Parts for your 2018 Subaru Exiga-Wheel hubs

2018 Subaru Exiga wheel hubs: what they do and when to sort them out

Based on technical references including the Subaru FAST parts catalogue for the Exiga/Crossover 7 platform (YA series), the Subaru Workshop Manual sections for Front/Rear Axle and Wheel Bearing (hub unit), and hub unit supplier catalogues from NTN/NSK/SKF covering 2015–2018 Subaru Crossover 7 (Exiga-based), this vehicle is fitted with bolt-in wheel hub assemblies front and rear. So wheelhubs are absolutely relevant to the 2018 Subaru Exiga, and they’re a routine service item when worn.

On the 2018 Subaru Exiga, the wheel hub assembly (often called a hub unit or wheelhubs) is a sealed bearing-and-hub module that the wheel bolts to and the driveshaft runs through. It supports the vehicle’s weight, keeps the wheel rotating smoothly, and houses the ABS encoder ring for the wheel speed sensor. Being sealed, it’s maintenance-free in terms of lubrication, but once the bearing wears, the whole hub unit is replaced.

For owners across Australia and New Zealand, the job of the Exiga’s wheelhubs is simple: keep things rolling straight and quiet. When they start to go, they usually warn you with a steady humming that changes with speed, a grumble on corners, vague steering, or an ABS light if the encoder is damaged. Left too long, a failing hub can cause uneven tyre wear, heat at the hub, or even play at the wheel.

Replacement is straightforward for a trained tech: it’s a bolt-in unit, so there’s no pressing bearings in and out of the knuckle. Best practice is to use quality OEM-equivalent hubs (common Subaru suppliers include NTN/NSK), replace the axle nut, and torque everything to the workshop manual spec. If you’re coastal or the vehicle’s seen outback roads, expect some corrosion on the mating surfaces—clean and anti-seize appropriately. An alignment check afterwards is smart if any suspension bolts were disturbed.

• Service cues to book in:
  • Speed-related humming or droning that gets louder on gentle lane changes
  • ABS light with no obvious sensor damage
  • Detectable wheel play when rocked at 12 and 6 o’clock
  • Heat or a “hot brake” smell at one corner after a drive
• Owner tips:
  • Rotate tyres regularly, uneven loads can mask early hub noise
  • Avoid pressure-washing directly at wheel speed sensors and hub faces
  • At every service or WOF/roadworthy, ask for a quick wheel-play and noise check

There’s no fixed kilometre interval for 2018subaruexiga wheelhubs, many last well beyond 150,000 km. Harsh roads, bigger wheels/tyres, or frequent kerb knocks can shorten their life. If in doubt, a quick road test and hub spin with the car safely raised will tell the story.

Popular questions about 2018 Subaru Exiga wheelhubs

What are the signs my 2018 Subaru Exiga wheel hub is failing?

Common giveaways include a steady humming that rises with speed, a growl that changes when turning gently left or right, and a faint vibration through the seat or floor. You might also notice uneven tyre wear at the affected corner.

On ABS-equipped hubs, damage to the encoder ring can trigger an ABS light. With the wheel off the ground, any roughness when spinning by hand or detectable play when rocking the wheel usually points to a worn hub unit.

How long do wheel hubs last on a 2018 Subaru Exiga?

With normal driving and good tyres, many Exiga hub units run 150,000–250,000 km. Sealed bearings don’t need greasing, so lifespan mostly comes down to load, road quality, and impacts like potholes or kerbs.

Coastal environments in AU/NZ can introduce corrosion around the hub face, and heavy loads or bigger wheels can shorten bearing life. Regular checks at service time help catch wear early.

Can I drive with a noisy wheel hub on my Exiga?

Short term, gentle driving may be possible, but it’s not ideal. As wear progresses, heat builds and play increases, which can affect braking and ABS performance and chew out tyres.

Book it in sooner rather than later. Replacing a single noisy hub now is cheaper and safer than waiting until it damages the sensor, rotor splash shield, or knuckle.