat with Water Inlet for GM Image

Engine Coolant Thermostat with Water Inlet

Cascada. Helps retain the thermostat to monitor the flow of coolant through your vehicle's engine and radiator Manufactured to GM...
$63.22
MSRP $110.41
Save $47.19
42.7% Off
55507983 - : Engine Coolant Thermostat Housing Inlet Pipe for GM Image

Engine Coolant Thermostat Housing Inlet Pipe

This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$61.80
MSRP $88.81
Save $27.01
30.4% Off
12689039 - : Engine Coolant Thermostat and Housing Assembly for GM Image

Engine Coolant Thermostat and Housing Assembly

Repairs leaking thermostat housings
$85.71
MSRP $149.72
Save $64.01
42.8% Off
RT1256 - : Motorcraft Automatic Transmission Oil Cooler Thermostat for Ford Image

Motorcraft Automatic Transmission Oil Cooler Thermostat

Ford RT-1256
F250, f350, f450, f550. Charge Air Cooling. 2018-19. 6.7L, auxiliary. 6.7L, 6 speed.
$204.06
MSRP $325.45
Save $121.39
37.3% Off
11094211 - : M6x70 Engine Coolant Thermostat Housing Bolt for GM Image

M6x70 Engine Coolant Thermostat Housing Bolt

This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$6.35
MSRP $10.16
Save $3.81
37.5% Off

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