The Diesel Engine
Parts Superstore
Fast. Reliable. Accurate. Genuine and aftermarket parts for Caterpillar, Cummins and more.
Satisfaction Guaranteed
Every order is backed by our satisfaction guarantee — if it isn't right, we'll make it right.
Guaranteed In-Stock Program
We offer a deep catalog across every major engine line — most popular parts ship the same day.
Backed by Expert Staff
Every agent is a diesel specialist. Call 888.687.0539 and talk to someone with parts expertise.
About Diesel Parts Direct
Our mission is to deliver the absolute best parts-buying experience in the heavy-duty diesel industry, without exception. We choose to stock only the best-performing, OEM-quality components available, learning them inside and out to ensure your experience with our organization and the parts we supply is second to none. Diesel Parts Direct is one of the fastest growing diesel parts suppliers in the United States.
Discover our brandWhy Diesel Parts Direct
Four decades supplying the parts that keep diesel engines running — and
the people who know them.
Years of Experience
A trusted name in diesel parts since the start — deep catalog knowledge across every major engine line.
Parts In Catalog
One of the largest diesel parts inventories online, searchable by OEM number and cross-reference.
Diesel Specialists
Every agent is a diesel specialist. Call 888.687.0539 and talk to someone with parts expertise.
Built for the way you buy.
Get your account’s correct pricing and payment terms, plus easy reordering of any items you buy regularly. Place your order quickly yourself or let our knowledgeable staff help you place it — the choice is yours.
- Your Pricing — Your account's pricing applied automatically when you sign in
- Payment Terms — Your account's correct payment terms applied on every order
- Reorder in One Click — Re-order any past items straight from your dashboard
- Purchase Orders — PO fields visible during every step for easy reconciliation