OEM parts categories for 2020 Ram 4500: Air Conditioners & Heater (A/C & Heater Controls, A/C & Heater Unit, A/C Compressor, A/C Compressor Mounting, A/C Plumbing, Air Duct Exhauster, Ducts, Front, Ducts, Rear, Heater Plumbing) | Automatic Transmission (Extension, Filters, Fork & Rail, Front Case & Related Parts, Gear Train, Gearshift Control, Gearshift Lever, Cable And Bracket, Mounting Covers And Shields, Mounting Hardware, Mounting Support, Oil Filler Tube & Related Parts, Oil Pan, Cover And Related Parts, Oil Pump & Related Parts, Parking Sprag & Related Parts, Rear Case & Related Parts, Sensors, Switches And Vents, Torque Converter, Transfer Case Assembly, Transfer Case Mounting, Transmission / Transaxle Assembly, Valve Body & Related Parts) | Body - Sheet Metal Except Doors (Aperture Panel And Pillar Supports - Cab Back, Body Plugs, Body Weatherstrips & Seals, Cowl, Dash Panel & Related Parts, Floor Pan, Floor Pan Plugs, Front Aperture Panel, Front Fender, Hood & Related Parts, Roof Panel) | Brakes (Booster & Pump, Vacuum Power Brake, Hydro Booster, Brake Master Cylinder, Brake Tubes & Hoses, Front, Brake Tubes & Hoses, Rear, Brake Tubes And Hoses, Body, Brakes, Rear, Front Brakes, Hydraulic Control Unit, Park Brake Assembly, Rear Disc, Park Brake Lever & Cables, Pedal, Brake) | Cooling (Belts, Serpentine & V-Belts, Charge Air Cooler, Coolant Recovery Bottle, Coolant Tubes & Hose, EGR Cooling System, Pulley & Related Parts, Radiator & Related Parts, Radiator Seals, Shields, & Baffles, Radiator Support, Thermostat & Related Parts, Transmission Oil Cooler & Lines, Turbo Charger Cooling, Water Pump & Related Parts) | Differential And Drive Line (Axle Assembly, Front, Axle Assembly, Rear, Axle Disconnect, Front, Axle Housing And Vent, Front, Axle Housing And Vent, Rear, Axle Shafts, Rear, Differential Assembly, Front, Differential Assembly, Rear, Drive Shaft, Front, Drive Shaft, Rear, Front Axle Shafts) | Doors, Door Mirrors And Related Parts (Front Door Lock Cylinders & Related Parts, Front Door, Hardware Components, Front Door, Shell & Hinges, Mirror, Exterior, Rear Door - Hardware Components, Rear Door - Shell & Hinges, Weatherstrips - Front Door, Weatherstrips - Rear Door) | Electrical (Antenna, Radio, Satellite, GPS and Cellular, Camera System, Center, Power Distribution, Generator/Alternator & Related Parts, Horns, Instrument Panel Cluster, Lamps - Rear, Lamps, Front, Lamps, Interior, Lamps, Outside Mirror, Lamps, Roof, Lamps, Side Camera & Side Mirror, Modules, Body, Modules, Body Controller, Modules, Brake, Suspension & Steering, Modules, Engine Compartment, Modules, Gateway, Oxygen Sensors, Park Assist, Front, Park Assist, Rear, Parts, Headlamp Service, Power Inverter Outlet, Radios, Receiver Modules, Keys & Key Fob, Remote Start, Sensors - Body, Sensors - Brake, Sensors - Drivetrain, Sensors, Engine, Sensors, Exhaust Temperature, Sensors, Lamps & Windshield Washer, Siren, Alarm System, Spark Plugs, Ignition Wires, Ignition Coil And Capacitors, Speakers, Amplifier And Sub Woofer, Speed Control, Starter & Related Parts, Straps, Ground, Switches - Console, Switches - Heater & A/C, Switches - Instrument Panel, Switches - Lighting, Switches - Powertrain, Switches - Seats, Switches - Steering Column & Wheel, Switches, Doors, Mirrors And Liftgate, Switches, Steering Wheel, Switches, Underhood, Telecommunication System, Tray And Support, Battery, U Connect