Built for Diesel Performance
Shop performance parts and tuning for Ford Powerstroke, GM Duramax, and Ram Cummins applications.
Shop By Truck
Choose your truck, then check engine, pickup or cab-and-chassis fitment on each listing. Model results include listings with specified model fitment; choose “All models” to include other year-matched accessories.
Looking for Chevy / GMC or Ram? Ask us about your setup.
Featured Diesel Parts & Tuning
Performance Tuning
Apex is an ASAP Calibrations dealer. Explore tuning and support upgrades for supported Powerstroke applications. Match your truck’s model year, engine, transmission and tuning device to the individual listing before ordering. For Duramax or Cummins tuning, contact us to confirm available options.
Diesel Focus. Straightforward Support.
Diesel-focused selection. Performance parts and tuning organized around your truck.
Fitment comes first. Clear model years, engine details and application notes help you find the right setup.
Order online. Get support. Based in College Station, Texas, Apex helps you confirm product and tuning requirements before you buy.
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