Parts for your 2021 Honda Cr-v-Cv boots

2021 Honda CR‑V CV boots — what they do and how to look after them

CV boots are absolutely fitted to the 2021 Honda CR‑V. Honda’s factory Service Manual for the 2017–2022 CR‑V (Driveline/Axle — Front Driveshaft) specifies inboard and outboard CV boots and their clamps during removal/installation, and Honda Genuine Parts catalogues list boot kits for the front driveshafts (and rear driveshafts on AWD models). That makes CV boots directly relevant to servicing any 2021 Honda CR‑V, whether front‑wheel drive or Real Time AWD.

On this model, each driveshaft uses constant‑velocity joints to transmit power smoothly as the suspension moves and the wheels steer. The CV boots are the flexible rubber or thermoplastic covers that hold high‑moly grease inside the joint and keep water, dust, and road grit out. Outer boots work hard because they articulate with steering, inner boots manage plunge and angle as the suspension travels. AWD variants also carry CV boots on the rear shafts.

Because Australia and New Zealand often mean hot UV, coastal air, and dusty or corrugated roads, boot material can harden and crack over time. Sensible maintenance is to inspect the CV boots at every regular service (typically 10,000–15,000 km), and sooner after gravel trips or deep water crossings.

• What to look for: fine cracking, grease weeping at the pleats, split rubber, loose or flung clamp bands, or grease sprayed around the inner rim and under‑tray.
• If a boot is torn: the joint may ingest grit rapidly. Continued driving risks clicking on turns, vibration on acceleration, and costly CV joint wear. Address promptly.

When replacement is needed, a quality boot kit should include fresh high‑moly CV grease, new stainless clamps, and the correct clips. Reusing old bands is false economy. Proper crimping tools help seal the boot, after refit, the axle nut should be tightened to the correct torque and staked as specified in the Honda manual. Where a joint has run dry, is noisy, or is heavily contaminated, replacing the complete driveshaft can be more economical than rebuilding the joint.

• Practical tips: avoid directing a pressure washer at the boots, check boot condition during tyre rotations, and on AWD models, inspect rear boots as well as the fronts.
• Service interval guidance: routine visual checks every service, proactive boot replacement is wise once age‑hardening or surface cracking appears, commonly beyond 100,000 km.

Popular questions about 2021 Honda CR‑V CV boots

How often should CV boots on a 2021 CR‑V be inspected?
They’re best checked at every scheduled service (about 10,000–15,000 km) and after harsh use such as gravel touring or water crossings. Hot sun, coastal air, and dust in AU/NZ can age the rubber faster, so regular looks under the vehicle pay off.

Can a split CV boot be repaired or does it need replacement?
A split boot is typically replaced, not repaired. Universal “split” boots are a stop‑gap at best. Once torn, the joint may already be contaminated, if there’s clicking or roughness, a complete driveshaft assembly can be the smarter fix.

What are the symptoms of a failing CV joint on a 2021 CR‑V?
Common signs include clicking or popping on full lock (outer joint), shudder or vibration on hard acceleration, and noticeable grease sling inside the wheel. If these appear, a technician should inspect boots and joints promptly to prevent further damage.