Installing new injectors? It is a good idea to have a new set of 4 fuel injector o-rings on hand as the old ones usually come out of the rail torn or rotted. It is also very easy to tear the old O-rings upon reassembly.

With something as important as the fuel system it is a great idea to have these on hand anytime you pull the fuel injectors.

OEM Mitsubishi

Sold individually.