Parts for your 2015 Subaru Forester-Ball joints

2015 Subaru Forester Ball Joints

Technical sources confirm ball joints are absolutely relevant on the 2015 Subaru Forester (SJ series). The Subaru Factory Service Manual for the 2015 Forester (Chassis/Front Suspension) specifies a front lower arm ball joint linking the steering knuckle to the lower control arm. Subaru’s Electronic Parts Catalogue for SJ Forester lists the “Front Arm Ball Joint” (commonly referenced as Subaru P/N 20206AJ000) for this model. Reputable aftermarket catalogues also list direct-fit front lower ball joints for 2014–2018 Forester. The rear multi-link suspension uses arms with bushings rather than serviceable rear ball joints.

On a 2015 Forester, the front lower ball joints let the front wheels move up and down with the suspension while still steering smoothly. Think of them as tough little pivot points between the lower control arm and the steering knuckle. They’re sealed and don’t need greasing, but they do wear over time—especially with rough roads, off‑bitumen touring, or big potholes that are all too common across Australia and New Zealand.

As part of regular servicing, it’s smart to have the ball joint dust boots checked for tears or leaks and to test for any play. Tell‑tale signs of a tired ball joint include clunks over bumps, vague steering feel, tyre wear on the inner or outer edges, or a steering wheel that doesn’t feel dead‑set straight. If there’s measurable play or the boot’s split, replacement is the go—these joints aren’t repairable.

• Typical symptoms to watch: knocking on rough roads, steering wander, uneven tyre wear, and a creak when turning slowly.
• Inspection tip: with the front safely lifted, a trained tech will check for looseness at the joint and boot condition, then confirm against the manual’s limits.

When replacing, quality matters—OE‑equivalent parts and new pinch bolts are recommended. The joint is secured to the knuckle and control arm, proper tools (a separator/puller) prevent damage to surrounding components. Everything should be torqued to the service manual specs and followed up with a wheel alignment. It’s common practice to replace ball joints in pairs (left and right) so steering feel and tyre wear stay consistent. Because failure can affect wheel control, a noisy or loose ball joint is a fix‑now item, not a “wait and see”.

For Foresters that see gravel, corrugations, or towing duties, consider shorter inspection intervals—every 10,000–15,000 km—so any wear is picked up before it becomes a safety issue.

Popular questions about 2015 Subaru Forester ball joints

How long do the ball joints usually last?
With normal city and highway driving, many Forester ball joints run well past 120,000–160,000 km. Rough roads, heavy loads, and bigger wheels/tyres can shorten that. Regular inspections at each service help catch wear early.

Should both front ball joints be replaced at the same time?
It’s recommended. If one side has worn out, the other is often not far behind. Replacing in pairs keeps steering feel balanced and helps avoid uneven tyre wear.

Do you need a wheel alignment after replacing a ball joint?
Yes. Any time the knuckle or control arm connection is disturbed, a wheel alignment is wise. It ensures proper tyre wear, straight‑ahead steering, and the best road manners.