Are these genuine, correct-fit parts?
Yes. We list real service and repair parts for specific diesel platforms, organized by engine. We include OEM part numbers and cross-references where available so you can confirm fitment. When in doubt, email us before you order.
How do I know a part fits my truck?
Check the engine and model-year range in the listing title and description against your vehicle, and match the OEM part number you are replacing. Still unsure? Email sales@coretransmissionparts.com with your engine, year, and the number you are replacing and we will confirm it for you.
How fast do orders ship?
In-stock orders ship within 1–2 business days with tracking. Standard delivery is typically 3–7 business days. See our Shipping Policy.
What is your return policy?
New, uninstalled parts can be returned within 30 days. See our Return & Refund Policy for full details.
Do you sell delete or emissions-defeat parts?
No. We sell replacement and service parts to keep trucks running properly and legally. We do not sell any product designed to defeat a vehicle's emissions-control system.
How do I contact you?
Email sales@coretransmissionparts.com, Monday–Friday, 9:00 AM–5:00 PM ET. We reply within one business day. See our Contact page.