You save $201.17! Free Shipping Product Code: 69-3518TS. Qty: Description ... Each kit is proven on a rear-wheel dynamometer to increase horsepower and torque Engine Horsepower Upgrade K&N 69-3518TS Focus Cold Air Intake Typhoon Kit ST 2013-2018 69-3518TS Intake Gain a guaranteed increase in horsepower and torque with a K&N cold air intake system featuring a mandrel-bent aluminum intake tube BETTER TOWING: Improves acceleration and uphill performance when towing by improving throttle response. K&N Typhoon Performance Intake For Ford Focus St International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.