TCKWP304ASF Timing Belt Kits For Subaru

The DUHUI Bearing TCKWP304ASF timing belt kit is a complete OE-replacement solution designed for Subaru 2.5L SOHC EJ25 engines. This timing belt kit with water pump synchronizes crankshaft and camshaft rotation while the integrated water pump maintains engine cooling system performance. Manufactured to match original equipment specifications, this timing component kit delivers reliable operation for compatible Subaru Forester and Impreza applications.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | |
| Part Number | TCKWP304ASF |
| Product Type | Timing Belt Kit with Water Pump |
| Application | Engine Timing System |
| Engine Compatibility | Subaru EJ25 (2.5L SOHC) |
| Number of Components | 6 |
| Number of Timing Belts | 1 |
| Number of Tensioners | 1 |
| Number of Idlers | 3 |
| Number of Water Pumps | 1 |
| Tensioner Type | Hydraulic |
| Belt Tooth Style | Modified Curvilinear (III) |
| Number of Belt Teeth | 277 |
| Belt Width | 30.00 mm (1.181 inch) |
| Belt Material | HSN, Fiberglass Cord |
| Instruction Sheet Number | 0098-1655 |
| Vehicle Application | Subaru 2.5L SOHC (EJ25) |
Important: All information on this page is for reference only. Please verify OE numbers, dimensions, and vehicle fitment against your original part before ordering. Contact us for fitment confirmation.
DH Code & OE Numbers & Reference Numbers
DH Code:
OE Numbers:
TCKWP304ASF, 19253937
Reference Numbers (Interchange):
Gates: TCKWP304ASF
ACDelco: TCKWP304ASF
Vehicle Fitment
SUBARU FORESTER: 2.5L H4 SOHC 16v 2009
SUBARU IMPREZA: 2.5L H4 SOHC 16v 2009
SUBARU LEGACY: 2.5L H4 SOHC 2009
SUBARU OUTBACK: 2.5L H4 SOHC 2009
Please verify OE number, dimensions and vehicle configuration before ordering.
Product Features
- Complete timing kit with water pump for Subaru 2.5L SOHC EJ25 applications. Matches OE specifications including 19253937.
- Includes timing belt, hydraulic tensioner, three idler pulleys, and water pump – all components required for a complete timing system service.
- Fiberglass cord belt construction provides high strength, excellent flex life, and resistance to elongation.
- Hydraulic tensioner maintains correct belt tension automatically throughout the service interval.
- Water pump is driven by the timing belt on these engines – replacing both components together is essential for long-term reliability.
Installation Notes
- Verify engine timing marks are aligned before removing the old timing belt.
- Always replace the water pump when replacing the timing belt on these SOHC EJ25 applications.
- Do not pull the pin on the hydraulic tensioner until the belt is properly installed and tensioned.
- Torque all fasteners to Subaru manufacturer specifications.
- Rotate the engine manually through two full revolutions after installation to verify timing alignment.
- Check for proper tensioner operation and coolant system fill before starting the engine.
About DUHUI Bearing
Manufactured by DUHUI Bearing – an automotive bearing supplier established in Zhejiang, China, in 2003. DUHUI produces timing belt kits to OE specifications. Contact us

