OE Quality
60-Day Returns

Gates CO34998 Engine Coolant Water Outlet
Reliable Engine Coolant Water Outlet for Buick and Chevrolet Vehicles
The Gates Coolant Outlet CO34998 is engineered to provide a durable and precise fit for select Buick, Chevrolet, GMC, and Saturn models. Designed with aluminum construction, this engine coolant water outlet ensures efficient heat dissipation and long-lasting performance in your vehicle's cooling system.
- Constructed from high-quality aluminum for durability and corrosion resistance
- Features an outlet outside diameter of 1.56 inches and inside diameter of 1.26 inches
- Includes two bolt holes for secure mounting
- Comes with integrated seals and two bolts for installation
- Compatible with Buick Acadia, Acadia Limited, Enclave, LaCrosse, Chevrolet Outlook, GMC Acadia, Saturn Rendezvous, and Traverse models
About the Gates Coolant Outlet Product Line
The Gates Coolant Outlet line focuses on delivering reliable engine coolant water outlets designed to meet or exceed OEM specifications. This product line emphasizes precision fit and material quality, such as aluminum construction, to maintain optimal coolant flow and engine temperature regulation. The CO34998 part is a part of this line, providing a dependable replacement option for various GM vehicles.
Product Details and Specifications
The Gates CO34998 engine coolant water outlet is crafted from aluminum, offering excellent resistance to corrosion and heat. It features an outlet outside diameter of 1.56 inches and an inside diameter of 1.26 inches, ensuring proper coolant flow. The outlet includes two bolt holes for secure attachment and comes with integrated seals and two bolts to facilitate installation. Although it is not an exact OE replacement, it is designed to fit multiple GM models accurately.
Common Applications and Issues Addressed
- Replacement of cracked or leaking coolant outlets in Buick Acadia and Enclave models
- Resolving coolant leaks causing engine overheating in Chevrolet Outlook and GMC Acadia vehicles
- Addressing coolant flow restrictions due to damaged or corroded outlets in Saturn Rendezvous and Traverse
- Preventing coolant contamination and maintaining system pressure
- Restoring proper engine temperature regulation for improved performance
Installation Notes and Tips
When installing the Gates Coolant Outlet CO34998, ensure the mating surfaces are clean and free of old gasket material. The integrated seals included with the outlet help provide a secure, leak-free fit. Use the two provided bolts to fasten the outlet securely, following manufacturer torque specifications. Verify compatibility with your specific Buick, Chevrolet, GMC, or Saturn model before installation.
Quality Assurance and Warranty
Gates manufactures the CO34998 coolant outlet with strict quality control standards to ensure durability and reliable performance. While this part is not an exact OE replacement, it meets high-quality material and fitment requirements. Please consult product documentation or contact Gates for warranty details related to this part.
| Brand | Gates |
| Part Number | CO34998 |
| Position | Coolant Outlet |
| Material | Aluminum |
| Outlet Outside Diameter | 1.56 |
| Bolt Hole Quantity | 2 |
| Type | Coolant outlet |
| Gasket Quantity | 0 |
| Outlet Inside Diameter | 1.26 |
| 9841 | 2 |
| 9848 | No |
| Contents | Coolant outlet, integrated seals, 2 bolts |
| OE Exact | No |
This part fits 40 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2017 | Buick | Enclave | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2017 | Chevrolet | Traverse | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2017 | GMC | Acadia Limited | 3.6L | V6 | GAS | N/A | Seal included; Coolant Outlet |
| 2016 | Buick | Enclave | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2016 | Chevrolet | Traverse | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2016 | GMC | Acadia | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2015 | Buick | Enclave | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2015 | Chevrolet | Traverse | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2015 | GMC | Acadia | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2014 | Buick | Enclave | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2014 | GMC | Acadia | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2013 | Buick | Enclave | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2013 | Chevrolet | Traverse | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2013 | GMC | Acadia | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2012 | Buick | Enclave | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2012 | Chevrolet | Traverse | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2012 | GMC | Acadia | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2011 | Buick | Enclave | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2011 | Chevrolet | Traverse | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2011 | GMC | Acadia | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2010 | Buick | Enclave | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2010 | Chevrolet | Traverse | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2010 | GMC | Acadia | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2010 | Saturn | Outlook | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2009 | Buick | Enclave | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2009 | Chevrolet | Traverse | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2009 | GMC | Acadia | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2009 | Saturn | Outlook | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2008 | Buick | Enclave | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2008 | Buick | LaCrosse | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2008 | GMC | Acadia | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2008 | Saturn | Outlook | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2007 | Buick | LaCrosse | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2007 | GMC | Acadia | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2007 | Saturn | Outlook | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2006 | Buick | LaCrosse | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2006 | Buick | Rendezvous | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2005 | Buick | LaCrosse | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2005 | Buick | Rendezvous | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; Coolant Outlet |
| 2004 | Buick | Rendezvous | 3.6L | V6 | GAS | N/A | Engine Coolant Hose Flange comes with seal included; 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.