Parts for your 2004 Nissan Primera-Wheel hubs

2004 Nissan Primera wheel hubs — purpose, care and when to replace

Wheel hubs are absolutely relevant on the 2004 Nissan Primera (P12). Nissan’s factory Service Manual (P12) — Front Axle (FAX) and Rear Axle (RAX) sections — details bolt-on hub-and-bearing units front and rear, with ABS encoder rings on many variants. The Brake Control (BRC) section references the hub’s ABS signal. Nissan FAST parts catalogues and major bearing manufacturers’ fitment guides also list complete hub assemblies for the P12, confirming fitment.

On a 2004 Primera, each wheel hub is the solid mounting point for the wheel and tyre, housing a sealed bearing so the wheel spins smoothly while carrying the vehicle’s weight. The front hubs slip over the driveshafts and bolt to the steering knuckles, the rears bolt to the rear carriers. Many hubs integrate the ABS tone ring, so they don’t just hold the wheel — they also talk to the car’s stability and braking systems.

There’s no regular adjustment on these sealed units, so the smart play is inspection during routine servicing. A tech will check for play at 12 and 6 o’clock, listen for humming or growling that changes with speed, feel for heat after a road test, and scan for ABS faults. They’ll also look at the harness to each wheel speed sensor, because a damaged cable can mimic a dud hub.

When a hub is worn, expect a droning noise that gets louder on certain corners, light vibration through the cabin, uneven tyre wear, or an ABS warning. Keep driving and it can get sloppy, affect braking, and chew out tyres — not worth the punt.

Replacement is straightforward but precise. Hubs are bolt-on units, use quality parts, new hub/axle nuts where specified, and follow Nissan torque specs. Clean mating faces, align the ABS encoder correctly, and don’t bash the new hub into place. After fitting, a wheel alignment is a good idea if the knuckle bolts were loosened, and always re-torque the wheel nuts after 50–100 km. While there’s no greasing or repacking to do, keeping tyres balanced, pressures right, and suspension bushings healthy will help hubs live a long life.

• Key signs it’s time: speed-related humming, play at the wheel, ABS light, heat at the hub, or uneven tyre wear.
• Good practice: inspect at each service, fix sensor wiring early, and use proper torque on reassembly.

How do I know a Primera hub is failing?

Listen for a droning or growling that rises with speed and may change when cornering. Check for wheel play, warmth at the hub after a drive, or an ABS light. A tech can confirm by spinning each wheel off the ground and checking bearing roughness.

Do I need a wheel alignment after replacing a hub?

If the steering knuckle bolts were loosened, get an alignment. Even small shifts can tweak camber or toe and cause tyre wear. If only the axle nut and hub bolts were disturbed, alignment may not change — but it’s still wise to check.

Can I change just the bearing, or is it a full hub unit?

On most 2004 Primera P12 variants the bearing is integrated into a bolt-on hub assembly. That means replacement is typically the complete hub unit rather than pressing in a separate bearing, which improves reliability and saves time.