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" diameter: 5/8"
- zinc pencil thread size (male end) 7/16-14
- end plug n.p.t = 1/2"
- end plug wrench size= 7/8"
- U.S. Mil-Spec quality