Media & Charging Center, Washer System, Front, Wiper System, Front, Wiring - A/C & Heater, Wiring - Body, Wiring - Chassis & Underbody, Wiring - Console, Wiring - Front End, Wiring - Front Seats, Wiring - Headlamp To Dash, Wiring - Instrument Panel, Wiring - Rear Seats, Wiring - Repairs, Wiring, Automatic Transmission, Wiring, Battery, Wiring, Engine, Wiring, Front Door, Wiring, Rear Door) | Emission Controls (Diesel Exhaust Fluid System, EGR System, Emission Control Vacuum Harness, Vacuum Canister & Leak Detection Pump, Vacuum Pump Vacuum Harness) | Engine (Camshafts & Valvetrain, Crankcase Ventilation, Crankshaft, Crankshaft Bearings, Damper And Flywheel, Cylinder Block And Hardware, Cylinder Block Heater, Cylinder Head Covers, Cylinder Heads, Engine Assembly And Service Long Block Engine, Engine Cover & Related Parts, Engine Gasket/Install Kits, Engine Identification, Engine Mounting Left Side, Engine Mounting Right Side, Engine Oil Pan & Engine Oil Level Indicator & Related Parts, Engine Oil Pump, Engine Oil, Engine Oil Filter, Adapter/Cooler And Splashguard, Exhaust Manifold & Heat Shield, Intake Manifold, Intake Manifold Plenum, Pistons, Piston Rings, Connecting Rods & Connecting Rod Bearing, Timing Case Cover, Timing System, Turbocharger And Oil Hoses/Tubes, Turbocharger Service Kits) | Exhaust (Differential Pressure System, Exhaust Heat Shield, Exhaust System) | Exterior Ornamentation (Active Aerodynamics, Exterior Ornamentation, Grille, Nameplates, Emblems And Medallions, Running Boards And Side Steps) | Frame, Bumper And Fascia (Body Hold Down, Bumper, Front, Frame, Complete, Tow Hooks, Front, Underbody Shields And Plates) | Front Suspension (Front Stabilizer Bar, Front Stabilizer Bar, Track, Suspension - Front, Springs, Shocks, Control Arms) | Fuel (Accelerator Pedal And Related Parts, Air Cleaner, Fuel Filter & Water Separator, Fuel Injection Plumbing, Fuel Injection Pump, Fuel Lines/Tubes, Front, Fuel Lines/Tubes, Rear, Fuel Pump & Sending Unit, Fuel Rail & Injectors, Fuel Tank And Related Parts, Fuel Tank Filler Tube, Throttle Body) | Glass (Glass, Front Door, Glass, Rear Door, Glass, Windshield And Back Glass, Mirror - Inside Rearview) | Interior Trim (Adjusters, Recliners, Shields And Risers - Driver Seat, Adjusters, Recliners, Shields And Risers - Passenger Seat, Cargo Covers, Bins And Organizers, Carpet, Complete, Coat Hooks And Pull Handles, Cowl Side Panel & Scuff Plates, Floor Console, Front, Front Door Trim Panel, Front Seat, Bucket, Front Seat, Center, Headliners, Instrument Panel - Trim, Instrument Panel & Structure, Instrument Panel, Lower, Interior Moldings And Pillars, Load Floor, Cargo, Overhead Console, Plastics, Risers And Frames - Center Seat, Rear Cab Trim Panel, Rear Door Trim Panel, Rear Seat, Bench, Rear Seat, Split Seat, Second Row - Adjusters, Recliners, Shields And Risers, Silencers, Visors And Attaching Parts) | Labels (Engine Compartment, Fuel Filler Door, Instrument Panel) | Rear Suspension (Stabilizer Bar - Rear, Suspension - Rear) | Restraints (Air Bag Modules Impact Sensor & Clock Springs, Air Bag, Front, Seat Belts, First Row, Seat Belts, Second Row) | Steering (Power Steering Hose, Power Steering Pump & Reservoir, Steering Column, Steering Gear Box, Steering Linkage, Steering Wheel Assembly) | Wheels (Emergency Roadside Tools, Spare Wheel Stowage, Tire Monitoring System, Wheel Covers & Center Caps, Wheels & Hardware)