[ko45]

2013 Kia Optima. replacing front left outer tie rod end. I see no zerts to put grease in. Is this a closed system which maintains itself, or what?

 

[Turbonut]

There aren't any lube fittings on the factory parts, but usually replacement aftermarket parts will have grease fittings. The aftermarket stabilizer end links as well as the outer tie rod ends had grease fittings on the units I installed.