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Gates 34781 Engine Coolant Thermostat
| Brand | Gates 34781 |
|---|---|
| 0 | |
| Bolt Hole Quantity | 0 |
| Check Valve | No |
| Electric | Yes |
| Electric | Yes |
| Jiggle Pin Weep Hole | No |
| Jiggle Pin/Check Valve | No |
| Number of Bolt Holes | 0 |
| Number of Jiggle Pins/Check Valves | 0 |
| Number of Seals | 0 |
| OE Comparison Rating | OE Exact |
| OE Exact | Yes |
| Outlet Outside Diameter | .866 |
| Outlet Outside Diameter | 1.023 |
| Outlet Outside Diameter | 1.515 |
| Outlet Outside Diameter | 1.614 |
| Outlet Outside Diameter 1 (in) | 1.614 |
| Outlet Outside Diameter 2 (in) | 1.515 |
| Outlet Outside Diameter 3 (in) | .866 |
| Outlet Outside Diameter 4 (in) | 1.023 |
| Start to Open Temperature | 103 |
| Start to Open Temperature | 217 |
| Temperature (C) | 103 |
| Type | Integrated Housing Thermostat |
| Product line | Integrated Housing Thermostat |
| Fits | BMW · 39 vehicles |
OE exact replacement. Integrated housing thermostat for accurate temperature control.
Electric operation. Supports efficient engine temperature regulation.
Gates engineering. Aftermarket thermostat solution backed by R&D focus.
Cross-references Dorman - OE Solutions 902-5173, Four Seasons 58283 and Gates 34781 for the same application. See all 10.
Integrated Thermostat Housing for BMW Cooling Control
Gates 34781 is an integrated housing thermostat built for precise engine temperature regulation in select BMW applications. It is an OE Exact replacement that supports stable coolant flow and consistent operating temperature for vehicles equipped with an integrated thermostat housing design.
Fits 2011-2016 BMW 535i, N/A; Fits 2011-2016 BMW 535i GT, N/A; Fits 2011-2016 BMW 535i GT xDrive, N/A; Fits 2011-2016 BMW 535i xDrive, N/A; Fits 2012-2014 BMW ActiveHybrid 5, N/A; Fits 2015 BMW 640i, N/A; Fits 2015 BMW 640i Gran Coupe, N/A; Fits 2015 BMW 640i xDrive, N/A; Fits 2015 BMW 640i xDrive Gran Coupe, N/A; Fits 2014 BMW 640i, N/A; Fits 2014 BMW 640i Gran Coupe, N/A; Fits 2014 BMW 640i xDrive, N/A; Fits 2014 BMW 640i xDrive Gran Coupe, N/A; Fits 2013-2014 BMW 740i, N/A.
- Integrated housing thermostat for modern BMW cooling systems
- OE Exact replacement rating for direct application matching
- Electric thermostat design
- Start-to-open temperature: 217°F / 103°C
- Outlet outside diameters: 1.614 in, 1.515 in, 1.023 in, and .866 in
- No jiggle pin weep hole, check valve, or bolt holes
Product Details and Fitment
This Gates Integrated Housing Thermostat line addresses the growing use of thermostat assemblies that combine the thermostat and housing into one unit. Gates 34781 is engineered to regulate coolant temperature accurately so the engine can reach and maintain its intended operating range. For BMW 535i, 640i, and 740i applications, this part number is a direct-fit cooling system service component that matches OE temperature requirements.
This part cross-references Dorman OE Solutions 902-5173 and Stant 49602 for the same application.
Common Cooling System Issues It Can Address
- Engine running hotter than normal due to thermostat control problems
- Temperature fluctuations during warm-up or steady driving
- Cooling system fault codes related to thermostat operation
- Delayed engine warm-up that affects drivability and efficiency
- Leak-prone service intervals on integrated thermostat housing assemblies
Installation Notes and Quality Assurance
Verify the outlet diameters and OE temperature specification before installation, especially on BMW 535i, 640i, and 740i models with integrated housing thermostat assemblies. Confirm electrical connector and housing configuration against the original unit, and inspect the cooling system for related wear before returning the vehicle to service.
Gates develops aftermarket thermostat solutions for integrated housing applications with OE-level fitment targets and temperature control requirements. Part number 34781 is listed as OE Exact for the specified BMW applications.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2016 | BMW | 535i | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2016 | BMW | 535i GT | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2016 | BMW | 535i GT xDrive | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2016 | BMW | 535i xDrive | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2016 | BMW | ActiveHybrid 5 | 3.0L | L6 | FULL HYBRID EV-GAS (FHEV) | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2015 | BMW | 535i | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2015 | BMW | 535i GT | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2015 | BMW | 535i GT xDrive | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2015 | BMW | 535i xDrive | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2015 | BMW | 640i | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Seal included; Integrated Housing Thermostat |
| 2015 | BMW | 640i Gran Coupe | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Seal included; Integrated Housing Thermostat |
| 2015 | BMW | 640i xDrive | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Seal included; Integrated Housing Thermostat |
| 2015 | BMW | 640i xDrive Gran Coupe | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Seal included; Integrated Housing Thermostat |
| 2014 | BMW | 535i | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2014 | BMW | 535i GT | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2014 | BMW | 535i GT xDrive | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2014 | BMW | 535i xDrive | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2014 | BMW | 640i | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2014 | BMW | 640i Gran Coupe | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2014 | BMW | 640i xDrive | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2014 | BMW | 640i xDrive Gran Coupe | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2014 | BMW | 740i | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2014 | BMW | ActiveHybrid 5 | 3.0L | L6 | ELECTRIC/GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2013 | BMW | 535i | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2013 | BMW | 535i | 4.4L | V8 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2013 | BMW | 535i GT | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2013 | BMW | 535i GT xDrive | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2013 | BMW | 535i xDrive | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2013 | BMW | 740i | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2013 | BMW | ActiveHybrid 5 | 3.0L | L6 | ELECTRIC/GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2012 | BMW | 535i | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2012 | BMW | 535i GT | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2012 | BMW | 535i GT xDrive | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2012 | BMW | 535i xDrive | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2012 | BMW | ActiveHybrid 5 | 3.0L | L6 | ELECTRIC/GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2011 | BMW | 535i | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2011 | BMW | 535i GT | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2011 | BMW | 535i GT xDrive | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
| 2011 | BMW | 535i xDrive | 3.0L | L6 | GAS | N/A | 217 Degree; OE Temperature; Integrated Housing Thermostat |
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