Parts for your 2005 Subaru Impreza-Universal joints

2005 Subaru Impreza universal joints: what they do, and how to look after them

Technical sources confirm universal joints are relevant on the 2005 Subaru Impreza. The Subaru Factory Service Manual (MY2005 Impreza/WRX), Propeller Shaft section, details a two-piece propeller shaft with sealed cross-type universal joints and a centre support bearing. The Subaru FAST parts catalogue likewise lists the propeller shaft assembly with U-joints. General repair manuals for 2001–2007 Impreza models also note U-joints on the tailshaft. While the front drive shafts use constant velocity (CV) joints, the prop shaft to the rear diff relies on U-joints, so they’re very much part of the AWD driveline.

On this model, the U-joints let the propeller shaft transmit torque while coping with changes in angle as the suspension moves. Correct phasing of the joints keeps vibration down, and the centre bearing supports the shaft at speed. From factory, these joints are sealed (no grease nipples), so there’s no routine greasing—maintenance is all about inspection and prompt replacement if wear shows up.

What to watch for? A light chirp that speeds up with road speed (often at low speed), a clunk when shifting from drive to coast, or a shudder on take-off can all point to a tired U-joint. Underneath, look for rust “bleed” at the caps, torn seals, red dust, or any free play when you try to twist the shaft by hand near each joint. Binding or notchiness when articulating the joint by hand is another giveaway.

Subaru’s service literature treats the original staked-in joints as non-serviceable, the prescribed repair is to replace the complete propeller shaft assembly if a joint is worn or loose. That said, many driveline specialists in Australia and New Zealand can rebuild the shaft and fit quality serviceable U-joints with grease nipples—handy if the car sees gravel, water crossings, or regular towing.

Practical advice for servicing: check the prop shaft and U-joints at each service or at least every 20,000–30,000 kilometres. If removal is needed, mark the flanges and yokes so everything goes back in the same orientation and phasing. Inspect the centre support bearing while you’re there, and use new self-locking nuts/bolts as specified. Always tighten to the factory torque from the Subaru service manual and road-test for any residual vibration. Kept in good nick, the Impreza’s U-joints will run quietly for a long time.

• Typical symptoms: chirp/squeak with speed, clunk on throttle changes, vibration on take-off or 80–100 km/h cruise.
• Inspection tips: look for rust bleed, dry dust, split seals, or free play at the caps.
• Repair choices: new genuine prop shaft assembly, or specialist rebuild with serviceable U-joints.

Popular questions

Does a 2005 Subaru Impreza have universal joints?
Yes—on AWD models sold in Australia and New Zealand, the propeller (tail) shaft uses universal joints at the front and rear. The front drive shafts use CV joints, so U-joints are only at the tailshaft. Very rare FWD variants (not common in AU/NZ) won’t have a rear prop shaft or its U-joints.

Can the factory U-joints be greased?
The original Subaru U-joints are sealed and don’t have grease nipples, so they aren’t greaseable. If a driveline specialist has rebuilt the shaft with serviceable joints, they should be greased at regular service intervals—typically every 10,000–15,000 kilometres, or after water crossings and dusty road work.

What does replacement usually cost and how long does it take?
Budget roughly 1.0–1.5 hours labour to remove/refit the prop shaft. A brand-new genuine assembly can sit around the AUD/NZD 600–1,200 mark depending on model and supplier. A specialist rebuild with new serviceable U-joints is often cheaper per joint but may require sending the shaft out for balancing. Always confirm pricing locally.