Throttle Body Inlet Spacer for Ford Focus (2013-2018) RS ST 2.0 & 2.3 Ecoboost Engine

You didn't buy a hot hatch to wait for the engine to catch up to your right foot. If you are looking to sharpen the connection between your pedal and the manifold, or you are tired of trying to figure out where to tap a boost gauge on a plastic intake, this is the hardware solution you need.

Performance Billet Throttle Body Spacer for Ford Focus ST & RS (MK3 EcoBoost)

The 2.0L and 2.3L EcoBoost engines are fantastic powerplants, but the factory intake system leaves a lot of potential on the table. The stock throttle response can often feel slightly disconnected, especially when you are trying to modulate power mid-corner. Furthermore, the MK3 platform utilizes a composite (plastic) intake manifold. For enthusiasts looking to chase big power, this creates a massive headache: how do you add a boost tap or water-methanol injection nozzle without drilling into plastic and risking cracks or vacuum leaks?

The R-Spec Throttle Body Spacer is the answer to both the drivability and the expandability of your build. By extending the intake tract and increasing plenum volume slightly behind the throttle plate, this spacer smooths the air velocity entering the manifold. The result isn't just about peak numbers; it's about "area under the curve" drivability. You get a crisper initial bite when you crack the throttle and smoother delivery as the turbo spools.

Beyond the airflow dynamics, this is a critical utility mod for modified builds. Machined from billet 6061 aluminum, it provides a solid mounting point that the factory plastic simply cannot. The inclusion of two 1/8 NPT ports is the "killer app" here. It allows you to run a boost reference line or a Methanol Injection nozzle cleanly and reversibly. No drilling, no shavings in your engine, and no ruined stock manifolds.

Why You Need This Upgrade

• Sharper Throttle Response: Optimizes air velocity entering the plenum for an immediate reaction when you step on the gas.
• Ready for Meth/Boost: Features dual 1/8 NPT ports, making it the safest way to install water/methanol injection or a boost gauge sender without drilling the OEM manifold.
• Indestructible Construction: CNC-machined from Billet 6061 Aluminum, eliminating the risk of warping or cracking under high boost pressures.
• Stealth Aesthetic: The anodized black finish blends seamlessly into the engine bay for an OEM+ look that resists corrosion.
• Leak-Free Seal: Includes a high-quality O-ring and high-tensile hardware to ensure you never lose boost pressure at the flange.

Installation Notes

This is a direct bolt-on installation that requires no permanent modification to your vehicle. The kit comes with extended high-tensile bolts to accommodate the extra thickness of the spacer. When installing, ensure the O-ring is properly seated in its groove to prevent boost leaks. If you are not using the NPT ports immediately, ensure the included blanking plugs are installed with a small amount of thread sealant.

Replaces These OEM Applications & Fitment

• MK3 Ford Focus RS 2.3L EcoBoost Turbo (2013–2018)
• MK3 Ford Focus ST250 2.0L EcoBoost Turbo (2013–2018)

Whether you are daily driving your ST or building a high-horsepower RS track weapon, this spacer gives you the response you want now and the fueling capability you'll need later.