Subaru OEM Brake Booster (15-21 STI) | 26402VA011

Overview

The Genuine Subaru OEM Brake Booster (Part #26402VA011) is the factory-original replacement for 2015–2021 Subaru WRX STI models, delivering the precise pedal feel and braking confidence your STI was engineered for. Designed and manufactured to exact Subaru factory specifications, this brake booster ensures a perfect fit, seamless integration with your ABS and braking system, and the reliability of OEM engineering. Whether you're replacing a failing unit or restoring your STI to like-new braking performance, this is the only part that meets the factory standard.

Key Features & Benefits

• Genuine Subaru OEM Quality – Manufactured to Subaru's exact factory specifications, ensuring the same performance and durability as the original component your STI left the factory with.
• Perfect OEM Fit – Direct bolt-on replacement with no modifications required; integrates seamlessly with existing brake lines, master cylinder, and firewall mounting points.
• Consistent Pedal Feel – Restores factory brake pedal response and vacuum-assist pressure, giving you the confident, progressive braking feel the STI was tuned for.
• Factory Warranty Eligible – As a Genuine Subaru part, this component is backed by Subaru's OEM parts warranty for peace of mind.
• Correct Part for High-Performance Application – Engineered to handle the braking demands of the WRX STI's Brembo brake system and performance driving requirements.
• Exact Cross-Reference – Matches OEM part number 26402VA011; eliminates any guesswork when sourcing a replacement.

What's Included

• 1x Genuine Subaru Brake Booster (Part #26402VA011)

Specifications

Fitment & Compatibility

This brake booster is a direct OEM replacement for the following Subaru vehicles:

Always verify your vehicle's VIN and current part number before ordering to confirm fitment. Cross-reference OEM part number 26402VA011 with your existing component or dealer parts catalog.

Installation

This brake booster is a direct bolt-on OEM replacement designed to mount to the factory firewall location and connect to the existing brake master cylinder and vacuum line without modification. Due to the safety-critical nature of brake system components, professional installation by a qualified Subaru technician or experienced mechanic is strongly recommended. Proper brake system bleeding and pedal travel verification should be performed after installation.