Official Site · American O.E.M. Parts Company
Answers

Frequently asked questions

What OEM means, why we ask for the VIN, and how part numbers actually work.

What does O.E.M. mean?

O.E.M. stands for Original Equipment Manufacturer. An OEM part is built to the vehicle manufacturer's own specification — the same form, fit, function and material as the part fitted at the factory — rather than to a generic aftermarket design.

Which vehicle brands do you cover?

We supply parts for the General Motors family: Chevrolet, GMC, Cadillac, Buick and Hummer, across passenger cars, SUVs, light trucks and heavy-duty platforms.

How do I confirm the correct part for my vehicle?

Send the VIN or the OE part number with your request. We verify exact fitment against GM records before quoting, and return a written quote within one business day.

Why does the VIN matter so much?

Because a model name is not a specification. Trim level, towing package, brake package and production date all change part numbers on vehicles that are otherwise identical. The VIN resolves every one of those variables at once.

What is a superseded part number?

When a manufacturer revises a component, the original number is replaced by a new one that fits the same application. Ordering against an old number from a printed catalogue or an old invoice will often fail. We check supersessions on every request.

Is an OEM part the same as a genuine dealer part?

They are related but not identical terms. Both are built to the manufacturer's specification. The difference is generally in packaging and distribution route rather than in the engineering of the component itself.

Do you supply parts for discontinued models?

We source them where they remain obtainable — the H2 and H3 are a regular example. Where a number is genuinely discontinued with no supersession, we tell you plainly rather than leaving an order open.

How long does a quote take?

One business day for a standard request. Sourcing jobs on older or discontinued platforms can take longer, and we tell you upfront when that is the case.

Do you sell to workshops and fleets?

Yes. Trade accounts get dedicated pricing, priority sourcing and account terms. Tell us your business details in your first enquiry and we will set it up.

What warranty applies?

Warranty terms are supplied in writing with every quote, before you commit to the order, so there is no ambiguity about coverage after the fact.

Need this part identified?

Send the VIN and a description. We will identify the correct OE part and quote it back to you.

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