Boost your Sterling A-Series truck 's power and efficiency with top-quality engine upgrades! Whether you run a Cummins, Caterpillar, or Detroit Diesel engine, these performance parts have everything you need to optimize performance. What 's in the lineup? Fuel systems FASS industrial-grade diesel systems delivering up to 290 GPH Turbochargers High-performance options from Borg Warner, Bully Dog & Caterpillar Exhaust upgrades Quiet performance mufflers & custom exhaust tips for better sound & style Designed for durability and high-flow performance, these parts help you get more power, efficiency, and style out of your Class 8 truck. Upgrade your ride today!