It's time to get the job done right!
Use these catalogs to look up the smallest detail, cross reference old part numbers, or upgrade to the best bolt-on performance part.
Just Suspension catalog
All the best parts and kits
Moog Coil SPrings
Look up factory replacement springs, including calculating heavy duty, drop, lift, and other options to improve the handling of your car, truck or SUV
MOOG Chassis Master Catalog, 1990 and earlier applications
Full visibility to the entire Moog chassis catalogs, including interchange cross reference to original part numbers, other brands such as TRW and Spicer, numerical listings, and dimension charts
Coil spring catalogs back to the 1930's
Need to cross reference an original spring? Use these spec sheets to do the calculations on what spring rate and ride height you need. Get it all here!
Check out this comprehensive Reference book of all American cars from 1960-1972!
By far the most detailed and complete book of the muscle car era, organized by model year and brand. Check out the model pricing, options, paint colors, brand slogans, dimensions, specs, and more! Email us with what you discover, and also post it to #HappyMotoring
Check out this comprehensive Reference book of all American cars from 1946-1959!
A similar expansive volume to the muscle car era, Kelly Flory completes a full work of the fabulous post-war and 50's era cars! Dont miss the appendices that show transmission types, minor brands, engine types, 1950's dream cars, and engineering milestones. Email us with what you discover, and also post it to #HappyMotoring
Diagnostic Trouble Codes 1994-2004 EuroPean cars and trucks. Including Petrol, diesel, 2wd and 4wd cars and SUV's by Autodata
This fantastic manual helps you diagnose any european market vehicle (including US and Japanese makes). It includes Flash, MIL, and E OBD codes, engine management system codes, transmissions, immobilizers, and data link connector locations. Email us with what you discover, and also post it to #HappyMotoring
Glossary of Automotive parts Terms
Adjusting sleeve An internally threaded sleeve located between the tie-rod ends that, when turned, moves the front or rear wheels when toe is being adjusted.
Aftermarket A term used for parts and equipment sold by companies independent from the vehicle manufacturer.
Airbag A passive restraint system having an inflatable bladder located in the steering wheel and in the dash ahead of the passenger seat.
Air shock A shock using air pressure and a rubberized bag that is a part of the shock absorber.
Air shock system Also known as a secondary air leveling/suspension system. Uses air pressure and a rubberized bag that is a part of the shock absorber.
Air suspension system A suspension system that uses compressed air and air springs to replace conventional coil springs.
Alignment The act of lining up; of being in a true line.
Alignment rack A drive-on device used for alignments.
Aspect ratio The relationship between the height of the tire and the tread width.
Axial play Movement of a component parallel to its axis.
Axle A cross member supporting a vehicle on which one or more wheels are mounted.
Axle flange The outside end of the axle where the wheel/drum/rotor attaches.
Ball joint A joint or connection where a ball rides in a socket.
Battery A device that stores electrical energy in chemical form.
Bearing An antifriction device having an inner and outer race with one or more rows of steel balls.
Belt A device used to drive the water pump and other accessories.
Boot A flexible rubber or plastic cover used over a component to protect it from the elements.
Bump steer When a vehicle experiences a toe change over a bump, it is called bump steer. Almost all vehicles have some bump steer.
Bushing A sleeve, usually bronze, inserted into a bore to support a shaft.
Camber The inward or outward tilt of the wheel and tire assembly as viewed from the front or rear of the vehicle.
Caster The angle between the steering/spindle axis and vertical, as viewed from the side of the vehicle.
Center bolt A term used for a bolt that holds the spring leaves in a fixed position and indexes the spring to the axle housing.
Center link A steering linkage part that is connected to the tie-rod ends and the Pitman arm to transfer the rotating mation of the steering box to linear motion necessary to move the wheels from side to side.
Chassis The frame of a vehicle.
Clock spring Device attached to the steering column and the steering wheel that insures good electrical paths for the air bag assembly signals.
Coil spring A spring steel bar or rod that is shaped into a coil to provide an up-and-down springing effect.
Conicity A tire condition that occurs when the tire tread is installed off center on the carcass, creating a cone shape. This causes the vehicle to pull to one side and is diagnosed by changing the tire position on the vehicle.
Connecting link A link in which a removable rod or plate facilitates connecting or disconnecting the ends of a chain.
Control arm The main link between the vehicle wheels and frame.
Crash sensor Normally open input of the air bag system that has gold plated contacts that close when subjected to a predetermined deceleration force.
Directional tires Tires with a particular tread pattern that are designed to give maximum traction. Directional tires must be mounted to turn in a specific direction of rotation.
Drivetrain All of the components required to deliver engine power to the road surface.
Dynamic Pertaining to energy, force, or motion in relation to force. A term used when wheels are balanced using equipment that spins the tire and wheel assemblies.
Eccentric adjuster An adjustment system that converts a rotary motion into a reciprocating mation.
Engine The prime mover of a vehicle that converts chemical energy (fuel) into mechanical energy (motion).
