Parts for your 2007 Subaru Outback-Universal joints

2007 Subaru Outback universal joints (propeller shaft U‑joints)

Referencing the Subaru Factory Service Manual for MY05–09 Legacy/Outback, the Subaru electronic parts catalogue, and common aftermarket manuals for 2000–2009 Legacy/Outback, the 2007 Subaru Outback is fitted with universal joints on its propeller (driveshaft) between the transmission and rear differential. These U‑joints are sealed, integrated into the shaft with a centre support bearing, and are not listed by Subaru as serviceable items. The front and rear drive axles use constant‑velocity (CV) joints, not U‑joints.

On this Outback, the universal joints let the prop shaft transmit torque to the rear diff while dealing with changes in angle as the suspension moves. They’re compact, tough, and happy with the AWD system’s constant load. Because Subaru built them as sealed units, there are no grease nipples and no scheduled greasing — they’re intended to run for years with minimal fuss.

As part of routine servicing, it’s smart to give the prop shaft assembly a once‑over. A tech will typically check for free play or notchiness in the U‑joints, look for rust bleed around the caps, and spin the shaft to feel for roughness. They’ll also inspect the centre bearing and its rubber support for splits or sag, and listen for driveline vibrations on a road test.

If wear shows up, Subaru’s official repair path is to replace the complete propeller shaft assembly. That’s because the factory U‑joints are staked in and not sold separately. Many driveline specialists in Australia and New Zealand can rebuild the original shaft with high‑quality circlip‑type U‑joints and re‑balance it — a perfectly workable option when done properly.

• Common signs of tired U‑joints: a rhythmic vibration with road speed, a clunk on take‑off or when shifting, chirping or metallic squeaks, or a shudder under load.
• Good workshop practice: mark the flange positions before removal to maintain orientation, use new hardware where specified, and torque the flange bolts correctly to avoid imbalance.
• There’s no routine greasing, focus on inspection each service or any time a vibration or clunk turns up.

Looked after sensibly and kept free of collision or flood damage, the Outback’s U‑joints can last a long time. When they do finally complain, prompt attention saves the centre bearing and keeps the AWD system smooth and quiet.

Popular questions about 2007 Subaru Outback universal joints

Does a 2007 Outback actually have U‑joints, or only CV joints?

It has both. The front and rear half‑shafts use CV joints, while the propeller shaft to the rear differential uses two sealed universal joints. Subaru’s factory manual for MY05–09 confirms the prop shaft is a two‑piece unit with U‑joints and a centre bearing.

Can the U‑joints be replaced on their own?

Subaru supplies the propeller shaft as a complete assembly and doesn’t list separate U‑joints. However, many driveline shops can rebuild the original shaft with serviceable U‑joints and re‑balance it. That route is common locally and can be cost‑effective when done by a specialist.

What’s the best way to maintain them?

There’s no greasing — they’re sealed. During routine services, have the prop shaft checked for play, rust bleed, and smooth movement, and listen for vibrations on a test drive. Address any clunks, shudders, or squeaks early to avoid collateral wear on the centre bearing or flange hardware.