PowerStop KOE4603 Z17 OE Front Brake Kit for 2006-2021 Subaru WRX/Legacy/Outback

Vehicle Fitment

• 2006-2007 Subaru B9 Tribeca (AWD) - 3.0L H6
• 2008-2014 Subaru Tribeca (AWD) - 3.6L H6
• 2015-2019 Subaru Legacy (AWD) - 3.6R H6 (all trims)
• 2015-2019 Subaru Outback (AWD) - 2.5L H4 and 3.6R H6 (all trims)
• 2015-2021 Subaru WRX (AWD) - 2.0L Turbocharged FA20 (all trims, standard brake package)

Fitment Notes

• Fits the front axle only - pair with KOE7039 (rear kit) for a complete OE replacement brake service
• Does NOT fit the Subaru WRX STI - the STI uses a Brembo brake system requiring a separate kit
• WRX models equipped with the optional Brembo brake package are also excluded - confirm your brake package before ordering
• All models in this fitment family use Subaru Symmetrical AWD - this kit is compatible with all AWD configurations listed
• This is a Z17 OE stock-replacement kit - for a performance upgrade see K4603 (Z23) or K4603-26 (Z26)

Features

• Z17 Evolution Plus ceramic brake pads are thermal scorched, chamfered, and slotted for fast, quiet break-in and consistently low brake dust output
• Multi-layer rubberized pad shims insulate noise for virtually silent braking - well-suited to everyday commuting and all-weather AWD driving conditions
• Autospecialty OE replacement rotors are precision-machined to strict OE tolerances for a smooth, vibration-free ride from the first stop
• G3000 grade cast iron construction with 100% mill balancing eliminates rotor runout and disc thickness variation right out of the box
• Non-directional friction surface ensures proper pad seating during the break-in period
• Direct bolt-on replacement with no modifications - fits all factory caliper and hub mounting locations

Specifications

• Position: Front axle only
• Front rotor diameter: 315mm (12.40 in.), vented
• Pad compound: Z17 Evolution Plus Ceramic (OE stock replacement formula)
• Rotor type: OE replacement, non-coated, mill-balanced
• Construction: G3000 grade cast iron
• Warranty: 24 months / 24,000 miles limited

Included Components

• 2x Front OE replacement brake rotors
• 1x Front Z17 Evolution Plus ceramic brake pad set
• 1x Stainless-steel installation hardware kit
• 1x High-temperature ceramic brake lubricant

Product Description

The PowerStop KOE4603 is a front Z17 Autospecialty OE Replacement Brake Kit engineered for the 2006-2021 Subaru lineup that shares a common 315mm front brake rotor - covering the B9 Tribeca and Tribeca (2006-2014), the WRX with the standard brake package (2015-2021), the Legacy 3.6R (2015-2019), and all Outback trims (2015-2019). Designed as a direct like-for-like stock replacement, this kit restores factory braking performance without modification using the same G3000 grade cast iron rotor specification and Z17 Evolution Plus ceramic pads that are thermal scorched and chamfered for a fast, quiet break-in.

This kit covers the front axle only - it pairs directly with KOE7039 for a complete front-and-rear OE brake refresh. WRX STI owners and WRX owners with the optional Brembo brake package should confirm their brake system before ordering, as those configurations require a separate kit. Owners looking for a performance upgrade above the OE replacement level should consider the K4603 (Z23) or K4603-26 (Z26) kits instead.