can you cap heater tubes on a waterpump??
#5
The size plugs for the passenger's side upper and lower pipes are a 3/8" NPT. The driver's side uses a 1/2"NPT. The cheapest way would be to get some brass ones from NAPA, (they sell the thread taps too), but if you want something more fancy like an aluminum anodized plug, your best bet is to check Summit or Jegs. (Aeroquip, Earl's, etc.)