OE Quality
60-Day Returns

Gates CO34848 Engine Coolant Water Outlet
Overview of Gates Coolant Outlet CO34848
The Gates Coolant Outlet CO34848 is a precision-engineered engine coolant water outlet designed for select Lexus and Toyota models. Manufactured from durable aluminum, this thermostat housing component ensures reliable coolant flow and system integrity for vehicles such as the Toyota Camry, Avalon, and Lexus RX350.
- Constructed from high-quality aluminum for corrosion resistance and durability
- Designed as a thermostat housing coolant outlet with no by-pass holes
- Features dual outlet inside diameters of 0.642 and 0.983 inches
- Dual outlet outside diameters measure 0.747 and 1.27 inches respectively
- Equipped with three bolt holes for secure mounting
- Does not include gaskets or seals, allowing for custom installation
Detailed Product Description
The Gates Coolant Outlet CO34848 belongs to the Coolant Outlet product line, which focuses on delivering reliable engine coolant water outlets and thermostat housings. This part is specifically engineered to maintain proper coolant flow and temperature regulation in compatible Lexus and Toyota vehicles. The aluminum construction provides strength and resistance to corrosion, essential for long-term engine cooling system performance. With three bolt holes, the outlet ensures a secure fit, while the dual outlet diameters accommodate specific hose connections. This part is not an exact OE replacement but is designed to meet or exceed performance requirements for models including the Toyota Highlander, RAV4, Sienna, and Lexus RX450h.
Compatible Vehicles and Applications
This coolant outlet is compatible with a range of Lexus and Toyota models, including:
- Toyota Avalon
- Toyota Camry
- Toyota ES350
- Toyota Highlander
- Toyota RAV4
- Toyota Sienna
- Toyota Venza
- Lexus RX350
- Lexus RX450h
Common Issues Addressed by This Coolant Outlet
- Leaking or cracked thermostat housing causing coolant loss
- Overheating due to improper coolant flow
- Corrosion damage in original aluminum outlets
- Loose or damaged mounting points affecting coolant system integrity
- Replacement of worn or damaged engine coolant water outlets
Installation Notes and Tips
- Ensure the engine is cool before beginning installation to avoid burns
- Inspect and replace any gaskets or seals as this part does not include them
- Use proper torque specifications for the three bolt holes to prevent leaks
- Verify outlet diameters match existing hoses for a secure fit
- Check coolant levels and system pressure after installation
Quality Assurance and Warranty
Gates is a recognized manufacturer of automotive cooling system components, and the Coolant Outlet CO34848 is built to meet industry standards for durability and performance. While this part is not an exact OE replacement, it is engineered to provide reliable service in compatible Lexus and Toyota vehicles. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.
| Brand | Gates |
| Part Number | CO34848 |
| Position | Coolant Outlet |
| 0 | |
| No | |
| Bolt Hole Quantity | 3 |
| By-Pass Holes | No |
| Contents | Coolant Outlet |
| Gasket Quantity | 0 |
| Material | Aluminum |
| Number of Bolt Holes | 3 |
| Number of Gaskets | 0 |
| Number of Seals | 0 |
| OE Exact | No |
| Outlet Inside Diameter | .642 |
| Outlet Inside Diameter | .983 |
| Outlet Inside Diameter 1 (in) | .983 |
| Outlet Inside Diameter 2 (in) | .642 |
| Outlet Outside Diameter | .747 |
| Outlet Outside Diameter | 1.27 |
| Outlet Outside Diameter 1 (in) | 1.27 |
| Outlet Outside Diameter 2 (in) | .747 |
| Type | Coolant Outlet |
| Type | Thermostat Housing |
This part fits 91 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2018 | Lexus | ES350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2018 | Toyota | Avalon | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2017 | Lexus | ES350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2017 | Toyota | Avalon | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2017 | Toyota | Camry | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2016 | Lexus | ES350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2016 | Toyota | Avalon | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2016 | Toyota | Camry | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2016 | Toyota | Highlander | 3.5L | V6 | ELECTRIC/GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2016 | Toyota | Highlander | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2016 | Toyota | Sienna | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2015 | Lexus | ES350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2015 | Lexus | RX350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2015 | Lexus | RX450h | 3.5L | V6 | ELECTRIC/GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2015 | Toyota | Avalon | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2015 | Toyota | Camry | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2015 | Toyota | Highlander | 3.5L | V6 | ELECTRIC/GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2015 | Toyota | Highlander | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2015 | Toyota | Sienna | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2015 | Toyota | Venza | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2014 | Lexus | ES350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2014 | Lexus | RX350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2014 | Lexus | RX450h | 3.5L | V6 | ELECTRIC/GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2014 | Toyota | Avalon | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2014 | Toyota | Camry | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2014 | Toyota | Highlander | 3.5L | V6 | ELECTRIC/GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2014 | Toyota | Highlander | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2014 | Toyota | Sienna | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2014 | Toyota | Venza | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2013 | Lexus | ES350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2013 | Lexus | RX350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2013 | Lexus | RX450h | 3.5L | V6 | ELECTRIC/GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2013 | Toyota | Avalon | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2013 | Toyota | Camry | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2013 | Toyota | Highlander | 3.5L | V6 | ELECTRIC/GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2013 | Toyota | Highlander | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2013 | Toyota | Sienna | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2013 | Toyota | Venza | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2012 | Lexus | ES350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2012 | Lexus | RX350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2012 | Lexus | RX450h | 3.5L | V6 | ELECTRIC/GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2012 | Toyota | Avalon | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2012 | Toyota | Camry | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2012 | Toyota | Highlander | 3.5L | V6 | ELECTRIC/GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2012 | Toyota | Highlander | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2012 | Toyota | RAV4 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2012 | Toyota | Sienna | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2012 | Toyota | Venza | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2011 | Lexus | ES350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2011 | Lexus | RX350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2011 | Lexus | RX450h | 3.5L | V6 | ELECTRIC/GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2011 | Toyota | Avalon | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2011 | Toyota | Camry | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2011 | Toyota | Highlander | 3.5L | V6 | ELECTRIC/GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2011 | Toyota | Highlander | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2011 | Toyota | RAV4 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2011 | Toyota | Sienna | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2011 | Toyota | Venza | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2010 | Lexus | ES350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2010 | Lexus | RX350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2010 | Lexus | RX450h | 3.5L | V6 | ELECTRIC/GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2010 | Toyota | Avalon | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2010 | Toyota | Camry | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2010 | Toyota | Highlander | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2010 | Toyota | RAV4 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2010 | Toyota | Sienna | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2010 | Toyota | Venza | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2009 | Lexus | ES350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2009 | Lexus | RX350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2009 | Toyota | Avalon | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2009 | Toyota | Camry | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2009 | Toyota | Highlander | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2009 | Toyota | RAV4 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2009 | Toyota | Sienna | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2009 | Toyota | Venza | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2008 | Lexus | ES350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2008 | Lexus | RX350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2008 | Toyota | Avalon | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2008 | Toyota | Camry | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2008 | Toyota | Highlander | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2008 | Toyota | RAV4 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2008 | Toyota | Sienna | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2007 | Lexus | ES350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2007 | Lexus | RX350 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2007 | Toyota | Avalon | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2007 | Toyota | Camry | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2007 | Toyota | RAV4 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2007 | Toyota | Sienna | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2006 | Toyota | Avalon | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2006 | Toyota | RAV4 | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; Coolant Outlet |
| 2005 | Toyota | Avalon | 3.5L | V6 | GAS | N/A | Engine Coolant Water Outlet - Thermostat Housing; 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.