This Subaru timing belt guide rail is found on EJ-series engines with manual transmissions.  It ensures that your timing belt doesn't jump teeth with heavy engine loads, such as engine braking.

These did NOT come on Subaru motors with automatic transmissions.  If your donor is from an automatic car, please consider installing one of these guides above the crankshaft sprocket when renewing the timing belt.

Ref ID: 13145AA021