OEM parts categories for 2021 Audi S5: 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, Fuel Injection, Fuel Supply, Fuel System Components, Intake Manifold, Intercooler, Sonar System, Throttle Body, Turbocharger) | Belts & Cooling (Belts & Pulleys, Cooling System, Radiator, Water Pump, Cooling Fan, Hoses & Lines, Intercooler, Radiator & Components, Trans Oil Cooler, Water Pump) | Body & Hardware (Aperture Panel, Uniside, Bumper & Components - Front, Bumper & Components - Rear, Cluster & Switches, Instrument Panel, Console, Cowl, Dash Panel Components, Door & Components, Exterior Trim, Ducts, Electrical Components - Front Bumper, Electrical Components - Rear Bumper, Fender & Components, Floor & Rails, Frame & Components - Convertible Top, Front Door, Front Door Glass & Hardware, Front Seat Components, Glass - Windshield, Glass & Hardware - Back Glass, Glass & Hardware - Quarter Panel, Glove Box, Grille & Components, Hinge Pillar, Lock Pillar, Rocker Panel, Hood & Components, Information Labels, Inner Structure - Quarter Panel, Jack & Components, Lock & Hardware, Lower Instrument Panel, Motor & Components, Outside Mirrors, Quarter Panel & Components, Exterior Trim, Radiator Support, Rear Body, Rear Door, Rear Floor & Rails, Rear Seat Components, Roof & Components, Seat Belt, Sound System, Splash Shields, Storage Compartment Cover, Stowage Compartment, Structural Components & Rails, Sunroof, Top Cover & Components, Trunk, Trunk Lid & Components, Uniside, Upper Instrument Panel, Windshield Header & Components, Wiper & Washer Components) | Brakes (Anti-Lock Brakes, Brake Components, Front Brakes, Hydraulic System, Parking Brake, Rear Brakes, Stability Control) | Charging & Starting (Alternator, Battery, Starter) | Driveline & Axles (Axle Shafts & Joints, Differential, Drive Axles) | Electrical (ABS Components, Air Bag Components, Alarm System, Antenna & Radio, Anti-Theft Components, Communication System Components, Convertible Top, Electrical Components, Front Door, Front Seat Belts, Fuel Door, Fuse & Relay, Head-Up Display Components, Heated Seats, Horn, Ignition Lock, Ignition System, Instruments & Gauges, Keyless Entry Components, Lane Departure Warning, Mirrors, Navigation System, Parking Aid, Power Seats, Powertrain Control, Rear Door, Rear Seat Belts, Ride Control, Roll Bar, Senders, Starter, Sunroof, Switches, Washer Components, Wipers, Wiring Harness) | Emission Control & Exhaust (Emission Components, Exhaust Components, Exhaust Manifold, Heat Shields) | Engine (Engine & Trans Mounting, Engine Appearance Cover, Engine Parts, Mounts, Cylinder Head & Valves, Variable Valve Timing, Oil Cooler, Oil Pan, Oil Pump, Crankshaft & Bearings, Pistons, Rings & Bearings, Transaxle Parts, Turbocharger & Components, Valve & Timing Covers) | Headlights & Lighting (Bulbs, Headlamp Components, Headlamps, Headlamp Washers/Wipers, High Mount Lamps, License Lamps, Tail Lamps) | Interior & Exterior Trim (Door & Components, Exterior Trim, Exterior Trim - Fender, Exterior Trim - Pillars, Exterior Trim - Roof, Exterior Trim - Trunk, Interior Trim - Door, Interior Trim - Pillars, Interior Trim - Quarter Panels, Interior Trim - Rear Body, Interior Trim - Roof, Interior Trim - Top, Interior Trim - Trunk, Quarter Panel & Components, Exterior Trim) | Maintenance & Lubrication (Automatic Transmission, Belts & Pulleys, Filters) | Steering (Steering Column & Wheel, Steering Gear & Linkage) | Suspension (Axle & Differential - Rear, Drive Axles - Front, Drive Axles - Rear, Drive Shaft - Rear, Front Suspension Components, Rear Suspension, Shocks & Components - Rear, Stabilizer Bar & Components - Front, Stabilizer Bar & Components - Rear, Struts & Components - Front, Suspension Components, Lower Control Arm, Upper Control Arm, Ride Control, Stabilizer Bar, Suspension Mounting - Front, Suspension Mounting - Rear, Wheels, Covers & Trim) | Transmission (Automatic Transmission, Gear Shift Control - AT)