For long term spares ie 2-3 months away I may carry a bit if its more remote. for a day to 2 weeks maybe half of this list.
Air cleaner
Anti freeze 1L
Auxiliary Drive belt kit
Brake fluid 1L
Brake pads front set
Front brake pad retaining set
Brake pads rear set
Rear brake pad retaining set
Bulbs assorted
Circlips, o-rings, nuts, bolts etc.
CV joint
Cylinder head gasket (engine gasket kit)
Diff gaskets
Diff pinion seals
Drive belt
Duct tape
Electrical connectors assorted
Electrical tape
Electrical wire
Fuel filter
Fuel lifter pump
Fuses assorted
Gasket paper
Gasket sealant
Grease
Inner tube x 2
Locking wheel nut
Oil diff
Oil engine
Oil filter
Power steering fluid
Puncture repair kit
Radiator cap
Radiator hose set
Radweld
Sediment seal upper
Sediment seal lower
Shock absorber
Silicon sealant
Spare wheel complete x 3
Thermostat
Thread locking fluid
Thread tape
Transfer box seal
Universal joints
Valve caps (tyre)
Valves (tyre)
WD 40
Wheel bearing KITS
Windscreen Washer concentrate
wiper blades Front & rear