Rocker Arm, Intake, "4" Code, BMW - N20, N51/N52, N55, S55, N63, S63

This part is listed by BMW as BMW part number 11337559795 (11 33 7 559 795) and is described as an intake valve Rocker Arm used on all N20, N51, N52, N55, S55, N63, and S63 engines. The rocker arm is also known as the roller drag lever, finger, follower, or tappet.

The tip of the rocker arm is what actually contacts and moves the valve stem. There are multiple points of wear on the arm and too much wear will cause poor valve operation and/or noise.

Code. The arm has a numeric code that denotes their intended operation. This is the 4 code. The code MUST match your original lever(s). You could have a combination of codes in the engine. New arms should be used with a new upper lever and new HVA element (see Related Items below).

This is a Genuine BMW rocker arm with a two year warranty. Buying a Genuine part will usually be more expensive than an OEM or aftermarket brand but you are assured that it meets BMW's designs for fitment, performance, and longevity. It will also be the very latest design, incorporating any updates or revisions that an aftermarket brand typically will ignore.

For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.