Parts for your 2019 Mitsubishi Asx-Rack boots

2019 Mitsubishi ASX rack boots: what they do and when to replace them

Yes, rack boots are relevant to the 2019 Mitsubishi ASX. Technical references including the Mitsubishi Motors Service Manual (ASX/RVR/Outlander Sport, Group 37 Steering, 2018–2020 editions), the Mitsubishi ASA electronic parts catalogue for GA-series ASX, and independent workshop data (Autodata/Haynes coverage for 2011–2019 Outlander Sport/ASX) all show a rack-and-pinion steering assembly with protective bellows—commonly called rack boots or steering rack gaiters—at each end of the rack.

On the 2019 ASX, the steering is electric power assisted, but it’s still a rack-and-pinion design. The rack boots seal the ends of the steering rack and the inner tie-rod joints, keeping water, grit, and road grime out while holding the correct grease in. That protection helps the inner joints, rack bar, and seals live a long life, keeps the steering feel tight, and avoids premature wear that can lead to play, knocking, or uneven tyre wear. Because there’s no hydraulic fluid on this model’s EPS setup, a torn boot won’t cause a fluid leak—but it can still let contamination in and quickly chew out costly parts.

As part of regular servicing, it’s smart to have the rack boots checked at each service interval or at least every 10,000–15,000 kilometres. Coastal conditions, gravel roads, and extreme heat can age the rubber faster, so NZ and Aussie cars that see those conditions deserve an extra look before a WOF or roadworthy.

• Tell-tales a boot needs attention: visible splits or perishing, loose or missing clamps, grease sling on the inner wheel or control arm, new steering play or clunks, and abnormal inner-edge tyre wear.
• Good practice when replacing: use quality one-piece boots and proper clamps (not cable ties), refresh the specified grease for the inner joint, and fit both sides if one has failed due to age.

Replacement involves removing the outer tie-rod end, sliding off the old gaiter, cleaning, greasing as specified, and installing the new boot with correct clamps. Because the tie-rod end is disturbed, a wheel alignment is recommended afterwards, even if the threads were carefully marked. Most workshops will knock this over in about 1–2 hours. Sticking with OE-spec or reputable aftermarket parts and following the torque specs in the Mitsubishi service manual keeps the ASX’s steering feel crisp and helps avoid a WOF or roadworthy fail.

Popular questions about 2019 Mitsubishi ASX rack boots

How often should rack boots be replaced on a 2019 ASX?
There isn’t a fixed change interval, instead, they should be inspected at every service. In typical Aussie and NZ use, many last well over 100,000 km, but once cracks or tears appear, replacement is due straight away to protect the inner tie rods and rack.

Do rack boots affect wheel alignment?
The boots themselves don’t, but replacing them usually means removing the outer tie-rod end. Even if the locknut position is marked, a post-repair wheel alignment is recommended to keep tyre wear even and the steering tracking straight.

Can a split rack boot be temporarily taped?
Tape or split “quick-fit” gaiters are only short-term patch-ups and can trap dirt. For the 2019 ASX, a proper one-piece boot with the right clamps and grease is the correct fix and will save the rack and inner joints from premature wear.