SKU: 24999-AF001 | UPC: 4957266600535
HKS 02-08 WRX / 04-08 STi EJ20/25 Upgraded Timing Belt
The HKS 24999-AF001 timing belt serves as a direct replacement for 2002-2008 Subaru WRX and 2004-2008 STI models equipped with EJ20 or EJ25 engines. Constructed with aramid fiber reinforcement it withstands high engine speeds and temperatures common in tuned setups. This design delivers consistent timing accuracy and reduces risk of failure during demanding drives.
Key Features
- Aramid Fiber Core: Delivers three times the tensile strength of standard rubber belts to handle boosted power levels without stretching or snapping.
- Heat Resistance: Rated to 120 degrees Celsius to maintain integrity in hot engine bays during track or rally use.
- Oil and Coolant Resistance: Special rubber compound repels contaminants ensuring long-term performance even in harsh conditions.
- Extended Service Life: Lasts up to 100,000 km with proper maintenance far outpacing OEM intervals for fewer replacements.
- Direct OEM Fitment: Matches factory specifications for easy installation on EJ20T and EJ25T engines without modifications.
Product Notes
- Replace water pump tensioner and idlers simultaneously for complete timing service.
- Inspect belt condition every 30,000 miles or annually in high-performance applications.
- Arrives in protective HKS packaging to prevent damage during transit.
Installation Notes
- Professional installation recommended.
- Requires engine at TDC and camshaft locking tools for STI models.
- Uses existing OEM tensioner hardware and mounting points.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2007 | Subaru | Impreza | WRX |
| 2004-2007 | Subaru | Impreza | WRX STI |
| 2008 | Subaru | Impreza | WRX STI |
| 2008 | Subaru | Impreza | WRX |
Why Choose HKS?
- Established leader in JDM performance parts since 1973 with global racing heritage.
- Manufactured with premium materials tested in endurance competitions.
- Engineered in Japan for exact tolerances and dependable operation.
Frequently Asked Questions
- Q: Will this belt fit my 2006 WRX STI EJ257?
A: Yes it directly replaces the OEM belt on all EJ257 STI engines from 2004-2008 with no alterations needed. - Q: What materials are used in construction?
A: High-modulus rubber reinforced by aramid fibers provides strength heat resistance and protection against oil exposure. - Q: What is the recommended service interval?
A: HKS suggests replacement every 60,000 miles or 5 years whichever comes first in performance applications.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Original HKS box 9 x 5 x 1.5 inches
- Weight: 0.75 lbs
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