Exhaust The harmful burned and unburned gases that remain after combustion; the pipe extending from the muffler to vent the gases.
Exhaust system The exhaust manifold, catalytic converter, muffler, and pipes that vent harmful burned and unburned gases, a product of combustion, to the atmosphere.
Factory bulletin An official periodic publication by the vehicle manufacturer with service tips and hints.
Flush To use a fluid to remove solid and semisolid particles.
Frame The substructure of a vehicle.
Free play The movement permitted between two mating and/or rotating parts.
Front cradle Heavy metal framework that attaches to the chassis and supports the powertrain and allows the attachment of many of the suspension and steering parts.
Front-wheel drive A drive system that transmits power through the front wheels.
Full assist A term used with variable assist steering systems to signify normal power system operation without restrictions.
Fuse A safety device to guard against an electrical overload.
Grease A heavy lubricant,
Height sensor A sensor useq ta monitor the corner height of a vehicle for the level control system.
Hose A rubber or synthetic tube used to transfer fluid or vapor.
Hub The center component of a wheel or gear.
Hub runout The amount of wobble gut of plane measured at an outside machined surface of the hyp,
Idler arm A pivoting component that attaches to the side of the vehicle opposite the Pitman arm ang supports the center link, allowing parallel movement of the steering linkage.
Idle relearn The routine of the computer that resets idle requirements when a disconnected battery has been reconnected.
Included angle The sum of steering axis inclination and camber,
Intermittent problem A problem that only occurs occasionally.
Isolator pad A rubber or synthetic device used to insulate two parts to reduce noise and/or vibration.
Km/hr An abbreviation for kilometers per hour; one km/hr is equal to 0.62 mph.
Knuckle The part around which each front wheel pivots as it is steered.
Leaf spring A vehicle suspension component having one or more thin steel leaves.
Load carrying A term often used when referring to ball joints. It could be the upper or lower ball joint depending on where the spring Supporting the vehicle weight is located.
Load rating A term used to designate the maximum weight a tire is designed to support; the maximum weight a vehicle is designed to support and/or carry.
Lubricant A fluid used to reduce friction between moving parts.
Lubricate To provide lubricant to areas that require such service.
MacPherson strut An independent suspension part that, in connection with the coil spring that supports the vehicle, serves as a shock absorber. If on the front of the vehicle, the spindle, ball joint, and steering arm are attached.
Memory (memory code) A term used for certain fault codes stored in the module of an electronically controlled computer that happened during past operation but is not now present as a hard fault,
Module A solid-state device composed of the components required to monitor, control, and sometimes diagnose many of the systems of today’s vehicles.
MPH (mph) An abbreviation for miles per hour
Neutralized A term used for allowing a system to settle in a nonstressed position. Used in reference to exhaust systems, powertrain mounts, and suspension mounts.
Non-load carrying A term used in reference to the ball joints on a vehicle that hold the suspension parts in place, but do not support the vehicle load.
0il A mineral based lubricant.
0-ring Round or square donut-shaped rubber or synthetic device used to seal a joint or shaft.
Pitman A term often used for the Pitman arm and Pitman shaft
Pitman arm An arm attaching the steering box sector shaft to the center link that changes the rotating forces of the steering box to linear motion and moves the front wheels from side to side.
Power steering A power assisted steering system.
Power steering analyzer A diagnostic device that tests flow, pressure, and operation of everything hydraulic in the power steering system,
Power steering fluid A special fluid used in power steering systems.
Power steering pump A component of the power steering system providing fluid power for operation.
Power supply An electrical or electronic device that predetermined power to satisfy a particular requirement.
Pre-alignment check A series of checks the technician must perform before an alignment is done. All steering and suspension parts are checked for looseness, wear, damage, and general condition.
Preload The specified pressure applied to certain parts during assembly or installation.
Pressure A force per unit area, usually measured in pounds per square inch (psi) or kilopascals (kPa).
Pressure control valve A device used to regulate and/or control a pressure.
Primary air suspension system The term used for a type of vehicle system that uses air, instead of coil, leaf, or torsion bar type springs, to support the vehicle weight.
Pulley A wheel-shaped belt-drive or belt-driven device.
Rack A horizontal toothed bar in the rack-and-pinion power steering sector.
Rack-and-pinion system A type of steering assembly having a pinion on one end that engages in a horizontal-toothed rack with tie rods at either end that attaches to the steering arms.
Rack body A part of the steering system containing the rack.
Rack guide The guide on which the rack is positioned.
Rack shaft A horizontal-toothed part of the rack and pinion.
Radius A term used when referring to the turning radius of a vehicle: a line extending from the center of 4 circle to its boundary,
Rear end The differential and final drive assembly on a rear-wheel-drive vehicle.
Rear springs Coil- or leaf-type suspension components at the rear of a vehicle.
Rear strut A shock-absorber-type component that supports the rear of the vehicle.
Redundant A duplication; a secondary or backup system,
Relay An electromagnetic/mechanical switch,
Road test To drive a vehicle and determine needed repairs,
Rpm An abbreviation for revolutions per minute.
