Parts for your 2021 Mitsubishi Asx-Universal joints

2021 Mitsubishi ASX universal joints — what’s fitted and what that means for servicing

Technical documentation confirms universal joints are relevant on some 2021 Mitsubishi ASX models, but not all. The Mitsubishi Motors Service Manual for ASX/RVR/Outlander Sport (2019–2021) shows that front‑wheel‑drive (2WD) variants use constant velocity (CV) joints on the front driveshafts (Front Axle group), with no driveline universal joints. All‑wheel‑drive (AWD/AWC) variants add a propeller shaft running to the rear differential, the Propeller Shaft section (Group 22A) specifies universal joints and a centre bearing as part of that assembly. Mitsubishi parts catalogues for AWD ASX also list a complete propeller shaft assembly incorporating non‑greasable U‑joints.

For 2WD ASX owners: universal joints aren’t used in the driveline because CV joints better manage the large steering and suspension angles of front driveshafts. The 2WD layout has no rear propeller shaft, so there’s nowhere a cardan‑type U‑joint would be required. Routine servicing instead focuses on CV boots and joints.

For AWD ASX owners, universal joints are part of the propeller shaft and play a key role in keeping the drive smooth and reliable. A U‑joint allows the prop shaft to transmit torque between components that aren’t perfectly in line, coping with body movement and suspension travel without binding. When healthy, they help prevent vibration, shudder and noise as the vehicle transfers power front to rear under acceleration and over uneven roads.

Servicing advice for AWD ASX universal joints is straightforward. During regular services, a quick underbody inspection for play at the U‑joints and centre bearing is smart practice. Because the OEM joints are typically sealed (non‑greasable), there’s no periodic greasing, the focus is on condition. Tell‑tale signs to watch for include a clunk when shifting from reverse to drive, a rhythmic vibration under load at highway speeds, rust‑coloured dust around the bearing caps, or a chirp/creak at low speed. If any of these crop up, the prop shaft should be removed and checked on the bench.

On many late‑model Mitsubishis, the U‑joints are staked into the yokes, meaning individual joint replacement isn’t part of the factory procedure. Workshops will either fit a complete new or remanufactured propeller shaft, or have a driveline specialist rebuild the original with serviceable circlip‑type joints and balance the assembly. Bolts at the flanges should be reinstalled with threadlocker and tightened to the workshop‑manual torque figures, and the centre bearing alignment should be set so the shaft runs true. After replacement, a road test for any residual vibration at different speeds is essential. Treated this way, the AWD ASX prop shaft U‑joints routinely deliver many hundreds of thousands of kilometres of quiet, drama‑free operation on Aussie and Kiwi roads.

• Key symptoms: clunk on take‑off, highway vibration, chirp/creak at low speed, visible red dust at caps
• Service action: inspect for play, check centre bearing, replace or rebuild prop shaft if wear is found
• Notes: sealed joints, no routine greasing, follow factory torque specs and alignment procedure

Popular questions about 2021 Mitsubishi ASX universal joints

Does a 2WD 2021 ASX have universal joints?
2WD ASX models don’t use driveline U‑joints. They rely on CV joints on the front driveshafts and have no rear propeller shaft, so there’s no need for a cardan‑type joint. Routine checks focus on CV boots and front axle components instead.

How long do AWD ASX universal joints last?
With sealed, factory U‑joints and a correctly aligned prop shaft, many AWD ASX vehicles run well past 150,000–250,000 km without issue. Lifespan depends on use: frequent towing, off‑bitumen driving, or water/mud exposure can shorten service life. Vibration or clunks are the cue to inspect early.

Can the U‑joints be greased or replaced individually?
Factory joints are typically sealed and staked, so there’s no greasing point and individual replacement isn’t specified by Mitsubishi. Workshops will usually fit a complete new/remanufactured propeller shaft, or have a driveline specialist rebuild the original with serviceable joints and then balance it.