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Ford Radiator Cap (15-18 All)

Market Price $10.99 You Save 9% ($1.00)
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$9.99 (each)

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  • Item 386624
  • MPN# RS531

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    Features & Details

    • Swivel-Seal Design
    • Zinc-Plated for Rust and Corrosion Resistance
    • 21 lbs Pressure Tolerance
    • Original Factory Equipment - OE Fit and Finish
    • Genuine Ford OEM Part - RS531
    • Direct Fit Replacement
    • Fits All 2015-2018 Mustangs
    Peace of Mind. Featuring a 21 PSI tolerance, this direct replacement Ford Radiator Cap is designed as a service replacement and offers added peace of mind by replacing an old or damaged radiator cap. This swivel-seal cap will provide increased durability and allows for removal without causing any damage to the atmospheric seal.

    OEM Quality. Made to the original factory specifications from OEM quality materials, this S550 Ford Radiator Cap is a direct fit replacement and is rated at 21 lbs of pressure, providing reliable maintenance-free operation. The stainless steel pressure valve springs will maintain calibrated pressure throughout its service life.

    Application. This Ford Motorcraft Radiator Cap is a direct fit replacement for 2015-2018 Mustangs, including the V6, GT and EcoBoost models.

    Fitment: 2015 2016 2017 2018 Details

    What's in the Box
    • (1) Radiator Cap
    Installation Info
    Tech Specs
    Will it fit my Mustang?
    • EcoBoost - 15, 16, 17, 18
    • GT - 15, 16, 17, 18
    • GT350 - 15, 16, 17, 18
    • GT350R - 15, 16, 17, 18
    • V6 - 15, 16, 17

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    Customer Reviews (2) Write a Review

    Overall Rating 5.0

    out of 5 stars

    • 5/5

      December 28, 2015

      Top Quality OEM part at affordable price!!!!

      I needed a new radiator cap and American Muscle just happens to carry them. This is a Ford OEM part. It came packaged in the Ford wrap, no knock off brand here. Fit was perfect, great price and delivery was quick.


      Year: 2015 Submodel: GT Fuquay Varina, NC

      Helpful (2)

    • 5/5

      June 30, 2017

      Just like new, OEM

      Awesome job of keeping coolant from escaping. It is new and shiny.


      Year: 2015 Submodel: GT

      Helpful (1)

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