Parts for your 2018 Mitsubishi Asx-Universal joints

2018 Mitsubishi ASX universal joints — what’s fitted and how to look after them

Based on technical sources — the Mitsubishi Motors Factory Service Manual for the ASX/Outlander Sport (RVR) 2018 model year, Group 27 Propeller Shaft, and the Mitsubishi ASA Global Electronic Parts Catalogue (EPC) for GA2W/GA1W models — universal joints are relevant only to AWD (4WD) versions of the 2018 Mitsubishi ASX. Those AWD models use a two-piece propeller shaft running from the transfer case to the rear differential, with universal (cardan) joints and a centre support bearing. Front-wheel-drive (2WD) ASX models don’t have a prop shaft at all, their front drive shafts use constant velocity (CV) joints instead, so universal joints aren’t used on the 2WD variant.

On AWD ASX models, the universal joints sit at each end of the propeller shaft and allow the shaft to transmit drive while coping with angle changes as the body and rear suspension move. They’re essentially the flexible link that keeps things smooth as power heads rearward. When the joints start to wear, the driver will often feel a vibration under load (commonly between 60–100 km/h), notice a dull clunk on take-off or when shifting from Drive to Reverse, or hear a chirp/squeak at low speed that changes with road speed.

For routine servicing, it’s worth a quick visual and hands-on check at each service or at least every 20,000 km: look for torn dust seals, rust bleed around the bearing caps, and feel for any free play or notchiness when the shaft is rotated by hand. Most factory-fitted joints on the ASX are sealed-for-life (non-greaseable), so the focus is on inspection rather than lubrication.

• If play or roughness is found, plan replacement sooner rather than later to avoid damaging the centre bearing or rear diff pinion.
• Mitsubishi commonly supplies the propeller shaft as a complete assembly, however, driveline specialists can often press in correctly sized replacement U-joints and re-balance the shaft.
• Mark the flanges before removal, keep the phasing/orientation the same, and always torque the flange bolts to the workshop manual spec.
• After any U-joint work, a road test for vibration and a check of the centre support bearing is smart practice.

Driving on corrugated roads, towing, beach work, or frequent short trips can shorten U-joint life. Keeping the underbody clean, addressing any shaft vibrations early, and using quality parts will help the ASX’s driveline stay silky for years.

Popular questions about 2018 Mitsubishi ASX universal joints

Do 2WD 2018 ASX models have universal joints?
No. The front-wheel-drive ASX uses CV joints on the front shafts and has no rear propeller shaft, so there are no universal joints to service. Universal joints apply to AWD models only, where a prop shaft links the transfer case to the rear diff.

How long do universal joints last on an AWD ASX?
It varies with use, but many see 100,000–200,000 km before attention. Beach runs, corrugations, or lifted suspensions can shorten that. If there’s vibration on throttle, a take-up clunk, or a rhythmic squeak that speeds up with the car, get them checked promptly.

Can the U-joints be replaced separately, or is a whole shaft needed?
Mitsubishi often supplies the propeller shaft as a complete unit. That said, good driveline shops can usually replace the U-joints and re-balance the shaft. Whichever route you choose, correct phasing and torque settings are critical to avoid NVH issues.