OE Quality
60-Day Returns

Gates 90K-38258A Serpentine Belt Drive Component Kit
Overview of Gates Accessory Belt Drive Kit 90K-38258A
The Gates Accessory Belt Drive Kit 90K-38258A is designed specifically for Chevrolet Express 3500 and GMC Savana 3500 models. This serpentine belt drive component kit includes a belt, tensioner, and idler pulley engineered to meet precise fitment and performance requirements.
- Includes belt, tensioner assembly (part number 38258), and idler pulley (part number 38001)
- Belt outside circumference: 102.09 inches (2593 mm)
- Belt top width: 0.807 inches (20 mm)
- Compatible with Chevrolet Express 3500 and GMC Savana 3500
- Part number 90K-38258A for easy identification and ordering
About the Gates Accessory Belt Drive Kit Product Line
The Gates Accessory Belt Drive Kit product line focuses on providing complete serpentine belt drive system components for reliable accessory drive performance. This kit combines the belt, tensioner, and idler pulley to ensure proper tension and alignment, reducing wear and maintaining optimal engine accessory function. The 90K-38258A kit is tailored to the specific dimensions and requirements of the Chevrolet Express 3500 and GMC Savana 3500, ensuring compatibility and ease of installation.
Detailed Product Description
This serpentine belt drive component kit features a belt with an outside circumference of 102.09 inches (2593 mm) and a top width of 0.807 inches (20 mm), designed to fit the accessory drive system of the Chevrolet Express 3500 and GMC Savana 3500. The included tensioner assembly (part number 38258) and idler pulley (part number 38001) work together to maintain proper belt tension and routing, which is critical for the efficient operation of engine accessories such as the alternator, power steering pump, and air conditioning compressor. The belt part number K061015 is included to match the exact specifications required for these vehicle models.
Common Applications and Issues Addressed
- Replacement of worn or cracked serpentine belts on Chevrolet Express 3500 and GMC Savana 3500
- Resolving belt slippage or squealing noises due to tensioner or idler pulley wear
- Restoring proper accessory drive function to prevent engine accessory failure
- Addressing belt misalignment caused by faulty tensioner or idler components
- Preventing premature belt wear by installing a complete drive kit
Installation Notes and Tips
- Ensure vehicle compatibility with Chevrolet Express 3500 or GMC Savana 3500 before installation
- Inspect all pulleys and accessory components for wear prior to installation
- Use proper tools to relieve tension on the old belt and install the new tensioner assembly carefully
- Verify belt routing matches factory specifications to avoid misalignment
- Double-check belt tension after installation to ensure optimal performance
Quality Assurance and Warranty
Gates manufactures the Accessory Belt Drive Kit 90K-38258A to meet strict quality standards for durability and fitment. Each component is engineered to OEM specifications to ensure reliable operation in Chevrolet Express 3500 and GMC Savana 3500 vehicles. While specific warranty details should be confirmed with the supplier, Gates typically offers coverage against defects in materials and workmanship for their belt drive kits.
| Brand | Gates |
| Part Number | 90K-38258A |
| Position | Accessory Belt Drive Kit |
| Belt 1 Outside Circumference (in) | 102.09 |
| Belt 1 Outside Circumference (mm) | 2593 |
| Belt 1 Part Number | K061015 |
| Belt Top Width | .807 |
| Belt Top Width | 20 |
| Contents | Belt, Tensioner, Idler |
| Idler Pulley 1 Part Number | 38001 |
| Outside Circumference | 102.09 |
| Outside Circumference | 2593 |
| Tensioner Assembly Part Number | 38258 |
This part fits 4 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2002 | Chevrolet | Express 3500 | 8.1L | V8 | GAS | N/A | {K061015, 38258, 38001}; W/105A. Alt.; W/A.C.; Accessory Belt Drive Kit |
| 2002 | GMC | Savana 3500 | 8.1L | V8 | GAS | N/A | {K061015, 38258, 38001}; W/105A. Alt.; W/A.C.; Accessory Belt Drive Kit |
| 2001 | Chevrolet | Express 3500 | 8.1L | V8 | GAS | N/A | {K061015, 38258, 38001}; W/105A. Alt.; W/A.C.; Accessory Belt Drive Kit |
| 2001 | GMC | Savana 3500 | 8.1L | V8 | GAS | N/A | {K061015, 38258, 38001}; W/105A. Alt.; W/A.C.; Accessory Belt Drive Kit |
* 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.