This is a machining service we offer for you to send in or drop off your pair of 7.3L Powerstroke cylinder heads to be o-ringed. We recommend using Cometic MLS or MLX type head gaskets with O-ringed heads. Factory graphite gaskets will not work as the wire o-ring will cut through the compacted graphite.
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California Residents: Prop 65 Warning
WARNING: Cancer and Reproductive Harm