This product is used with a stock P1 T5 airbox to reduce the intake restriction caused by the ECU cooling fins. Such a spacer combined with a high-flow panel filter is the best way to open up your T5's lungs. Cone filters and mushroom filters draw hot air from the engine bay, whereas the stock airbox has a ducted snorkel to draw from outside - a cold air intake system. Improves clearance around the ECU Helps reduce heat soak by increasing airflow Ideal for modified and performance engine bays Direct bolt-on design No permanent modification required Designed for P1 platform vehicles Included:1x 20mm ABS Spacer4x Securing boltsYou must include your own silicone sealant to seal the spacer. C30Mods recommends Tiger Seal Polyurethane adhesive.## Please note: there is a 2 working day lead time on this part ##