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Genuine OEM Thermostat Assembly for 03-05 Hyundai Sonata / 03-06 Kia Optima 2.7L

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Genuine OEM Thermostat Assembly for 03-05 Hyundai Sonata / 03-06 Kia Optima 2.7L

Product Information:

Part Type:

  • Genuine Parts - Engine Coolant Thermostat

Product Code / Interchanges

  • 2550037200 / 33878, 2550035331, MD194988, MD174233, 21200AD200, 2550035331, 2550035530, 9091603094, 9091603100

OEM Part Number:

  • 25500-37200

Vehicle Fitment:

  • 2003-2006 Hyundai Santa Fe 2.7L / 3.0L
  • 2003-2005 Hyundai Sonata 2.7L
  • 2004-2008 Hyundai Tiburon 2.7L
  • 2005-2009 Hyundai Tucson 2.7L
  • 2004-2005 Hyundai XG350 3.5L
  • 2004-2006 Kia Amanti 3.5L
  • 2003-2006 Kia Optima 2.7L
  • 2003-2005 Kia Sedona 3.5L
  • 2003-2006 Kia Sorento 3.5L
  • 2006-2010 Kia Sportage 2.7L


  • Hyundai / Kia Genuine Parts

General Information:


  • Our warranty covers products purchased from us for a duration of 1 year.
  • In the event that you receive a defective product, this warranty entitles you to a free replacement of your product.
  • Shipment fees for returning the defective product are to be paid by the buyer.
  • Shipment of replacement to the customer are to be paid by seller.
  • Returned products must be inspected to confirm a defect. Once confirmed a replacement will be shipped to you (usually within 72 hours).
  • If you believe that your product is defective, please contact the seller by clicking the Ask a question link to the bottom left of this listing.
  • This warranty does not cover failures due to:
    • Accident or collision.
    • Improper installation.
    • Misuse or abuse.
    • Consequential damages due to failure of other parts.
    • Parts used off-road or for racing purposes (unless explicitly stated).
  • This warranty does not cover:
    • Consequential, incidental, special, or exemplary damage resulting from failure of this product.
    • Damages resulting from improper installation.
  • This warranty is considered void if:
    • The vehicle is sold, gifted, or ownership has been transferred in any way.