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Gates 34149 Engine Coolant Thermostat
| Brand | Gates 34149 |
|---|---|
| Material | Stainless steel, steel, copper |
| Sealing Flange Outside Diameter | 3.2 |
| Height Between Flanges | 1.46 |
| Design | Weir-stat |
| Type | Heavy-duty thermostat |
| Height | 3.22 |
| Gasket Quantity | 0 |
| Jiggle Pin Weep Hole | No |
| Seal Type | O-ring |
| Start to Open Temperature | 190 |
| Start to Open Temperature | 88 |
| Installation Tool Included | No |
| Flange Thickness | .16 |
| 9810 | 2.27 |
| 9841 | 1 |
| 9852 | 0 |
| 9907 | 1.6 |
| Design | Weir-stat |
| Flange Thickness (in) | .16 |
| Height from Flange (in) | 1.6 |
| Includes Installation Tool | No |
| Material | Stainless steel, steel, copper |
| Number of Gaskets | 0 |
| Number of Jiggle Pins/Check Valves | 0 |
| Number of Seals | 1 |
| Valve Diameter (in) | 2.27 |
| Fits | — |
Heavy-duty thermostat. Built to handle harsh underhood noise and vibration in demanding applications.
Weir-Stat design. Promotes steady coolant flow for consistent temperature control.
Stainless steel construction. Combines steel and copper for durable, corrosion-resistant performance.
Cross-references AP Exhaust 38009, Bosch 15009 and Four Seasons 15008 for the same application. See all 25.
Heavy-Duty Cooling Control
The Gates 34149 Heavy-Duty Thermostat is an engine coolant thermostat built for demanding truck, bus, tractor, and heavy equipment cooling systems. It uses a Weir-Stat design with stainless steel, steel, and copper construction, plus an O-ring seal for a controlled fit in heavy-duty cooling service.
For buyers searching for a heavy-duty thermostat for commercial diesel cooling repair, Gates 34149 offers a 190°F opening temperature and a design focused on resisting under-hood noise, vibration, and harshness. It is a direct-fit style service part for applications that require stable coolant flow control.
Key Features
- Gates Heavy-Duty Thermostat, part number 34149
- Weir-Stat design for heavy-duty cooling system service
- Start to open temperature: 190°F / 88°C
- Stainless steel, steel, and copper construction
- O-ring seal type for sealing at the housing interface
- No jiggle pin weep hole
- No installation tool included
Product Details
Gates 34149 is an engine coolant thermostat for heavy-duty cooling systems where consistent temperature regulation matters. The Green Stripe Heavy-Duty Thermostat line is built for commercial-duty environments, including truck, bus, tractor, and off-road equipment use. If you are replacing a thermostat in a diesel cooling system or servicing a heavy-duty thermostat housing, this part number 34149 is a practical OE-style service choice.
This part cross-references Bosch 15009 and Motorad 4061-80 for the same application.
What It Helps Address
- Engine running too cool or taking too long to reach operating temperature
- Temperature fluctuation caused by a worn thermostat
- Coolant flow control issues in heavy-duty cooling systems
- Thermostat replacement during cooling system maintenance
- Service needs on truck, bus, tractor, and heavy equipment applications
Installation Notes
Verify thermostat orientation, sealing surface condition, and housing cleanliness before installation. Match the 190°F opening specification and confirm the O-ring seats evenly in the housing. Use the correct coolant and bleed the system according to the vehicle service procedure after replacement. For fitment-based searches, this Gates 34149 thermostat is commonly sought for heavy-duty truck cooling repair and commercial diesel thermostat replacement.
Quality Assurance
Gates designs the Green Stripe Heavy-Duty Thermostat line for the vibration, noise, and harsh operating conditions found in commercial and off-road equipment service. The stainless steel, steel, and copper construction supports durable temperature control in demanding cooling systems.
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