OEM parts categories for 1984 Mercury Marquis 6 Cyl 3 8L 3At C5: Accelerator Linkage, Air Cleaner & Speed Control (Accelerator Linkage, Accelerator Linkage Air Cleaner, Carburetor - Electronic Fuel Injection, Fuel Filler Door Fuel Vapor Canister And Related Parts, Speed Control - Production Installation - Engine Compartment, Speed Control - Production Installation - Passenger Compartment, Speed Control Production Installation - Accessory Installation) | Air Conditioner, Radios & Shock Absorbers (Ac Hoses & Tubes, Air Conditioner Compressor, Air Conditioner Control And Ducts, Air Conditioner Engine Compartment, Air Conditioner Evaporator, Heated Back Window, Heater - Controls & Ducts, Heater - Heater Parts, Heater Hoses & Tubes, Radio - Monaural, Radio - Premium Sound, Radio - Stereo) | Alternator, Regulator, Battery, Starter & Distributor (Alternator Mounting Brackets, Distributor, Indicator Warning Panel, Instrument Cluster & Related Parts, Starter And Drive Assembly - Ford Positive Engagement) | Automatic Transmission (External Parts - Oil Cooling System, External Parts - Oil Cooling System - Typical, External Parts - Shift Mechanism, External Parts - Shift Mechanism - Console Mounted, External Parts - Steering Column, External Parts - Steering Column Shift Mechanism, External Parts - Steering Column Shift Mechanism And Related Parts - Steering Column - For Floor Shift, External Parts - Steering Column Shift Mechanism And Related Parts - Transmission Bushings, External Parts - Transmission Installation, External Parts - Transmission Shift Controls, External Parts - Transmission To Engine Brace, Internal Parts - Accumulator, Reverse And Overdrive Band And Servo, Internal Parts - Case, Converter Assy. And Related Parts, Internal Parts - Case, Converter Assy. Extension And Related Parts, Internal Parts - Case, Converter Assy., Extension Housing, Internal Parts - Case, Converter Assy., Extension, Housing & Related Parts, Internal Parts - Clutches, Gear, Shaft And Related Parts, Internal Parts - Clutches, Gear, Shaft, Rear Supports And Related Parts, Internal Parts - Clutches, Gear, Shaft, Rear Supports And Related Parts - Front, Reverse Servo And Related Parts, Internal Parts - Clutches, Gear, Shaft, Rear Supports And Related Parts - Main Control Valve Body, Internal Parts - Clutches, Gear, Shaft, Rear Supports And Related Parts - Manual Control Linkage And Related Parts, Internal Parts - Clutches, Gears, Shafts, Extension & Related Parts, Internal Parts - Clutches, Gears, Shafts, Extension And Related Parts - Governor, Low And Intermediate Servo And Related Parts, Internal Parts - Clutches, Gears, Shafts, Extension And Related Parts - Main Control Valve Body, Internal Parts - Clutches, Gears, Shafts, Extension And Related Parts - Manual Control Linkage And Parking Pawl, Internal Parts - Main Control Valve Body, Internal Parts - Manual Control Linkage And Parking Pawl, Internal Parts - Parking Pawl, Throttle And Manual Control Linkage, Internal Parts - Servo Band) | Body Front & Floor (Console - Floor Mounted, Console - W/Split Bench Seat, Consolette, Instrument Panel, Sun Visor, Vanity Mirror And Rear View Mirror) | Body Sides & Quarter (Body Sides & Quarter, Door Bumpers, Handles And Latch Parts - Front Door, Handles And Latch Parts - Rear Door, Lock Cylinder Assy. - Anti-Theft & Illuminated Entry, Window Parts - Front Door) | EM Exterior Moulding (Back Belt Side And Roof Drip Side, Window And Belt) | Engine (Camshaft Gear And Bearings, Crankshaft And Flywheel, Cylinder Block - External Parts, Cylinder Block - Internal Parts, Cylinder Block & Plugs, Cylinder Block Crankcase Ventilation System, Cylinder Head, Valves And Related Parts, Engine Supports - Piston And Connecting Rod, Engine Supports Oil Filter (Spin-On Type), Engine Supports Oil Pump, Engine Supports Valves, Push Rods And Rocker Arm Cover) | Fenders & Hood (Fender & Apron Sheet Metal, Hood) | Frame, Exhaust System, Spring & Stabilizer (Front Stabilizer, Front Suspension, Rear Suspension - Shock Absorbers And Springs) | Front Suspension & Steering (Front Suspension Arms, Shock Absorbers, Spindles, Springs And Stabilizer, Manual Steering System - Steering Gear Assembly, Manual Steering System - Steering Linkage, Steering Power Steering System, Steering Power Steering System - Pump Assy, Steering Power Steering System - Steering Column, Steering Power Steering System - Steering Linkage, Steering Power Steering System - Steering Wheel, Steering Power Steering System -Steering Gear Assy) | Fuel System & Manifolds (Electronic Engine Control (E.E.C), Emission System - Exhaust Gas - Recirculation (E.G.R.), Fuel Filler Door Fuel Pump - Fuel-Line Filter, Fuel System, Fuel System - In-Line Filter Installation, Manifold And Related Parts - Exhaust, Manifold And Related Parts - Intake, Manifold And Related Parts Thermactor Emission) | IT Interior Trim Parts (Floor Insulators, Interior Trim Panels, Interior Trim Panels - R.H. Quarter Panel, Interior Trim Parts - Headlining & Garnish Moulding, Interior Trim Parts - Headlining And Garnish Moulding - Floor Carpets) | Lamps & Wiring (Electrical Systems - Electrical Wire Terminals, Electrical Systems - Fuse Panel And Related Parts, Electrical Systems - Wire Connection Sleeve Kits, Electrical Systems - Wiring System, Electrical Systems - Wiring System - Instrument Panel, Lamps Cargo, Lamps Dome Lamp, Lamps Dome/Map Lamp, Lamps Headlamp, Parking And Front Fender Side Marker, Lamps Illuminated Entry System - Cylinder Assembly, Lamps Illuminated Entry System - Wiring System And Related Parts, Lamps Illuminated Entry System Rear, Backup, License Plate And Body Side Marker) | Radiator & Grill (Belt Tensioner, Cooling System Cond., Radiator Grille & Related Parts, Water Pump) | Rear Axle & Drive Shaft (Driveline Vibration Damper - Rear Axle Mounted, Driveshaft, Rear Axle - Ring Gear) | Roof, Back, Luggage Compartment & Tailgate (Fuel Filler Door, Latch Parts - Luggage Compartment, Liftgate, Window And Related Parts, Luggage Carrier - Roof Mounted, Roof Side Weatherstrips, Sliding Roof) | Seats (Child Safety Seat, Front Seat Parts - Bucket, Front Seat Parts - Full Width, Front Seat Parts - Split Bench, Rear Seat Parts, Rear Seat Parts - Folding, Seat Belt And Shoulder Harness Installation, Seat Belt And Shoulder Harness Installation - Bucket And Split Bench) | SM Body Sheet metal (Lower Body, Upper Body) | Speedometer, Bumpers, Mirrors & Wipers (Bumper - Front, Bumper - Rear, Jack And Spare Wheel Parts, Mirror - Inside, Mirror - Outside - Remote Control, Mirror - Vanity, Rear Window - Washer And Wiper, Speedometer Cable, Windshield - Wiper And Washer) | Wheels & Brakes (Brake And Clutch Pedals, Disc Brake System, Disc Brake System - Brake Assy. - Disc Front, Disc Brake System - Brake Assy. - Drum Rear, Disc Brake System - Brake Assy. - Drum Rear Brake Cylinder Assy. - Rear Drum, Parking Brake System, Wheels Hub Cap And Wheel Cover)