580k diesel shut off solenoid

i hate to keep asking for advice (not giving it) on these forums but I noticed that my diesel shut off solenoid on my case 580k injector pump is leaking between the plastic and metal. the injector pump is a lucas CAV (DPA?) and i sourced a solenoid with part number 7167-620A (1250 - 11.728.121). I was just wondering if anybody knows if this is the right part for my pump? im asking because once i buy i cant return...