This kit contains 3 zinc pencils with end plugs for the Cummins QSB, B and the C Series engines. Location: 1 pencil for heat exchanger, and 2 pencils for the after cooler. Pencil model E-2
- pencil length: 2″Â Â Â diameter: 5/8″
- zinc pencil thread size (male end)Â 7/16-14
- end plug n.p.t = 1/2″
- end plug wrench size= 7/8″
- U.S. Mil-Spec quality
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