HKS Fine Tune V-Belt 6PK1905 for 2015-2021 Subaru WRX 24996-AK035

Vehicle Fitment

• 2015-2021 Subaru WRX

Fitment Notes

• 6PK1905 belt specification - confirm this matches your accessory drive configuration before ordering

Features

• Belt strength optimized for the specific engine application, maintaining stable belt tension even as heat expansion occurs in the engine bay
• Molded tooth-forming process (rather than traditional outside-pressure application) preserves belt strength and reduces skipping under high-torque conditions
• H-NBR grade rubber teeth for added strength and durability
• Increased durability at high engine bay temperatures common in tuned vehicles
• Improved cold-weather performance versus the OEM belt
• Lightweight with strong friction tolerance for smooth, reliable, slip-free performance

Specifications

• Belt Spec: 6PK1905
• Material: H-NBR grade rubber teeth

Included Components

• 1x Fine Tune V-Belt

Product Description

The HKS 24996-AK035 is a Fine Tune V-Belt (6PK1905 spec) built for the 2015-2021 Subaru WRX, designed to deliver smooth, slip-free performance even under the demanding conditions of a tuned engine bay. Unlike traditional belts formed by applying outside pressure to the teeth - which can weaken them over time - HKS molds the tooth shape directly, preserving strength and reducing the risk of belt skip under high-torque operation.

Built from H-NBR grade rubber, this belt offers increased durability at high engine bay temperatures alongside improved performance in cold weather, making it a reliable upgrade over the factory serpentine belt for owners running increased boost or accessory loads. A simple, effective upgrade for anyone looking to eliminate belt slip as part of a broader WRX performance build.