Ramair Performance Air Intake Kit – Ford Focus MK4 1.0, 1.5 & 2.3 EcoBoost (JSK-389-BK)
This is a Stage 1 performance air intake kit from Ramair, designed as a direct upgrade over the standard factory airbox on the Ford Focus MK4. It improves airflow into the engine, which can sharpen throttle response and bring out more of the turbo and induction sound that the standard setup tends to muffle.
The kit is built around a bespoke heat shield that works with the car’s existing cold air intake (CAI) routing – the channel that feeds cooler air from outside the engine bay into the intake system. By keeping the incoming air cooler and less restricted, the engine can breathe more efficiently.
What’s Included
- Black powder-coated heat shield (shaped specifically for this application)
- Ramair open-cell foam performance filter
- Black powder-coated sensor pipe (retains your existing air sensors)
- Silicone coupler (the flexible joining piece that connects the filter to the intake pipe)
- Full fitting hardware and step-by-step instructions
What Difference Will It Make?
The standard airbox is designed with noise reduction and cost in mind rather than performance. Swapping it for this kit removes that restriction and allows the engine to draw in air more freely. In everyday driving, the most noticeable change is typically a more responsive throttle and an improved induction sound – particularly under acceleration. It’s a genuine upgrade, though it works best as part of a broader performance setup rather than as a standalone power-adding modification.
The foam filter is reusable and washable. Ramair recommend cleaning it using their Filter Maintenance Kit (CK-003) to keep it performing at its best – avoid using general-purpose degreasers, which can damage the foam material.
Fitment
This kit is designed for the Ford Focus MK4 and Ford Kuga (3rd Generation, 2019 onwards) fitted with the following EcoBoost engines:
1.0 EcoBoost – 1.5 EcoBoost – 2.3 EcoBoost ST
Please use the vehicle lookup tool on this page or check the Vehicle Fitment tab to confirm compatibility with your specific model and engine before ordering.
Additional Information
| Weight | 2 kg |
|---|---|
| Dimensions | 25 × 35.5 × 25 cm |
| Brand |

