Seller notes

You have found the Genuine and original MMR HCM and Best selling Brand on Ebay with 100% Positive Feedback since 2004 This is the Genuine, Viton O-ring Sealed, MMR Head Cooling Mod - not the fake UPR Copycat. If it doesnt say MMR it is a poor quality copy & a Leaking fake! Get the Genuine MMR product backed up by 100% Positive Feedback since 2004 and the Ford Coyote Engine World Record to top it off!! MMR's cooling head mod ( HCM ) for the 2018-2023 5.0 (please see the MMR website or our ebay li...

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