Parts for your 2011 Subaru Forester-Universal joints

2011 Subaru Forester universal joints

Yes — universal joints are fitted to the 2011 Subaru Forester. Technical sources including the Subaru Factory Service Manual for the 2011MY Forester (SH) in the Driveline & Axle – Propeller Shaft section, and the Subaru FAST parts catalogue, show the Forester’s two-piece propeller shaft uses front and rear universal joints with a centre support bearing. The steering intermediate shaft also uses a small U-joint. Subaru service literature notes the propeller shaft U-joints are non-greaseable and typically supplied as part of the complete shaft assembly for service.

On the 2011 Forester, the universal joints (U-joints) let the prop shaft transmit drive from the transmission to the rear diff while the suspension moves and the angles change. They keep the AWD system smooth and quiet by managing that misalignment without binding. When they wear, drivers can cop a shudder on take-off, a rhythmic vibration at highway speeds, or a clunk when selecting drive.

For servicing, the factory approach is inspection rather than regular replacement. The U-joints are sealed, so there’s no periodic greasing. A good workshop will check for red dust around bearing caps, cracked seals, looseness when twisting the shaft by hand, and any play in the centre support bearing. They’ll also listen for chirps or knocks on a road test, and check the flange bolts are tight. If the joints are flogged out, Subaru’s guidance is to replace the complete propeller shaft assembly, many driveline specialists can also rebuild the shaft with serviceable circlip-style U-joints if desired.

Replacement tips a tech would follow include marking the flanges to preserve balance, supporting the shaft to avoid stressing the joints, fitting new self-locking hardware, and torquing to spec from the service manual before a final road test. Most owners will be fine having the U-joints checked at normal service intervals (about every 15,000 km), or sooner if there’s vibration, a thump on take-off, or visible rust staining around the caps. Keeping tyres matched and balanced and the diff and transmission mounts in good nick also helps prevent premature U-joint grief.

• Common symptoms: take-off shudder, highway vibration, clunk on gear engagement, visible rust dust at caps.
• Service action: inspect regularly, replace complete prop shaft or have a driveline shop rebuild if wear is found.

Popular questions

Are the 2011 Forester’s prop shaft U-joints serviceable?
From the factory, they’re sealed and not intended to be greased or replaced individually — Subaru supplies the shaft as a complete unit. Many driveline specialists in Australia and New Zealand can rebuild the original shaft with replaceable U-joints if the yokes are in good condition.

How long do the U-joints typically last?
With normal use and tyres kept matched, they often run well beyond 150,000 km. Frequent gravel roads, lifted suspension, or mismatched tyre diameters can shorten their life. Any fresh vibration, clunk, or chirp is a sign to get them checked sooner.

Could a highway-speed vibration be the U-joints or just wheel balance?
Both can cause it. If balancing the wheels doesn’t fix the shake, look to the driveline — worn U-joints or a tired centre support bearing can create a rhythmic vibration that changes with road speed. A workshop can confirm by checking for play and running the car on a hoist.