I think that "swivels" are "articulated joints/pivot points" such as ball joints, otherwise known as "złącza kulowe." Steering is układ kierowniczy - cięgna , etc.

Transmission (I now think) refers to various rods that connect the stickshift to the transmission.


Zwrotnice obracają się wokół przegubów kulowych wahaczy lub sworzni
http://www.slideshare.net/qwertyra/ukad-kierowniczy


. All the swiveling components need to be greased.


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Transmission ball joints are an important suspension component found on virtually all modern vehicles. They are a spherical bearing in a socket, functioning similarly to the ball and socket design of a human hip, and serve as one of the main suspension pivot points connecting the control arms of the vehicle to the steering knuckles. The front ball joints allow the front wheels and suspension to move back and forth as well as up and down when the steering wheel is turned and the vehicle is traveling over the road. Usually, when front ball joints fail, the vehicle will display a few symptoms that alert the driver that a problem has occurred and should be serviced.
https://www.yourmechanic.com/article/symptoms-of-a-bad-or-fa...