OEM parts categories for 2020 Audi A3 Quattro: A/C & Heating (A/C & Heater Control Units, A/C Condenser, Compressor & Lines, A/C Evaporator & Heater Components, Air Conditioner, Blower Motor & Fan, Heater Core & Control Valve, HVAC Case, Switches & Sensors) | Air & Fuel Delivery (Air Intake, Cruise Control, Fuel Injection, Fuel Supply, Fuel System Components, Intake Manifold, Intercooler, Throttle Body, Turbocharger) | Belts & Cooling (Belts & Pulleys, Cooling System, Radiator, Water Pump, Cooling Fan, Hoses & Lines, Intercooler, Radiator & Components, Water Pump) | Body & Hardware (Aperture Panel, Hinge Pillar, Uniside, Bumper & Components - Front, Bumper & Components - Rear, Center Pillar & Rocker, Cluster & Switches, Instrument Panel, Console, Cowl, Dash Panel Components, Door & Components, Ducts, Fender & Components, Floor & Rails, Front Door, Front Door Glass & Hardware, Front Seat Components, Glass & Hardware - Back Glass, Glass & Hardware - Quarter Panel, Glass, Reveal Moldings, Glove Box, Grille & Components, Hood & Components, Information Labels, Inner Structure - Quarter Panel, Jack & Components, Lock & Hardware, Outside Mirrors, Quarter Panel & Components, Radiator Support, Rear Body, Rear Door, Rear Floor & Rails, Rear Seat Components, Rear Spoiler, Roof & Components, Seat Belt, Sound System, Splash Shields, Structural Components & Rails, Sunroof, Tracks & Components, Trunk, Trunk Lid & Components, Wiper & Washer Components) | Brakes (Anti-Lock Brakes, Brake Components, Front Brakes, Hydraulic System, Parking Brake, Rear Brakes) | Charging & Starting (Alternator, Battery, Starter) | Driveline & Axles (Axle Shafts & Joints, Drive Axles, Rear Axle, Axle Shafts & Joints, Differential, Drive Axles, Propeller Shaft) | Electrical (ABS Components, Air Bag Components, Alarm System, Antenna & Radio, Anti-Theft Components, Cruise Control System, Electrical Components, Front Door, Front Seat Belts, Fuel Door, Fuse & Relay, Heated Seats, Horn, Ignition Lock, Ignition System, Instruments & Gauges, Keyless Entry Components, Lane Departure Warning, Lumbar Control Seats, Mirrors, Navigation System, Parking Aid, Power Seats, Powertrain Control, Rear Door, Rear Seat Belts, Seat Belt, Senders, Starter, Sunroof, Switches, Tire Pressure Monitoring, Washer Components, Wipers, Wiring Harness) | Emission Control & Exhaust (A.I.R. System, Emission Components, Exhaust Components, Exhaust Manifold) | Engine (Engine & Trans Mounting, Engine Appearance Cover, Engine Parts, Mounts, Cylinder Head & Valves, Camshaft & Timing, Oil Cooler, Oil Pan, Oil Pump, Balance Shafts, Crankshaft & Bearings, Pistons, Rings & Bearings, Transaxle Parts, Turbocharger & Components) | Headlights & Lighting (Backup Lamps, Bulbs, Headlamp Components, Headlamps, High Mount Lamps, License Lamps, Tail Lamps) | Interior & Exterior Trim (Exterior Trim - Fender, Exterior Trim - Front Door, Exterior Trim - Pillars, Exterior Trim - Quarter Panel, Exterior Trim - Rear Door, Exterior Trim - Trunk, Interior Trim - Front Door, Interior Trim - Pillars, Interior Trim - Quarter Panels, Interior Trim - Rear Body, Interior Trim - Rear Door, Interior Trim - Roof, Interior Trim - Trunk) | Maintenance & Lubrication (Automatic Transmission, Belts & Pulleys, Filters) | Steering (Steering Column & Wheel, Steering Gear & Linkage, Shroud, Switches & Levers) | Suspension (Axle & Differential - Rear, Drive Axles - Front, Drive Axles - Rear, Drive Shaft - Rear, Front Suspension Components, Rear Suspension, Shocks & Components - Rear, Stabilizer Bar & Components - Rear, Struts & Components - Front, Suspension Components, Lower Control Arm, Stabilizer Bar, Suspension Mounting - Front, Suspension Mounting - Rear, Wheels, Covers & Trim) | Transmission (Automatic Transmission, Gear Shift Control - AT)