How We Source Our Parts

There are a lot of counterfeit and low-quality diesel injectors and pumps on the market, so it's fair to ask where a part actually comes from before you buy it. Here's a straight answer.

Everything we sell is genuine, from an authorized channel

Express Diesel is part of the Bosch Authorized Diesel Network. We sell only genuine Bosch, Delphi, Denso, Stanadyne, and OEM parts, and every part reaches you through an authorized, verifiable channel — never gray-market or unbranded stock of unknown origin. That's the line that matters: not where a part sits before it ships, but whether it's the real, correctly sourced unit.

Two ways parts reach you — both genuine

Stocked in our shop. For much of our catalog, we keep the parts here. When we do, you'll often see a 360° video on the product page of that exact unit, filmed in our shop — so you can rotate it, read the laser etching and stamped numbers, and check the casting before you order. When there's a video, it's proof you're looking at the real part.

Shipped direct from our authorized distributor. Some parts ship to you brand-new in factory-sealed packaging, straight from our authorized distributor. These won't always have a shop video, because the sealed box goes directly to you — but they come through the same authorized channel and are every bit as genuine. A factory-sealed part from the right source is the real thing.

Either way, you're getting a genuine part. The video is a bonus on the items we stock, not the test of whether something is real.

How to verify for yourself

Match the part number on your old unit to the listing. If it shows as a cross-reference or supersession, confirm the cross for your application. If you want to double-check sourcing, fitment, or whether a specific item is shop-stocked or ships from our distributor, message us in the chat box with your part number and engine details — we'll give you a straight answer before you order.

Learn more: how to confirm you're ordering the right part and how to spot a counterfeit injector or pump. See our parts filmed in the shop on YouTube.

We sell and ship within the US.

What payment methods do you accept on your e-commerce website?

We accept a variety of payment methods, including credit and debit cards, bank transfers, and third-party payment services like PayPal.

How long does it take to receive an order?

The delivery time varies depending on the product and destination. We strive to process and ship orders as quickly as possible and provide estimated delivery times during the checkout process.

What is your return policy?

We have a comprehensive return policy that allows customers to return products within a certain timeframe, as long as they meet the criteria outlined in our policy. Please refer to our Returns page for more information.

Do you offer customer support?

Yes, we have a dedicated customer support team that is available to assist with any questions or concerns that customers may have. Customers can contact us via email during our business hours.