Can I choose OEM parts if my insurance wants aftermarket?

Start by reading the estimate, not arguing with it

Insurance estimates identify part types with abbreviations. OEM or new means an original manufacturer part; A/M means aftermarket; LKQ, recycled, or used means a part pulled from another vehicle; reconditioned usually means a repaired wheel or lamp.

No Ontario law forces an insurance company to pay for OEM parts. The working standard on most claims is like kind and quality — parts of comparable function and condition to what was damaged. That standard leaves real room for a documented case that only the original part meets it, and that is the case a good shop knows how to build.

Then narrow the conversation. Fighting an entire estimate rarely works. Fighting for the three parts that genuinely matter usually does.

Which parts are worth pressing on

Some parts carry real fit and safety consequences when they are not original. Others are bolt-on pieces where a quality alternative is genuinely equivalent, and an honest shop will say which is which.

• Structural parts and reinforcements — engineered to deform in a specific sequence, so press hard here
• Panels that carry radar, cameras, or park sensors — mounting geometry decides whether calibration succeeds
• Anything welded to the vehicle, where steel grade and corrosion coating matter for the next decade of salt
• Headlamps and tail lamps, where fit, seal, and beam pattern vary noticeably between makers
• Bumper covers and cosmetic brackets — often the fairest place to accept an alternative part

The documentation that gets OEM approved

Insurance companies approve OEM requests when the file shows why the part is necessary — not when the customer is persistent. That means an estimate written with the OEM part number and a short written reason attached to the line.

Reasons that work include a manufacturer position statement or repair procedure requiring the original part, a documented calibration requirement, no certified aftermarket part existing for that application, corrosion warranty wording on a newer vehicle, and a lease agreement requiring original parts.

We write estimates this way as a matter of course, and we send the supporting document with the request rather than waiting to be asked. Where a part is safety-relevant, we advocate for OEM in writing — that is house policy, not a favour.

Check your policy — some of this is already bought and paid for

Several insurance companies in Ontario sell an OEM or original parts endorsement. If your policy carries one, the argument is already over — the policy owes the original part. Look at your certificate of insurance before you negotiate anything.

New vehicles under a manufacturer warranty are worth a specific question about how a non-original part affects that warranty. Ask the dealer, in writing if you can, and pass the answer to your adjuster.

If none of that applies and the insurance company will only fund a like-kind-and-quality part, you can pay the difference and take the OEM part. We will show you exactly what that difference is before you decide.

How to have the conversation

Ask early, ask narrowly, and put it in writing. Those three habits account for most successful OEM requests, and none of them require an argument.

Early means before parts are ordered. Once an aftermarket fender is sitting on the shop floor, the conversation carries an obstacle it never needed.

Narrowly means naming the two or three parts that actually matter rather than objecting to the estimate as a whole. An adjuster can approve a specific line with a specific reason attached; a general preference for original parts gives them nothing to work with.

In writing means an email or a note in the claim file rather than a phone call neither of you will remember precisely three weeks later. Ask for the response in writing too — most adjusters provide it without friction.

Set honest expectations on your own side as well. Insurance restores the vehicle rather than upgrading it, and an older car repaired with a clean recycled original panel is often the best outcome available: same manufacturer, same steel, same corrosion coating, lower cost, faster delivery.

Timing matters one more way. Raise the parts question while the estimate is being written, not after the insurance company has issued approval. Reopening an approved estimate takes a second review, and reviews take days your rental allowance is quietly spending.

It also helps to know adjusters work within authority limits. Some approvals sit above the person you are speaking with, and politely asking whether the request needs a supervisor is a normal question, not an escalation.

A request that works usually contains all of this:

• The specific part, by name and OEM part number
• The reason it is required — a repair procedure, a calibration requirement, or no certified alternative for that application
• The supporting document itself, attached rather than described
• The price difference, stated plainly
• Your offer to pay the difference if the insurance company declines, so the repair is not held hostage while it is decided

What we promise on parts

When you or your insurance company pays for OEM, both the part and our installation are covered in writing. And when an alternative part is genuinely equivalent for your application, we will say that too — you should not pay extra for a badge on a plastic bracket.

A part that arrives and does not fit correctly does not go on your car. Fit at the gaps is the thing owners notice for the entire life of the vehicle, and no paint job hides it.

This page is general information from a repair shop, not legal advice. For how Ontario treats non-original parts generally, see our page on aftermarket crash parts — and confirm your own policy wording with your broker.