ATC Brand new after-market Fan Housing & Rewind Starterwhich fits the following STIHL models, and replaces OEM Part #4128 080 2101:
FS 480
FS 480-K
FS 480-KZ
FS 480-KWZ
FS 480-KW
FS 480-W
FS 480-Z
FS 480-L
SP 400
SP 450
SP 451
SP 481

Note: OEM Part #4128 080 2101 replaced Part Numbers #4128 080 2100 and #4128 080 1800. This is a complete Fan Housing with Rewind Starter Assembly that consists of the following parts:
Fan housing  Bushing  Rewind spring   Rope rotor  Starter grip ElastoStart Cap   Starter rope   Pawl   Washer   Spring    Self-tapping screw     Screw