Limited Time Offer Banner link

Get full access to tune your 2022–2024 6.7L Cummins Factory CM2450b ECM- Click Here

Maryland Performance Diesel

Diesel Performance Parts

Tuning, EGR, exhaust, fuel, and transmission parts for Powerstroke, Duramax, Cummins, and EcoDiesel platforms. Calibrated, dyno-proven, and matched to your truck — select your platform and year to see fitment-confirmed options.

25 products

Limited Time Offer Banner link

Now only 4 HP Tuners Credits are needed to Tune the E41 ECM of GM Duramax L5P (17-23) - Click Here

DIESELR SUPPLY CO.

Official Dieselr Supply Co. gear.

Premium Dieselr merch — Everyday gear for people who live diesel.

T-Shirts Hoodies Stickers
Shop Dieselr Supply Co.

Limited runs. When it’s gone — it’s gone.

Ad Banner