The International WorkStar Engine & Performance Parts category offers a variety of parts to boost your truck's style. From fuel systems and turbochargers to exhaust components and engine tuners, this category has everything to enhance the performance of your International, Detroit Diesel, Cummins, or Caterpillar-powered truck. Key features include: - FASS industrial-grade fuel systems for better fuel flow and combustion - Premium turbochargers from brands like Borg Warner and Bully Dog for increased power - ECM tuners and diagnostic tools for optimized engine performance - Exhaust upgrades for better flow and a custom look with mufflers, tips, and piping - Mounting hardware, hoses, and fittings for easy installation Whether you drive a Class 8 semi-truck, construction vehicle, or heavy-duty pickup, the International WorkStar Engine & Performance Parts category provides the necessary components to improve your rig's capabilities and stand out on the road.