OEM parts categories for 1988 Jeep J20: Automatic Transmission (Case, Adapter & Miscellaneous Parts, Clutch, Front & Rear, Governor Control, Automatic Transmission, Oil Pump, Gear Train, Output Shaft, Servos - Accumulator & Valve Body) | Body - Doors And Related Parts (Door, Weatherstrips Front & Rear, Mirrors - Outside Electric) | Body - Sheet Metal Except Doors (Fenders, Front, Lock And Release, Hood, Panels, Body Side And Rear) | Brakes, Parking (Lever Assembly & Cables Parking Brake) | Brakes, Service (Booster & Master Cylinder, Brakes, Front Disc) | Clutch (Clutch Pedal) | Cooling (Condenser Tanks, Grille & Related Parts, Radiator & Related Parts, Water Pump & Related Parts) | Electrical (Alternator, Alternator & Mounting, Battery Cables, Battery Trays, Coil - Sparkplugs - Wires, Distributor, Harness - Engine Compartment, Horns, Lamps - Rear, Microprocessors & Oxygen Sensors, Starter & Mounting, Switches & Sending Units) | Electrical - Instrument Panel And Consoles (Fuse Panel - Instrument Panel Wiring, Speakers & Knobs - Radio) | Emission Systems (PCV System, Pulse Air System) | Engine (Camshaft & Valves, Crankshaft & Piston, Cylinder Block, Cylinder Head, Engine Mounting, Engine Oiling, Manifolds - Intake & Exhaust, Timing Cover & Intermediate Shaft) | Exhaust (Exhaust System) | Frame & Bumpers (Bumper, Rear, Bumper, Rear Step, Snow Plow Moldboard & Mounting, Snow Plow Power Angling Cylinders, Snow Plow Power Lift Unit) | Front Suspension & Drive (Bar, Front Stabilizer, Differential - Front Axle, Front Spring & Shock Absorber, Housing - Front Axle) | Fuel (Carburetor & Component Parts, Fuel Line, Fuel Tank, Speed Control - Engine Compartment Components, Speed Control, Instrument Panel Components) | Grand Wagoneer (Insulation, Panels - Door Trim, Seat Belts, Front & Rear) | Heater & Air Conditioning (Controls, Heater And Air Conditioning, Heater Hoses, Receiver/Drier, Condenser & Hoses) | Manual Transmission (Case, Adapter/Extension & Miscellaneous Parts, Case, Extension & Miscellaneous Parts, Controls Switch, Transfer Case Vacuum, Forks, Rails, Shafts, Gear Train, Gear Train, Reverse Idler, Transmission Case, Adapter And Miscellaneous Parts, Transmission Case, Extension & Miscellaneous Parts) | Propeller Shaft And Universal Joint (Shaft - Front Propeller, Shaft - Rear, Propeller) | Rear Axle (Housing & Differential, Rear Axle, Shaft - Rear Axle) | Rear Suspension (Suspension - Rear With Shock Absorber) | Steering (Column Assy & Mounting, Gear - Power Steering, Housing - Steering Column Upper, Linkage & Damper, Pump Mounting - Power Steering) | Wiper & Washers And Cylinder & Keys (Cylinders & Keys, Windshield Wiper & Washer)