OEM parts categories for 1992 Audi S4: A/C & Heating (A/C & Heater Control Units, A/C Condenser, Compressor & Lines, A/C Evaporator Components, Air Conditioner & Heater Components, Automatic Temperature Controls, Blower Motor & Fan, Heater Core & Control Valve, Hoses & Lines) | Air & Fuel Delivery (Air Intake, Cruise Control System, Fuel Injection, Fuel Supply, Fuel System Components, Intake Manifold, Intercooler, Turbocharger) | Belts & Cooling (Belts & Pulleys, Cooling System, Radiator, Water Pump, Cooling Fan, Hoses, Lines & Pipes, Radiator & Components, Water Pump) | Body & Hardware (Center Console, Center Pillar, Cowl, Door & Components, Fender & Components, Floor, Front Bumper, Front Door, Front Door - Glass & Hardware, Front Door - Lock & Hardware, Front Seat Components, Grille & Components, Hood & Components, Information Labels, Inner Structure - Quarter Panel, Instrument Panel, Outside Mirrors, Pillars, Rocker & Floor - Floor & Rails, Quarter Panel & Components, Radiator Support, Rear Body, Rear Body - Floor & Rails, Rear Bumper, Rear Door, Rear Door - Glass & Hardware, Rear Door - Lock & Hardware, Reveal Moldings, Rocker Panel, Roof & Components, Sound System, Structural Components & Rails, Sunroof, Trunk, Trunk Lid, Windshield Glass, Wiper & Washer Components) | Brakes (Anti-Lock Brakes, Brake Components, Front Brakes, Hydraulic System, Parking Brake, Rear Brakes, Traction Control Components) | Charging & Starting (Alternator, Battery, Headlamps, Headlamp Washers/Wipers, Bulbs, Flashers, Ignition System, Ignition Lock, Anti-Theft Components, Supplemental Restraint System, Antenna & Radio, Battery, Door, Gauges, Heated Seats, Horn, Instruments & Gauges, Mirrors, Powertrain Control, Senders, Sunroof, Switches, Trunk, Window Defroster, Wipers, Starter) | Driveline & Axles (Front Axle Shafts & Joints, Drive Axles, Rear Axle, Axle Shafts & Joints, Differential, Propeller Shaft) | Electrical (ABS Components, Air Bag Components, Antenna & Radio, Cruise Control System, Electrical Components, Front Seat Belts, Rear Seat Belts, Headlamps, Headlamp Washers/Wipers, Bulbs, Flashers, Ignition System, Ignition Lock, Anti-Theft Components, Supplemental Restraint System, Antenna & Radio, Battery, Door, Gauges, Heated Seats, Horn, Instruments & Gauges, Mirrors, Powertrain Control, Senders, Sunroof, Switches, Trunk, Window Defroster, Wipers, Horn, Ignition System) | Emission Control & Exhaust (EGR System, Emission Components, Exhaust Components) | Engine (Engine & Trans Mounting, Engine Parts, Mounts, Cylinder Head & Valves, Camshaft & Timing, Oil Pan, Oil Pump, Crankshaft & Bearings, Pistons, Rings & Bearings, Intercooler, Turbocharger) | Headlights & Lighting (Fog Lamps, Headlamps, Headlamps, Headlamp Washers/Wipers, Bulbs, Flashers, Ignition System, Ignition Lock, Anti-Theft Components, Supplemental Restraint System, Antenna & Radio, Battery, Door, Gauges, Heated Seats, Horn, Instruments & Gauges, Mirrors, Powertrain Control, Senders, Sunroof, Switches, Trunk, Window Defroster, Wipers, High Mount Lamps, License Lamps, Side Marker Lamps, Tail Lamps) | Interior & Exterior Trim (Exterior Trim - Fender, Interior Trim - Front Door, Interior Trim - Pillars, Rocker & Floor, Interior Trim - Rear Body, Interior Trim - Rear Door, Interior Trim - Roof, Interior Trim - Trunk Lid) | Maintenance & Lubrication (Automatic Transmission, Filters) | Steering (P/S Pump & Hoses, Steering Gear & Linkage, Steering Column, Steering Wheel) | Suspension (Drive Axles - Front, Drive Axles - Rear, Front Suspension Components, Lower Control Arm, Stabilizer Bar, Rear Axle, Stabilizer Bar, Suspension Components, Shocks & Components - Front, Shocks & Components - Rear, Wheels & Trim) | Transmission (Clutch & Flywheel, Hydraulic System)