OEM MTU Detroit Diesel Water Pump, p/n 23518215. NSN 2930-01-435-7191. Interchanges with Daimler DDE23524729, and E23526039. Includes 23526038 O-ring. Original Invoice on these is $656.00, that was a steeply discounted price already Get Genuine Detroit Diesel here and save a bunch of money NO CORE CHARGE 15322 1WH3C