Click to zoom in
SKU: 24996-AK009 | UPC: 4957266600207
HKS FINE TUNE V-BELT/4PK925 for 2004-2021 Subaru Impreza WRX STI Forester XT Legacy GT
The HKS Fine Tune V-Belt 4PK925 is a precision-engineered accessory drive belt designed for Subaru turbo models. It fits 2004-2021 Impreza WRX STI Forester XT and Legacy GT with EJ25 engines. This 925mm 4-rib belt uses advanced rubber for superior grip reduced slippage and consistent power transfer to alternator power steering and A/C.
Key Features
- High-Friction Compound: Special rubber formulation grips pulleys tightly to prevent slip under high RPM and load for dependable accessory operation.
- Low Elongation Design: Maintains tension over time without stretching ensuring stable performance and longer service life.
- Heat-Resistant Construction: Withstands engine bay temperatures up to 120°C to avoid degradation during track or spirited driving.
- Exact OEM Dimensions: 4PK925 size 925mm effective length matches factory specs for bolt-on installation with no modifications.
- Lightweight Build: Reduces rotational mass for quicker throttle response and improved engine efficiency.
Product Notes
- Direct replacement for stock belt enhances drive system reliability.
- Inspect pulleys for wear before installation to ensure optimal performance.
- Stored in protective sleeve to prevent contamination during shipping.
Installation Notes
- Professional installation recommended.
- Use belt tension gauge to set proper deflection per Subaru service manual.
- Compatible with stock and HKS accessory pulleys no special hardware needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2007 | Subaru | Impreza | WRX STI |
| 2008-2014 | Subaru | Impreza | WRX |
| 2008-2021 | Subaru | Impreza | WRX STI |
| 2004-2012 | Subaru | Forester | XT |
| 2005-2009 | Subaru | Legacy | GT |
| 2005-2009 | Subaru | Outback | XT |
Why Choose HKS?
- Trusted by JDM enthusiasts for motorsport-proven components since 1973.
- Manufactured in Japan with rigorous quality testing for durability.
- Engineered for turbocharged engines to handle high-stress conditions.
Frequently Asked Questions
-
Q: Will this belt fit my 2010 Subaru WRX STI EJ257?
A: Yes it directly replaces the OEM 4PK925 belt on 2004-2021 STI models with EJ25 turbo engines for perfect compatibility. -
Q: What material is used in this belt?
A: Premium EPDM rubber compound with embedded fibers for high friction low stretch and resistance to oil heat and ozone. -
Q: What is the warranty on this HKS belt?
A: Backed by HKS 1-year limited warranty against defects when installed and maintained properly.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Compact box 5 x 3 x 1 inches
- Weight: 0.18 lbs
Belts - Timing, Accessory
Timing belts, accessory belts, serpentine belts, V-belts, and belt service components are stocked at Black Ops Auto Works. Shop racing timing belts, Micro-V belts, V-ribbed belts, timing belt kits, water pump kits, tensioners, idlers, engine accessory belts, supercharger drive belts, and direct-fit replacements for Honda and Acura, Subaru WRX and STI, Mitsubishi, Toyota and Lexus, Nissan and Infiniti, Ford trucks, GM vehicles, European applications, and more. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 236 timing and accessory belt SKUs across timing-drive service, serpentine drive routing, rib profiles, belt lengths, tensioning components, water-pump combinations, and performance engine applications. What This Belt Collection Covers Timing belts synchronize crankshaft and camshaft rotation on belt-driven engines. Accessory belts drive systems such as the alternator, water p...
View Belts - Timing, Accessory Products
HKS
HKS Japanese performance parts for Toyota Supra, Nissan Skyline GT-R, Nissan Silvia and 240SX, Subaru WRX and STI, and other JDM platforms are stocked at Black Ops Auto Works. Shop turbo kits, cat back exhaust systems, coilovers, blow off valves, and engine management upgrades for RB26DETT, SR20DET, 2JZ-GTE, and EJ series turbocharged engines. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 607 HKS SKUs across forced induction, exhaust, suspension, and engine management categories. What This Collection Covers HKS has built its reputation on Japanese sport compact and sports car performance since the late 1970s, developing turbo kits, exhaust systems, and suspension for platforms including the Toyota Supra 2JZ-GTE, Nissan Skyline GT-R RB26DETT, Nissan Silvia and 240SX SR20DET, and Subaru WRX and STI EJ and FA series engines. This collection brings together fitment verified HKS pa...
View HKS Products
Timing Components
Timing components for engine service and performance builds are stocked at Black Ops Auto Works. Shop timing belts, timing chains, timing covers, guides, tensioners, sprockets, pulleys, accessory belts, and timing belt kits for import, domestic, truck, SUV, and performance applications. Every product is filterable by year, make, model, trim, engine, and drivetrain. This catalog includes service and upgrade parts for Honda, Subaru, Toyota, Nissan, Ford, GM, Mopar, European, diesel, and performance engines. What This Timing Components Collection Covers Belts, chains, covers, and drive systems Timing components synchronize crankshaft and camshaft rotation so valve events occur at the correct point in the engine cycle. The collection also includes accessory drive belts and related covers for factory service and performance builds. Timing Belts and Complete Kits Preventive maintenance with matched parts Timing belt kits often combine the belt with tensioners, idlers, water pumps, sea...
View Timing Components Products