Front Mount Intercooler Kit for Mazdaspeed3 (2007 thru 2014)

This front mount intercooler kit is purpose-built for Mazdaspeed3 owners who are tired of watching their engine’s power get robbed by heatsoak. Whether running the stock turbo or an upgraded setup, this kit delivers a direct-fit upgrade path to eliminate the factory top-mount intercooler’s inherent flow bottleneck. It’s the simplest and most effective way to add both horsepower and long-term reliability to the Speed3 platform.

Specifications

• Intercooler Core: Garrett GT high density bar and plate
• HP Capacity (Standard Core): Over 400HP
• HP Capacity (Optional Upsized Core): Garrett 600HP intercooler
• Charge Temp Reduction: Over 30 degrees
• Piping: Mandrel bent, high polished aluminum
• Turbo Connectors: Multi-layer silicone, color of choice (Standard, Red, Blue, Black)
• Clamps: Stainless T-bolt clamps
• Mounting Hardware: Stainless mounting brackets and hardware included
• BOV Flange: Flanged for HKS BOV (can be changed to Tial or separate stock weld flange upon request)
• Installation: No cutting required (standard kit)
• Garrett P/N (Optional Upsized Core): ATP-INT-003

Performance & Application

Designed specifically for the Mazdaspeed3 engine, this kit works whether the car is running its factory turbocharger or has been upgraded, with power gains reported to be huge in either configuration. By lowering peak operating charge temperature significantly, the kit allows the Speed3 engine to run at full power freely and consistently even when the engine is warm, rather than pulling timing or holding back power under heatsoak conditions. The reduced charge temperature also lowers the chance of engine knock, making this an upgrade focused as much on reliability as raw output. The Garrett GT core replaces the factory top-mounted intercooler’s flow-through bottleneck, which is a known limiter of peak HP on this platform.

Compatibility & Fitment

• Mazdaspeed3, model years 2007 through 2014
• Separate option available for 2010 and newer Mazdaspeed3 models

Frequently Asked Questions

What HP can this intercooler kit support?

The standard Garrett GT bar and plate core supports over 400HP. An optional Garrett 600HP intercooler upgrade is also available.

Does installation require cutting the bumper or bodywork?

No cutting is required for installation of the standard kit. The optional taller 600HP Garrett intercooler does require cutting of the bumper support area to clear.

What blow-off valve flange does this kit use?

The kit is flanged for an HKS BOV, though this can be changed to another flange upon request.

What does the 600HP intercooler option refer to?

The optional 600HP Garrett intercooler upgrade corresponds to P/N: ATP-INT-003 and requires cutting of the bumper support area to clear.

For Mazdaspeed3 owners serious about unlocking consistent, knock-free power on stock or upgraded turbo setups, this Garrett GT core-based front mount intercooler kit is a direct, no-cutting-required path to a cooler, stronger-running engine.