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    Personal Insurance Blog

    OEM Parts vs After Market Parts

    Posted by Jane Logan

    Mon, Mar 26, 2018 @ 03:01 PM

    What’s the difference between OEM and After Market Parts?

    • OEM (Original Equipment Manufacturer) parts are “name brand” new parts made by the original manufacturer to meet the specifications of a specific vehicle make and model. Authorized auto dealerships that sell this particular brand of vehicle(s) usually have exclusive distribution rights to sell these parts.
    • After Market (Non-OEM) parts are “generic” new parts made by companies other than the original manufacturer.  Independent auto part stores and independent (not auto dealership) repair shops sell these parts.


    Why don’t people want After Market Parts used for repairs?

    Owners believe After Market parts are inferior or less safe than OEM parts.  Independent safety rating organizations such as The Certified Automotive Parts Association (CAPA) and the Insurance Institute for Highway Safety (IIHS) dispute this concern.   If After Market parts weren't as safe as OEM parts, manufacturers would pay the price in product liability lawsuits.  They compete just fine by selling the same quality parts, same specifications, just with lower margins.


    Why do insurance companies use After Market Parts for repairs?

    • Parts are easier to get, reducing repair time.
    • Using After Market parts reduces repair costs by 35%, which in 2010 saved $14.08 Billion.
    • Reducing repair costs reduces premium costs that consumers pay.
    • State law either allows or in some cases requires insurance companies to use After Market parts

    Damaged Vehicle for OEM Blog-1.jpg


    What gives insurance companies the right to use After Market Parts?

     The laws in each state regulate auto repairs. In Massachusetts, 211 CMR 133 ( requires the use of After Market parts if the damaged part meets the guidelines:

    CMR 133.04: Determination of Damage and Cost of Repair

     (1) Appraisers shall specify that damaged parts be repaired rather than replaced unless: the part is damaged beyond repair, or the cost of repair exceeds the cost of replacement with a part of like kind and quality, or the operational safety of the vehicle might otherwise be impaired. When it is determined that a part must be replaced, a rebuilt, aftermarket or used part of like kind and quality shall be used in the appraisal unless:

    (a) the operational safety of the vehicle might otherwise be impaired;

    (b) reasonable and diligent efforts to locate the appropriate rebuilt, aftermarket or used part have been unsuccessful;

    (c) a new original equipment part of like kind and quality is available and will result in the lowest overall repair cost;

    (d) for vehicles insured under policies written on or before December 31, 2003, the vehicle has been used no more than 15,000 miles unless the pre-accident condition warrants otherwise; or.

    (e) for vehicles insured under policies written or renewed on or after January 1, 2004, the vehicle has been used no more than 20,000 miles unless the pre-accident condition warrants otherwise.

    A part is of like kind and quality when it is of equal or better condition than the pre-accident part.


    Are After Market parts really as good and safe as OEM parts?

    The manufacture of After Market parts is regulated and repair shops need to be licensed.  If After Market parts were indeed inferior they would be causing accidents, ultimately increasing costs for insurers.  Using inferior parts isn’t in anyone’s best interest, but using After Market parts is in everyone’s best interest as it increases competition, reduces repair costs, and ultimately lowers insurance premiums.


    Is it worth challenging the insurance carrier requiring I use After Market Parts? 

    If State law allows using After Market parts, your insurance company will authorize these for repair.  If a consumer wants to pay for OEM parts on their own, that is, pay the higher margin the manufacturers get for these, most body shops will agree to use them.  Even so, this can delay repairing your vehicle as the claim can become more complicated.  The longer it takes to negotiate the claim, the longer you’re without a vehicle and/or you’re paying for a rental.


    I’m still not convinced.  Can I buy OEM coverage?

    Yes!  We represent several companies that offer OEM part coverage for personal vehicles (not yet for business insurance), based on the model year and odometer reading/mileage on your vehicle.   As a rule of thumb, the cost is generally 30%-40% additional to the cost of your collision and comprehensive coverage. 


    If you'd like to discuss your personal automobile coverage, call one of the Gordon Atlantic Insurance professionals toll free at (800) 649-3252.  Prefer to type instead of talk? Use the form at the top left of the blog for a return phone call or email.

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    Tags: auto claims, OEM Parts, After Market Parts, OEM Coverage

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