This Hulk 4x4 free wheel hub drops onto Patrol GQ and GU Y61 front ends with a 90 mm PCD and 31T spline, so you keep proper engagement when you lock the hub for 4WD. The 6-bolt layout matches the standard AISIN pattern, so the gear lines up with factory studs and keeps the wheel turning square under load. The dial gives clear lock and free positions, handy when you swap from clay ruts to 100 km of bitumen. The hub runs an all-steel body and cap, giving solid support when each front corner can see a few hundred kg over corrugations. The 90 mm circle spreads clamping force from the 6 bolts, so the gasket sits flat and holds grease where it belongs. The 31T internal spline matches the Patrol shaft profile, which helps reduce play and knocks when you tackle rocky climbs or washouts on long Aussie trips.

• Suits Nissan Patrol GQ and GU Y61 front axles
• Direct replacement for AISIN style free wheel hubs
• 90 mm pitch circle diameter mounting face
• 31 tooth internal spline to match Patrol axle shaft
• Six-bolt hub pattern for secure clamping
• All-steel body and cap for added strength
• Manual lock and free dial on hub face
• Supplied with gasket plus bolts and washers
• Helps reduce front driveline wear when unlocked
• Suitable for touring and general 4x4 use

Q: Does this free wheel hub replace the factory AISIN hub on a Nissan Patrol GQ?

Yes, this hub is made to suit Patrol GQ front ends that originally run AISIN style hubs with a 90 mm PCD. The 31T spline and six-bolt pattern match the standard stub axle and hub face. You remove the original hub assembly and bolt this unit on in its place. Always confirm your existing hub style and bolt circle before ordering.

Q: Will this hub fit a Patrol GU Y61 with a different spline count?

No, this hub is set up specifically for a 31T spline. If your Patrol GU Y61 front axle uses a different spline count, this hub will not slide onto the shaft correctly. For safe engagement, the spline count and profile must match exactly. Check the axle or existing hub markings, or measure the spline before choosing any replacement gear.

Q: Do I need special tools to install this free wheel hub?

No special tools are listed beyond normal hand tools like sockets and a torque wrench. The hub uses six standard bolts on a 90 mm PCD, so common metric sockets usually cover the job. Correct torque on the mounting bolts helps keep the gasket sealed. Always work on a clean hub face and follow vehicle workshop procedures.

Q: Can I leave the hubs locked on sealed roads?

Yes, you can leave them locked, but the hub is intended to let you freewheel the front axle when 4WD is not required. Leaving the hub locked keeps the front diff and axles turning, which can add wear and fuel use. Unlocking the hubs on long sealed runs lets the front end coast and reduces the load on driveline components.

• Suits Nissan Patrol GQ front axle with AISIN style hubs from 1990 onwards
• Suits Nissan Patrol GU Y61 front axle with AISIN style hubs from 1990 onwards
• Requires 6-bolt front hub pattern with 90 mm PCD and 31-tooth axle spline
• Installation involves removing existing freewheel hub and refitting this hub with supplied bolts and gasket
• Manual lock and free positions are set by turning the external dial after installation