Oil Drain Plugs and Gaskets



DRAIN PLUG APPLICATIONS   

 Drain plug definitions  

1. Guide Point / Dog Point / Pilot Point

An unthreaded cylindrical tip that is smaller than the plug diameter.
Used to help speed alignment and reduce the chance of cross threading. 

2. Oversize

Oversize plugs are used when the existing threads are striped. 
They are tapered, hardened and form new threads.
These plugs can permanently repair an oil pan, saving the cost of a replacement.

SOS= single oversize  DOS=double TOS=triple oversize

Oversize plugs are just slightly larger than the original plug.
Double and  triple oversize plugs are available only in the common ½”-20 size. 

3. Piggy Back

Piggy back plugs are also oversize, but they have a main plug that is installed once into the old threads.
Then the oil is drained thru the smaller secondary plug.

Piggy Back plugs are used when you do not want to re-use the original threads. 

4.        Magnetic 

Magnetic plugs remove abrasive, ferrous metal particles preventing their circulation through lubrication or hydraulic systems.

Magnetic plugs have been used since the 1930’s typical applications include:

Air Conditioning and Refrigeration Compressors

Recreational Vehicles – Snowmobiles – All Terrain Vehicles