The KK-5040 Head and Valve Plate Upgrade kit is used and many of the older oil free air compressors made by DeVilbiss and Sears Craftsman.This kit will need to be used when upgrading from the CAC-4281 Valve Plate and the CAC-4281-1 Valve Plate.
If you are ordering the the KK-5040 replacement kit you will not longer use the CAC-1175 Gasket.
The KK-5040 does not come with a new Air Filter Kit so if you require a new air filter kit you will need to order the KK-4981 along with the KK-5040 Head Assembly Kit.
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