Parts are components of a machine, equipment or assembly which are designed to meet specific tolerances so that any component of one category can be fitted with other components.
Mufflers
Spark Plugs
Wheels

Adapters
Air Filter Covers
Air Flow Valves
Alternators
Anti-Scalp Kits
Anti-Vibration / AV Mounts
ATV Covers
Augers and Parts
Axles
Baffles
Bags
Ball Joints
Bar Nuts
Batteries
BearingsBellows
Belts
Belts
Blades (Brushcutter)
Blades (Chipper)
Blades (Edger)
Blades (Hedge Trimmer)
Blade Adapters
Blade Guards
Blower Tubes
Bolts
Brakes
Brake Bar / Rod
Breather Parts
Brushcutter Blades
Bumpers and Bumper Guards
Camshafts
Capacitors
Carburetor PartsCaster Yoke
Chain Adjusters
Chain Catcher
Chainsaw Bars
Chainsaw ChainCheck Valves
Chipper Bags
Chipper Blades
Chutes
Circuit Breakers
Clamps
Clevis Pins
Clutches and Parts
Clutches and Parts
Compressor Pumps
Connecting Rods
Control Boards
Control Cables
Couplers
Cotter Pins
Covers
Crankshafts
Cylinder Kits
Cylinder Heads
Deck Lift
Deck Maintenance Kits
Decks
Decompression Valves
Diodes
Dipsticks
Discharge Chutes
Drain Valves
Drift Cutters
Drive Cable
Drive Chain
Drive Shafts
Drive Sprockets
Dust Plug
Edger Blades
Electrical PartsEngine Rebuild Kits
Engine Sumps
Engines
Engine Oil
Fan Blade
Felling Dogs
Fenders
Flywheels
Flywheel Keys
Forks
Frames
Friction Discs
Fuel Caps
Fuel FiltersFuel Pumps
Fuel System Parts
Fuel System Parts
Fuel Tanks
Furrower Kits
Gas Caps
Gas Tanks
GasketsGator Blades
Gauges
Gears
Generator Covers
Golf Bedknife
Governor Parts
Grass Catchers
Grass Bags
Handles
Head Gaskets
Headlights and Bulbs
Hinge Pins
Hitch Parts
Hitch Pins
Hoods
Hose Clamps
Hour Meters
Hub Caps
Hydraulic Cylinders
Hydraulic Fittings
Hydraulic Hoses
Hydraulic Oil
Hydraulic Pumps
Hydraulic Valves
Hydro Pumps
Idler Pulleys
Ignition Parts
Ignition Parts
Jackshafts
Jack Stands
Keys
Knobs
Lawn Mower Covers
Lawn Striping Kits
Levers
Lift Kits
Light Kit
Linch Pins
Log Cradle
Log Splitter Covers
Low Oil Switches
Lubricants
Maintenance Kits
Manuals
Motor Mounts
Mower Handles
Mulch Kits
Oil
Oil Caps
Oil Drain Valves
Oil FiltersOil Plug
Oil Seals
Oil Seals
O-Ring
Pistons
Pistons
Piston Rings
Power Cords
Pressure Washer Pumps
Pressure Washer Hoses
Primer BulbsPTO Clutches
PTO Swwitches
Push Rod
Quick Connects
Rear Skirt
Regulators
Retainer Rings
Rivets
Rocker Arms
Roll Pin
Roller Chain
Rollers
Rotors and Stators
Rubber Tracks
Safety Interlock Switches
Saw Blades
Scabbards
Scraper Blade
Screen
Seals
Seats
Shear Pin
Shock Absorbers
Shredder Blades
Skid Shoes
Snap Ring
Snow Blower Chutes
Snow Cab
Solenoids
Spray Guns
Spray Tips
Springs
Sprockets
StartersStarter Brushes
Steering Gears
Steering Shafts
Tachometer Hour Meters
Tail Lights
Thermostats
Throttle Cables
Tiller Tines
Tine Shafts
Tires
Tire chains
Tire Tubes
ToolsTransfer Switches
Transmission Filters
Transmissions
Triggers
Trimmer Clamps
Trimmer Heads
Trimmer Line
Torsion Springs
Vacuum Shredder Bags
Valves
Valve Assembly
Valve Plates
Valve Stems
Variable Speed Pulleys
Wand Pipe
Weight Kit
Wheel Bushings
Wheel Hub
Wheel Motors
Wheel Rims
Wheel Weights
Windshields
Wingnuts
Wiring Harnesses
Worm Gears
Yoke
Part manufacturing processes are required to be streamlined since parts require a guarantee to fit with all others, and it similarly creates the opportunity for accurate interchangeable replacement parts.
The principle was originally put into practice in the 18th century by a number of inventors, including Honoré_Blanc, Henry_Maudslay and Eli_Whitney. The first concepts of interchangeability began to be developed in France during the 18th century, and around 1778, Honoré Blanc began producing some of the first interchangeable parts. Thomas_Jefferson saw a demonstration in 1785, and took the idea back to the United States, where Eli_Whitney and other inventors moved the concept forward. Eli_Whitney saw the potential benefit of developing "interchangeable parts" for the United_States military.