Parts for your 2008 Subaru Exiga-Universal joints

2008 Subaru Exiga universal joints (U-joints) – purpose, care and when to replace

Universal joints are absolutely relevant to the 2008 Subaru Exiga. Subaru’s factory service information for the Exiga (YA chassis, Driveline/Axle – Propeller Shaft) and the Subaru FAST parts catalogue both show a two-piece propeller shaft with U-joints and a centre support bearing running to the rear differential. On this model the U-joints are typically staked into the shaft from the factory and are considered non-serviceable in isolation, which is why Subaru lists the complete prop shaft assembly as the service part.

On the road, the Exiga’s universal joints let the tailshaft transmit drive from the transmission to the rear diff while accommodating changes in angle as the body and suspension move. They’re different to the CV joints at the wheel ends: CVs handle larger steering angles, while U-joints keep the tailshaft spinning smoothly under varying driveline angles. The Exiga uses two U-joints (front and rear) with a centre support bearing to maintain alignment and reduce vibration in Subaru’s symmetrical AWD layout.

Routine servicing is mostly about inspection, because the Exiga’s factory U-joints aren’t fitted with grease nipples. A quick look and wiggle during scheduled services helps catch issues early:

• Listen for a metallic click or clunk on take-off or shifting from reverse to drive.
• Feel for a shudder or vibration at motorway speeds that changes with load.
• Check for red/brown dust near the caps, signs of dried grease or heat.
• Inspect the centre bearing rubber for cracking and the tailshaft for dents.

If there’s any free play in the crosses or roughness when articulating the joint by hand, it’s time to act. Because the OEM joints are staked, owners typically either replace the complete propeller shaft assembly or have a driveline specialist fit circlip-type U-joints and rebalance the shaft. Reassembly should keep the yokes in phase, align any factory marks, and use new flange hardware where specified. It’s smart to address a failing centre support bearing at the same time, as worn bearings can mimic U-joint vibration.

Lowered or lifted Exigas can increase driveline angles and accelerate wear, so more frequent checks are worthwhile. Sorted early, U-joint issues are a straightforward fix that restores the Exiga’s smooth, quiet AWD feel.

• Does the 2008 Subaru Exiga have universal joints?
  Yes. The Exiga’s AWD tailshaft uses two universal joints and a centre support bearing as shown in Subaru service literature and parts listings for the YA chassis propeller shaft assembly.
• Are the Exiga’s U-joints serviceable, or is the whole shaft replaced?
  From the factory they’re staked and not intended to be serviced separately. Many owners either replace the complete prop shaft or have a driveline shop fit serviceable U-joints and rebalance the shaft.
• What are the common signs of worn U-joints on an Exiga?
  Clunks on take-off, a chirp at low speed, and a vibration that ramps up with road speed. Any play in the crosses or rust-coloured dust at the caps points to wear.