Parts for your 2007 Subaru Forester-Universal joints

2007 Subaru Forester universal joints (U-joints): fitted, what they do, and how to look after them

Yes, universal joints are relevant to a 2007 Subaru Forester. Technical sources including the Subaru Factory Service Manual for the 2007 Forester (Propeller Shaft/Driveshaft section) and Subaru’s parts catalog illustrations show a two-piece propeller shaft with a centre support bearing and non-serviceable staked U-joints at each end. The front and rear axle shafts use constant velocity (CV) joints, while the steering intermediate shaft also uses small U-joints. So, for the driveline between the transmission and rear diff, U-joints are absolutely fitted to this model.

On the 2007 Forester, the propeller shaft U-joints let the shaft transmit power to the rear differential while handling suspension movement and modest angle changes. When they’re healthy, you’ll get smooth take-offs and steady cruising with no shudder. Subaru designed the OEM Forester shaft with sealed, staked-in U-joints, which means routine greasing isn’t part of scheduled servicing and the joints aren’t intended to be replaced on their own. If a joint fails, Subaru’s official approach is replacement of the complete prop shaft assembly. Many driveline specialists can rebuild the shaft with circlip-style serviceable U-joints, but that’s an aftermarket solution.

Good servicing practice is to inspect the U-joints at every major service or around each 30,000–50,000 km. A quick underbody check for rust-coloured dust at the bearing caps, play in the joints, slung grease, or heat discolouration near the yokes is worthwhile. A road test can help: listen and feel for a metallic clunk on take-off or shifting from reverse to drive, a speed-related vibration under load (often 60–100 km/h), or a chirp/whirr that rises with road speed.

• If replacement is needed, mark the flanges so the shaft goes back in the same orientation to preserve balance.
• Inspect the centre support bearing and mount at the same time, per the FSM they work as a set.
• Use new flange bolts/nuts and torque to factory spec, recheck after a short shakedown drive.
• If going aftermarket, ask for serviceable U-joints and correct phasing of the yokes to avoid vibration.

Because the joints are sealed, there’s no greasing nipple to maintain. Keeping the underbody free of built-up mud and avoiding torn dust seals on nearby components goes a long way. For owners who do lots of corrugated roads or towing, more frequent inspections are smart. These checks align with the Subaru FSM guidance and common driveline service practice across Australia and New Zealand.

Does a 2007 Forester use U-joints or CV joints?

Both. The front and rear halfshafts use CV joints, while the propeller shaft between the gearbox and rear diff uses U-joints, plus there are small U-joints in the steering intermediate shaft.

Subaru’s 2007 Forester service manual and parts catalog show a two-piece prop shaft with staked, sealed U-joints and a centre bearing, making the U-joints part of the AWD driveline hardware.

Can the OEM Forester U-joints be greased or replaced individually?

The factory U-joints are sealed and non-greasable, and Subaru supplies the propeller shaft as a complete assembly when wear is found.

Some driveline shops can rebuild the shaft using serviceable circlip-type U-joints. That’s an aftermarket route and should be done by a specialist to maintain balance and correct phasing.

What are the common signs the U-joints need attention?

Look for a clunk when shifting from reverse to drive or taking off, a speed-related vibration under load, or a chirping/whirring noise that follows road speed.

Under the car, check for rust dust around the bearing caps, looseness when the shaft is twisted by hand (with the car safely supported), or evidence of heat and slung grease near the yokes and centre bearing.