OEM parts categories for 2012 Audi A4: A C Compressor (A C Compressor) | A C Condenser (A C Condenser) | A/C & Heating (A/C & Heater Control Units, A/C Condenser, Compressor & Lines, A/C Evaporator Components, Air Conditioner, Automatic Temperature Controls, Blower Motor & Fan, Heater Core & Control Valve, HVAC Case, Switches & Sensors) | Air & Fuel Delivery (Air Intake, Cruise Control System, Fuel Injection, Fuel Supply, Fuel System Components, Intake Manifold, Intercooler, Throttle Body, Turbocharger) | Aperture Panel (Aperture Panel) | Balance Shafts (Balance Shafts) | Belts & Cooling (Belts & Pulleys, Cooling System, Radiator, Water Pump, Cooling Fan, Hoses, Lines & Pipes, Intercooler, Radiator & Components, Trans Oil Cooler Lines, Water Pump) | Belts Pulleys Belts (Belts Pulleys Belts) | Blower Motor Fan (Blower Motor Fan) | Body & Hardware (Aperture Panel, Uniside, Back Glass, Center Pillar & Rocker, Cluster & Switches, Instrument Panel, Console, Cowl, Dash Panel Components, Ducts, Fender & Components, Front Bumper, Front Door, Front Door - Glass & Hardware, Front Door - Lock & Hardware, Front Seat Components, Glove Box, Grille & Components, Hinge Pillar, Hood & Components, Information Labels, Inner Structure - Quarter Panel, Jack & Components, Lift Gate, Navigation System Components, Outside Mirrors, Pillars, Rocker & Floor - Floor & Rails, Pillars, Rocker & Floor - Under Cover & Splash Shields, Quarter Panel - Glass & Hardware, Quarter Panel & Components, Radiator Support, Rear Body, Rear Body - Floor & Rails, Rear Body & Floor - Under Cover & Splash Shields, Rear Bumper, Rear Door, Rear Door - Glass & Hardware, Rear Door - Lock & Hardware, Rear Seat Components, Rear Spoiler, Roof & Components, Seat Belt, Sound System, Splash Shields, Structural Components & Rails, Sunroof, Tracks & Components, Trunk, Trunk Lid, Windshield Glass, Reveal Moldings, Wiper & Washer Components) | Brakes (Anti-Lock Brakes, Brake Components, Front Brakes, Hydraulic System, Parking Brake, Rear Brakes) | Bumper Components Front (Bumper Components Front) | Bumper Components Rear (Bumper Components Rear) | Charging & Starting (Alternator, Battery, Starter) | Cooling Fan (Cooling Fan) | Cooling System (Cooling System) | Cruise Control System (Cruise Control System) | Differential Rear (Differential Rear) | Door Components (Door Components) | Driveline & Axles (Front 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, Communication System 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, Lift Gate, Mirrors, Navigation System, Parking Aid, Power Seats, Powertrain Control, Rear Door, Rear Seat Belts, Ride Control, Senders, Starter, Sunroof, Switches, Tire Pressure Monitoring, Trunk, Wiper & Washer Components, Wiring Harness) | Emission Control & Exhaust (Emission Components, Exhaust Components, Exhaust Manifold) | Engine (Engine, Engine & Trans Mounting, Engine Appearance Cover, Engine Parts, Mounts, Cylinder Head & Valves, Camshaft & Timing, Oil Pan, Oil Pump, Balance Shafts, Crankshaft & Bearings, Pistons, Rings & Bearings, Transaxle Parts, Turbocharger, Valve & Timing Covers) | Engine Mounting (Engine Mounting) | Engine Parts (Engine Parts) | Exterior Trim Pillars (Exterior Trim Pillars) | Exterior Trim Trunk (Exterior Trim Trunk) | Floor Rails (Floor Rails) | Front Axle (Front Axle) | Front Door (Front Door) | Front Suspension Components (Front Suspension Components) | Fuel Door (Fuel Door) | Glass Door (Glass Door) | Glass Hardware Back Glass (Glass Hardware Back Glass) | Glass Hardware Quarter Panel (Glass Hardware Quarter Panel) | Glass Windshield (Glass Windshield) | Headlamp Components (Headlamp Components) | Headlamp Washers Wipers (Headlamp Washers Wipers) | Headlights & Lighting (Backup Lamps, Bulbs, Fog Lamps, Headlamps, Headlamp Washers/Wipers, High Mount Lamps, License Lamps, Tail Lamps) | Hood Components (Hood Components) | Ignition Lock (Ignition Lock) | Instrument Panel (Instrument Panel) | Instrument Panel Components (Instrument Panel Components) | Intercooler Air (Intercooler Air) | Interior & Exterior Trim (Exterior Trim - Fender, Exterior Trim - Front Door, Exterior Trim - Pillars, Rocker & Floor, Exterior Trim - Quarter Panel, Exterior Trim - Rear Door, Exterior Trim - Roof, Exterior Trim - Trunk Lid, Interior Trim - Front Door, Interior Trim - Pillars, Rocker & Floor, Interior Trim - Quarter Panels, Interior Trim - Rear Body, Interior Trim - Rear Door, Interior Trim - Roof, Interior Trim - Trunk Lid) | Interior Trim Pillars (Interior Trim Pillars) | Interior Trim Trunk (Interior Trim Trunk) | Lower Control Arm Front (Lower Control Arm Front) | Lower Control Arm Rear (Lower Control Arm Rear) | Maintenance & Lubrication (Belts & Pulleys) | P S Pump Hoses (P S Pump Hoses) | Powertrain Control (Powertrain Control) | Rear Door (Rear Door) | Rear Floor Rails (Rear Floor Rails) | Rear Propeller Shaft (Rear Propeller Shaft) | Rear Suspension (Rear Suspension) | Rear Suspension Components (Rear Suspension Components) | Ride Control Components (Ride Control Components) | Seat Belt Body (Seat Belt Body) | Shocks Components (Shocks Components) | Stabilizer Bar Components (Stabilizer Bar Components) | Steering (P/S Pump & Hoses, Steering Gear & Linkage, Shroud, Switches & Levers, Steering Column & Wheel, Steering Gear & Linkage) | Steering Column (Steering Column) | Steering Column Assembly (Steering Column Assembly) | Steering Gear Linkage Steering (Steering Gear Linkage Steering) | Steering Wheel Trim (Steering Wheel Trim) | Struts Components (Struts Components) | Sunroof (Sunroof) | Suspension (Axle & Differential - Rear, Drive Axles - Front, Drive Axles - Rear, Drive Shaft - Rear, Front Suspension Components, Lower Control Arm, Stabilizer Bar, Rear Suspension Components, Lower Control Arm, Upper Control Arm, Stabilizer Bar, Shocks & Components - Rear, Stabilizer Bar & Components - Front, Struts & Components - Front, Suspension Mounting - Rear, Wheels, Covers & Trim) | Tire Pressure Monitoring (Tire Pressure Monitoring) | Transmission (Automatic Transmission, Clutch & Flywheel, Gear Shift Control - AT, Gear Shift Control - MT, Hydraulic System, Manual Transmission) | Trunk (Trunk) | Turbocharger (Turbocharger) | Under Cover Splash Shields Body (Under Cover Splash Shields Body) | Vapor Canister (Vapor Canister) | Wheel Covers Trim (Wheel Covers Trim) | Wiper Washer Components (Wiper Washer Components) | Wipers (Wipers)