OE Quality
60-Day Returns

Gates CO35034 Engine Coolant Hose Flange
Reliable Engine Coolant Hose Flange for Lexus and Toyota Vehicles
The Gates Coolant Outlet CO35034 is a precision-engineered engine coolant hose flange designed to maintain optimal cooling system performance. Crafted from durable aluminum, this part is compatible with various Lexus and Toyota models, including the Avalon, Camry, ES300h, Highlander, NX450h+, RAV4, RAV4 Prime, Sienna, and Venza.
- Constructed from high-quality aluminum for corrosion resistance and durability
- Features three bolt holes for secure mounting
- Multiple outlet outside diameters: 0.31, 0.67, and 1.37 inches
- Outlet inside diameters of 0.22, 0.54, and 1.1 inches to fit specific hose sizes
- Part number CO35034 for accurate identification and replacement
About the Gates Coolant Outlet Product Line
The Gates Coolant Outlet line focuses on components that ensure efficient coolant flow and system integrity. This engine coolant hose flange is part of that line, designed to provide a reliable connection point for coolant hoses in the engine cooling system. Its aluminum construction supports long-term resistance to heat and corrosion, which is critical for maintaining proper engine temperature regulation.
Detailed Product Description
The CO35034 engine coolant hose flange is engineered to fit specific coolant hose sizes with multiple outlet diameters, ensuring compatibility with the cooling systems of select Lexus and Toyota models. The flange includes three bolt holes for secure attachment, providing a stable and leak-resistant connection. Its aluminum material offers strength and resistance to the harsh conditions within the engine bay, including exposure to coolant fluids and temperature fluctuations.
Common Applications and Issues Addressed
- Replacement of worn or damaged coolant hose flanges in Lexus Avalon and Toyota Camry cooling systems
- Resolving coolant leaks caused by cracked or corroded flange connections
- Maintaining proper coolant flow in hybrid models like the Lexus ES300h and NX450h+
- Supporting cooling system integrity in SUVs such as the Toyota Highlander and RAV4 Prime
- Ensuring reliable coolant outlet connections in minivans like the Toyota Sienna
Installation Notes and Tips
When installing the Gates CO35034 coolant hose flange, ensure the mating surfaces are clean and free of debris to prevent leaks. Use the three bolt holes to securely fasten the flange, applying appropriate torque specifications as per vehicle manufacturer guidelines. Verify hose fitment against the flange outlet diameters to ensure a proper seal. Although this part does not include a gasket, inspect the existing gasket or replace it if necessary to maintain a leak-free connection.
Quality Assurance and Warranty
Gates manufactures the CO35034 coolant hose flange to meet or exceed industry standards for durability and performance. While this part is not an exact OE replacement, it is engineered for reliable fit and function in compatible Lexus and Toyota models. Please refer to Gates' warranty policies for specific coverage details.
| Brand | Gates |
| Part Number | CO35034 |
| Position | Coolant Outlet |
| Material | Aluminum |
| Outlet Outside Diameter | .31 |
| Outlet Outside Diameter | .67 |
| Outlet Outside Diameter | 1.37 |
| Bolt Hole Quantity | 3 |
| Type | Coolant hose flange |
| Gasket Quantity | 0 |
| Outlet Inside Diameter | .22 |
| Outlet Inside Diameter | .54 |
| Outlet Inside Diameter | 1.1 |
| 9841 | 0 |
| 9848 | No |
| Contents | Coolant hose flange |
| OE Exact | No |
This part fits 25 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2023 | Lexus | NX450h+ | 2.5L | L4 | PLUG-IN HYBRID EV-GAS (PHEV) | N/A | Coolant Outlet |
| 2023 | Toyota | Highlander | 2.5L | L4 | FULL HYBRID EV-GAS (FHEV) | N/A | Coolant Outlet |
| 2022 | Lexus | ES300h | 2.5L | L4 | FULL HYBRID EV-GAS (FHEV) | N/A | Coolant Outlet |
| 2022 | Toyota | Avalon | 2.5L | L4 | FULL HYBRID EV-GAS (FHEV) | N/A | Coolant Outlet |
| 2022 | Toyota | Highlander | 2.5L | L4 | FULL HYBRID EV-GAS (FHEV) | N/A | Coolant Outlet |
| 2022 | Toyota | RAV4 | 2.5L | L4 | FULL HYBRID EV-GAS (FHEV) | N/A | Coolant Outlet |
| 2022 | Toyota | RAV4 Prime | 2.5L | L4 | PLUG-IN HYBRID EV-GAS (PHEV) | N/A | Coolant Outlet |
| 2021 | Lexus | ES300h | 2.5L | L4 | FULL HYBRID EV-GAS (FHEV) | N/A | Coolant Outlet |
| 2021 | Toyota | Avalon | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2021 | Toyota | Camry | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2021 | Toyota | Highlander | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2021 | Toyota | RAV4 | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2021 | Toyota | RAV4 Prime | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2021 | Toyota | Sienna | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2021 | Toyota | Venza | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2020 | Lexus | ES300h | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2020 | Toyota | Avalon | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2020 | Toyota | Camry | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2020 | Toyota | Highlander | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2020 | Toyota | RAV4 | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2019 | Lexus | ES300h | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2019 | Toyota | Avalon | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2019 | Toyota | Camry | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2019 | Toyota | RAV4 | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
| 2018 | Toyota | Camry | 2.5L | L4 | ELECTRIC/GAS | N/A | Coolant Outlet |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.