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Free Shipping Iag 550 Street W25 Cylinder Heads Package W/ Gsc S1 Cam & Lifters For 08-18 Sti Kit [3Ej2yHQt]

$199.99 $639.99 -69%

IAG 550 Street W25 Cylinder Heads Package The IAG 550 Street W25 Cylinder Heads Package is a comprehensive solution for Subaru enthusiasts seeking to upgrade their engines with top-tier performance. Designed as a direct replacement for stock OEM head

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IAG 550 Street W25 Cylinder Heads Package

The IAG 550 Street W25 Cylinder Heads Package is a comprehensive solution for Subaru enthusiasts seeking to upgrade their engines with top-tier performance. Designed as a direct replacement for stock OEM heads, this package is ideal for those facing engine failure or looking to enhance their vehicle's power output. With its robust design and superior engineering, the IAG 550 Cylinder Heads offer a perfect blend of power and reliability for your Subaru vehicle.

Technical Specifications and Features

The IAG 550 Cylinder Heads are crafted from new OEM castings by Subaru of America, ensuring the highest quality and compatibility with your vehicle. This package includes upgraded GSC standard size valves, GSC Viton Valve Stem Seals, IAG Stage 1 Valve Springs with Titanium Retainers, and OEM Keepers. For added performance, GSC S1 Camshafts are available with OEM valve lifter buckets. Key features of this package include:
  • New Head Castings with Upgraded GSC Standard Size Valves and IAG Stage 1 Valve Springs with Titanium Retainers for increased durability.
  • Power Rating of 550 BHP, providing a significant power boost for your Subaru.

Practical Applications and Benefits

The IAG 550 Street W25 Cylinder Heads Package is an excellent choice for both daily drivers and enthusiasts looking to maximize their Subaru's performance potential. Whether you're driving your vehicle on the streets or taking it to the track, these heads offer a seamless blend of power, efficiency, and reliability. The package's comprehensive design ensures compatibility with various Subaru models, including the Impreza, WRX, and WRX STI from 2008 to 2018. With its ability to handle up to 550 BHP, the IAG 550 Cylinder Heads are the perfect solution for drivers seeking an edge in performance and aesthetics.

What Our Customers Say

December 30, 2025

Absolutely no complaints!

This is a really good and useful item.

- Angel E..

December 30, 2025

Absolutely no complaints!

It functions with remarkable precision.

- Isla W..

December 30, 2025

Absolutely no complaints!

A truly brilliant and practical solution.

- Harper R..

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