Parts for your 2017 Subaru Impreza-Universal joints

2017 Subaru Impreza universal joints: what they do, where they are, and how to look after them

Based on Subaru’s own technical literature—namely the 2017MY Impreza Service Manual (Driveline/Propeller Shaft section) and the Subaru parts catalogue for AU/NZ models—the 2017 Subaru Impreza with Symmetrical AWD uses universal joints (U‑joints) on the propeller shaft that runs from the transmission to the rear differential. The front and rear drive axles use constant velocity (CV) joints, but the centre prop shaft employs U‑joints with a centre support bearing. On most late‑model Subarus these U‑joints are sealed/staked and not designed for periodic greasing.

In this Impreza, the universal joints let the two‑piece propeller shaft transmit torque while accommodating suspension travel and drivetrain angles. That keeps the AWD system smooth and reliable at highway speeds and on rough Kiwi or Aussie roads. Because the U‑joints are factory‑sealed, there’s no routine lubrication interval like older grease‑nipple designs. Instead, the focus is on inspection and, if required, replacement of the complete propeller shaft assembly when wear shows up.

Tell‑tale signs the Impreza’s U‑joints are on the way out include a driveline shudder on take‑off, a clunk when shifting from reverse to drive, or a speed‑related vibration that isn’t from wheels or tyres. It’s common to check the centre support bearing at the same time. If play or binding is found, Subaru’s service guidance typically points to replacing the propeller shaft assembly rather than pressing in new joints, because the staked U‑joints aren’t serviceable in‑car.

For everyday ownership, a mechanic will usually give the prop shaft a once‑over during regular servicing—especially if the car tows, sees gravel roads, or has higher kilometres. While there’s no greasing to do, catching wear early prevents collateral damage and keeps the AWD nice and quiet. If there’s a clicking noise on full lock, that’s more likely a CV joint at a wheel, not the prop shaft U‑joints.

• Inspect at routine services (or around every 20,000–30,000 km) for play, rust dust, or binding.
• Address vibrations or clunks promptly to avoid damaging the centre bearing or diff mounts.
• Expect replacement to be the full propeller shaft assembly on most 2017 models.

Technical references noted: Subaru 2017MY Impreza Service Manual (Driveline/Propeller Shaft), Subaru AU/NZ parts catalogue listings for propeller shaft assembly with staked U‑joints and centre support bearing.

Popular questions about 2017 Subaru Impreza universal joints

Does a 2017 Subaru Impreza actually have universal joints?

Yes—on AWD models, the propeller shaft uses U‑joints and a centre support bearing. The wheel shafts use CV joints, so if there’s a click on full lock it’s usually a CV, not a U‑joint issue.

Are the U‑joints on a 2017 Impreza serviceable or greasable?

They’re factory‑sealed (staked) and not greasable. Subaru’s typical repair approach is to replace the complete propeller shaft assembly if a U‑joint is worn or seized.

What symptoms point to bad U‑joints on this model?

Look for a driveline vibration at road speed, a shudder on take‑off, or a clunk when shifting between drive and reverse. A technician will also inspect the centre support bearing and mounting rubbers at the same time.