Parts Internally Compatible to Genuine: YES and NO. See Note Below.
You can use the JMP parts Kits listed below to also service OEM / Genuine Brand pumps but you MUST use CAT Mechanical Seal Part Number 4204328 in place of JMP Mechanical Seal MCSSET0008. The JMP MCSSET0008 Seal is only for JPR-CT0440 JMP Marine Brand Pump.