Water Pump Heater Core Rubber Bypass Caps Plugs Choose 5/8" or 3/4"

SKU: 107-013
  • Sale
  • Regular price $2.50


These are used to block off heater cores, intake manifold fittings, water pump hose fittings, etc.

Please choose your size using drop down menu above.

Single sizes sold individually. You may also choose a combo pack which includes (2) 5/8" and (2) 3/4 bypass caps.

2 of each size is required to block off most GM heater cores and water pumps.

5/8" Measures: ID 5/8", OD 15/16", Length 1-1/16"
3/4" Measures: ID 3/4", OD 1", Length 1-1/2
Combo Pack Includes: (2) 5/8" and (2) 3/4" Bypass caps.


Fits: Many GM vehicles from 1946-Up