Sector shaft A shaft on which the sector gear is located. A component of a conventional steering gear.
Self test A computer function that scans subsystems and systems to provide data for troubleshooting.
Sensor An electronic device used to monitor relative conditions for computer control requirements.
Shackle bushing Insulated bushings to help prevent the transfer of noise and road shock.
Shim A thin metal spacer used to align two parts.
Shimmy Harsh side-to-side vibration of the steering transmitted to the steering wheel; usually caused by loose suspension parts or front wheel imbalance.
Shock absorber A hydraulic cylinder located at each wheel of the suspension system to dampen road shock.
Silencer pad A rubber or synthetic device used to insulate two parts to reduce noise and/or vibration.
Solenoid An electro-mechanical device used to impart a push-pull motion.
Speed rating A tire rating that indicates the maximum safe speed the tire is designed for.
Speed sensor An electrical device that can sense the rotational speed of a shaft and transmit that information to another device, such as a computer.
Spindle A shaft, stub axle, or knuckle upon which wheel hubs and wheel bearings ride.
Spring A coil- or leaf-type device used in the suspension system for springing the vehicle weight.
Sprung weight The entire weight of the vehicle components that are supported by the springs.
Stabilizer bar link Long metal bolts with insulators and support washers that attach the stabilizer bar to the outer suspension or body.
Static A commonly used term for a balancing process that compensates for an imbalance condition by distributing the weight equally around a part without rotating the part being balanced.
Steering The method whereby the vehicle is kept on course.
Steering arm An arm attached to the steering knuckle/spindie/strut that moves those parts in response to steering wheel movements.
Steering axis inclination (SAI) The angle of a line through the center of the upper strut mount and lower ball joint in relation to the true vertical centerline of the tire, as viewed from the front of the vehicle.
Steering box A general term used for the steering mechanism at the end of the steering column.
Steering column The tubing through which the steering shaft mounts and rotates.
Steering damper A device that reduces or eliminates road shock and vibration.
Steering knuckle The part which pivots in response to forces from the steering box or rack-and-pinion gear and causes the tires to hold the vehicle on course and control the direction of movement of the vehicle,
Steering linkage The assembly of the tie rods, idler arms, and links that make up the system that transfers steering motion to the front wheels.
Steering linkage damper A shock-absorber-type device that connects the steering linkage to the framework of the vehicle and absorbs some of the road shock and dampens most of the vibrations. Such devices are used on many trucks and off-road vehicles.
Steering wheel The wheel located at the top of the steering shaft that the driver uses to steer the vehicle.
Steering wonder The tendency of a vehicle to pull to one side when driven straight ahead.
Strut A component, connected at the top of the steering knuckle to the upper strut mount, that maintains the knuckle position.
Subframe A partial front or rear chassis frame used on some vehicles to support the powertrain and suspension and steering assemblies.
Suspension The system that supports the weight of the vehicle and provides a comfortable and safe environment for the occupants.
Suspension height The height of the vehicle at its four corners.
Sway bar A bar in the suspension system that connects the two sides together in a manner that cornering forces or a road shock is shared by both wheels.
Technical service bulletin Bulletins provided by the manufacturer regarding production changes and corrections to aid the technician in troubleshooting practices and procedures.
Tie rod The steering linkages between the idler arm, Pitman arm, and steering arm.
Tie-rod end A pivoting ball-and-socket joint located at one end of the tie rod.
Tire information label A label required by the federal government and usually placed on the inner glove box door or on a door post on the passenger side of the vehicle. It contains all of the information needed to chose a safe tire of the proper size for the vehicle.
Tire wear pattern The way in which a tire wears due to front end or balance problems.
Toe A suspension dimension; the difference between the extreme front and extreme rear of a tire.
Toe adjustment The methods provided by the manufacturer to move the front or rear wheels so there is a specified distance between a centerline of each front wheel, and the centerline of the rear wheels.
Torque The measure of a force producing tension and rotation around an axis.
Torsion bar A long, spring-steel bar that is used instead of a coil or leaf spring. It usually has an adjustment at one end that makes it possible to easily adjust suspension height.
Transmission A manual or automatic device; a part of the drive train that provides different input and output ratios.
Unscheduled deployment A term used when referring to air bag systems that could be set off without the vehicle being involved in a crash severe enough for normal deployment. Also, accidental deployment of the air bag by not following the vehicle manufacturer’s safety precautions.
Unsprung weight The components of a vehicle that rest directly on the road which are not supported by the springs. Wheels, tires, differentials and half of the weight of any component like control arms that bolt to the wheel and body are the unsprung weight.
Valve stem A device found in the rim of a tire to provide a means of adding air and/or checking its pressure.
Vehicle ride height The specified normal distance between the vehicle chassis and a level surface.
Wheel A circular frame or hub of an axle to which a tire is mounted.
Wheel balance The equal distribution of the weight of a wheel with a mounted tire.
Worm gear A component of a steering gear, into which teeth are cut, resembling the threads of a screw.
Worm shaft A steering gearbox component having spiral grooves.