Parts for your 2018 Subaru Forester-Cv boots

2018 Subaru Forester CV boots: what they do and when to replace them

Technical references confirm that CV boots are absolutely relevant on a 2018 Subaru Forester. The Subaru Factory Service Manual for the 2018 Forester (Drive Shaft section) shows constant velocity (CV) joints on the front and rear drive shafts, each protected by rubber boots. The Subaru electronic parts catalogue (FAST) also lists CV boot kits for this model year and platform. That means CV boots are a standard, fitted component on this vehicle.

On a 2018 Forester, those CV boots are the flexible rubber bellows that seal grease around each CV joint and keep out water, dust, and road grit. With full-time AWD and plenty of steering and suspension movement, the joints rely on that grease and intact boots to stay smooth and quiet. When a boot splits, centrifugal force can fling grease onto the wheel arch or suspension, and contaminants creep in, wearing the joint quickly.

For regular servicing, it’s smart for owners to have the CV boots visually checked at each service or at least every 10,000–15,000 km, and after gravel-road or beach use. A technician will look for cracks, perishing, loose clamps, and any sign of thrown grease. Sun, heat, and off-road flex can age the rubber faster in Aussie and Kiwi conditions.

If a boot is damaged but the joint is still quiet and free of play, a boot-only replacement can save the axle. Best practice is to clean the joint thoroughly, pack the correct molybdenum CV grease, and install new clamps with the proper crimp tool. If the joint has run dry or is clicking on turns, a complete driveshaft assembly may be the better call. After any front-end driveshaft work, torque specs for the axle nut and hub fasteners matter, a shop will also recheck for leaks and road-test for vibration.

Owners can help the cause by rinsing underbody components after sand or mud driving and avoiding aggressive steering lock manoeuvres when a clicking noise first appears. Early attention to a small split boot can prevent a much pricier CV joint or axle replacement later.

• Watch for these signs: grease spatters near the inner wheel, rubber cracking, clicking on tight turns, shudder under load.
• Service tip: request a CV boot check during tyre rotations and brake inspections.

Popular questions about 2018 Subaru Forester CV boots

How often should CV boots be inspected on a 2018 Forester?
Most workshops check them at every scheduled service or around every 10,000–15,000 km, and after heavy off-road or beach driving. Frequent visual checks catch small splits before they become joint damage.

Can a torn CV boot be replaced without changing the whole axle?
Yes—if the joint hasn’t run dry or started clicking. A boot kit with the correct grease and clamps can restore protection. If there’s noise, corrosion, or excessive play, a full driveshaft replacement is usually the safer, longer-lasting fix.

Is it safe to drive with a split CV boot?
It’s not recommended. A short trip to a workshop might be fine, but continued driving lets grease escape and grit enter, which can quickly wear the CV joint. Prompt attention saves the joint and reduces overall repair cost.