Timing Belt Tensioner

The belt tensioner is responsible for taking up any slack in the timing belt to maintain accurate cam timing.  

A failed tensioner may leak oil or may make noise during engine operation.  A good tensioner will have a high amount of resistance when compressing the plunger and will maintain that resistance over the full range of travel.

When installing a new tensioner it is suggested that it be bled of any trapped air by compressing and releasing the plunger across the full range of travel.  This should be done with the tensioner in an upright position (best done with in a press) and should be compressed and released very slowly without building any significant force on the plunger.

Manufacturer Part No: 13033AA042

NOTE: OEM (Original Equipment Manufacturer) indicates this part originated from the supplier to Subaru that manufactured the genuine part.  It is identical to the Subaru part but without the Subaru packaging and markings on the part may differ.

What it fits: 

• STI EJ257 MY04-12 (Up to Production Date Jan 20, 2012)
• STI EJ207 MY99-12 (Up to Production Date Jan 20, 2012)
• Legacy GT EJ255 MY05-12 (Up to Production Date Jan 20, 2012)
• All other EJ255
• EJ20X / EJ20Y
• EJ205 / EJ204 / EJ206 / EJ208
  
• EJ20K
• EJ251 / EJ253 / EJ25D
• EJ22 MY97-01
• EJ18 MY97
•