Parts for your 2021 Mitsubishi Asx-Cv boots

2021 Mitsubishi ASX CV boots: what they do and when to replace them

Yes, the 2021 Mitsubishi ASX uses CV boots. Mitsubishi’s service information for the ASX/RVR/Outlander Sport (front axle section) and the Mitsubishi parts catalogue both show constant‑velocity (CV) joints with protective rubber boots on the front driveshafts. On AWD models, there are CV boots on the rear drive axles as well. So CV boots are absolutely relevant to servicing a 2021 ASX.

On this model, each CV boot is a flexible rubber or TPE sleeve that seals grease inside the CV joint and keeps water, grit, and road grime out. That clean, packed grease is what lets the joint articulate smoothly while the wheels steer and the suspension moves. Once a boot cracks or tears, grease flings out, contamination gets in, and the joint can wear fast—leading to that classic clicking on turns and, eventually, a pricey axle or joint replacement.

For day‑to‑day care, it’s smart to have the CV boots inspected at every routine service (roughly every 10,000–15,000 km, or at least yearly). A quick look behind the front wheels for thrown grease on the inner rim, under‑guard or around the lower arm can catch issues early. Light surface checking isn’t unusual with age, but splits, weeping grease, loose clamps, or a boot that’s gone hard and shiny means it’s time for action.

• If the boot’s torn but the joint is still quiet and clean, a quality reboot kit (boot, clamps, grease) can save the day.
• If there’s clicking, rust‑coloured grease, or noticeable play, the joint—or sometimes the whole shaft—should be replaced.
• FWD ASX: focus on the two front boots (inner and outer). AWD ASX: add the rear axle boots to the inspection list.
• After off‑road use, beach runs, or flood driving, check boots sooner, sand and salt are boot killers.

Good practice on a 2021 ASX is to fit OEM‑quality boots with the correct clamp style and fresh specified grease, clean the joint meticulously if reusing it, and ensure clamp tension is spot‑on to avoid sling or leaks. A proper road test afterwards—full lock both ways, low‑speed manoeuvres—helps confirm the fix. It’s a small bit of preventative maintenance that keeps the driveline quiet and the kilometres rolling without drama.

Do all 2021 ASX models have rear CV boots?

Front‑wheel‑drive ASX models only have CV boots on the front driveshafts. All‑wheel‑drive variants also have CV boots on the rear axles. If unsure, check the vehicle’s build plate or driveline layout, a quick visual under the rear confirms boots on AWD cars.

How often should the CV boots be inspected on a 2021 ASX?

Have them checked at every regular service (about 10,000–15,000 km) or at least annually. If the vehicle sees gravel roads, beach work, or heavy city stop‑start, inspect more frequently. Early detection of small cracks or loose clamps prevents joint damage.

Can a torn CV boot be repaired, or is a new shaft needed?

If the tear is recent and the joint hasn’t clicked or ingested grit, a reboot kit with fresh grease and clamps usually does the trick. If there’s noise, pitting, or contaminated grease, replacing the joint—or the complete shaft—provides a longer‑term fix.