OE Quality
60-Day Returns

Sunsong 5801021 Automatic Transmission Oil Cooler Hose Assembly - Transmission to Radiator (Upper)
Reliable Automatic Transmission Oil Cooler Hose Assembly
The Sunsong 5801021 automatic transmission oil cooler hose assembly is designed to provide a secure and efficient connection for your vehicle's transmission cooling system. Engineered with durable steel and rubber materials, this 43-inch hose assembly ensures reliable performance for Chevrolet and GMC heavy-duty trucks.
- Length: 43 inches (1092 mm) for optimal fitment
- End fittings: Quick connect on both ends for easy installation
- Durable construction combining steel and rubber hose materials
- Compatible with Chevrolet Silverado 2500 HD, Silverado 3500, GMC Sierra 2500 HD, and Sierra 3500 models
- Part number 5801021 for precise identification and replacement
Durable Construction and Design Details
This automatic transmission oil cooler hose assembly features a hybrid design using steel and rubber materials to balance flexibility and strength. The steel sections provide resistance to pressure and heat, while the rubber portions allow for vibration absorption and ease of routing within the engine bay. Both ends are equipped with quick connect fittings, simplifying the replacement process and ensuring a secure, leak-free connection. Measuring 43 inches in length, this hose assembly is tailored to fit heavy-duty Chevrolet and GMC trucks, including the Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, and Sierra 3500 models.
Compatible Vehicles and Applications
This Sunsong hose assembly is specifically compatible with the following vehicles:
- Chevrolet Silverado 2500 HD
- Chevrolet Silverado 3500
- GMC Sierra 2500 HD
- GMC Sierra 3500
It is designed to maintain proper transmission fluid cooling, which is critical for preventing overheating and ensuring smooth transmission operation in these heavy-duty trucks.
Common Issues Addressed by This Hose Assembly
- Transmission fluid leaks due to worn or damaged hoses
- Overheating caused by inefficient transmission fluid cooling
- Reduced transmission performance from compromised fluid flow
- Vibration and hose fatigue from inferior materials
- Difficulty in installation with non-quick connect fittings
Installation Notes and Tips
When installing the Sunsong 5801021 hose assembly, ensure both quick connect fittings are securely engaged to prevent leaks. Inspect the transmission cooler and surrounding components for any signs of wear or damage before installation. The 43-inch length allows for proper routing without excessive bending or kinking. It is recommended to replace any worn clamps or seals during installation to maintain system integrity.
Quality Assurance and Warranty
Sunsong manufactures this automatic transmission oil cooler hose assembly to meet or exceed OEM specifications for durability and fitment. While specific warranty details are not provided, Sunsong products typically undergo rigorous quality control to ensure reliable performance in demanding automotive applications.
| Brand | Sunsong |
| Part Number | 5801021 |
| End 1 Fitting Type | Quick connect |
| End 2 Fitting Type | Quick connect |
| Hose Material 1 | Steel |
| Hose Material 2 | Rubber |
| Length (in) | 43 |
| Length (mm) | 1092 |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2002 | Chevrolet | Silverado 2500 HD | Transmission to Radiator (Upper) | |
| 2002 | Chevrolet | Silverado 3500 | Transmission to Radiator (Upper) | |
| 2002 | GMC | Sierra 2500 HD | Transmission to Radiator (Upper) | |
| 2002 | GMC | Sierra 3500 | Transmission to Radiator (Upper) | |
| 2001 | Chevrolet | Silverado 2500 HD | Transmission to Radiator (Upper) | |
| 2001 | Chevrolet | Silverado 3500 | Transmission to Radiator (Upper) | |
| 2001 | GMC | Sierra 2500 HD | Transmission to Radiator (Upper) | |
| 2001 | GMC | Sierra 3500 | Transmission to Radiator (Upper) |
* 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.