DON’T EVER LEAK AGAIN!  

APP’s Side Freeze Plug—bolt on with O ring will eliminate blown freeze plugs on Cummins engines due to high rpm and increased coolant pressures in modified engines.  It's also a great way to dress up your diesel engine as the engine is usually black, and the freeze plugs are a shiny aluminum.

•  Eliminates blown freeze plugs

•  Machined in the USA from Military grade 6061 aluminum

•  Includes O-ring

Fits all 3.9L, 5.9L, and 6.7L Cummins diesel engines ’89 to Current

Vehicle could need from 1 to 4 depending on the block:  

Engine                                Years                    Number of Side Freeze Plugs*

3.9L 4BT                        1989-1998                                    1 or 2

5.9L 6BT                        1989-1998                                    3 or 4

5.9L/6.7L 24 Valve       1998-current                                   3

* For reference only, please confirm the quantity needed for your specific engine.

FIND OUT WHERE TO BUY