Application:

2005 - 2009 for Land Rover LR3 With Air Suspension
2010 - 2014 for Land Rover LR4 With Air Suspension
2006 - 2009 for Land Rover Range Rover Sport - Without ACE Suspension
2010 - 2014 for Land Rover Range Rover Range Rover Sport - Excluding Supercharged

OEM Number:

LR016402; LR016404; RPD000305; RPD000306; RPD000308; RPD000309; RPD500880; RPD501090; RPM500010; RPM500210,R016411, LR016418 , LR016419 LR032650, LR038096, LR041110, RPD 501030, RPD501020, RPD501030, RPD501110, LR016402, LR016404, RPD000305, RPD000306, RPD000308, RPD000309, RPD500880, RPD501090, RKB500250, RPM500010, RPM500210, 17500103-101, 17500103-102, 17500103-103, 17500103-104

What is a strut and when does it need replacing?

Struts are an important part of the suspension system in many vehicles. It serves three main roles:

Supports the car or truck
Absorbs impact from potholes, bumps and other irregularities in the road
Helps vehicle wheels turn when driver turns the steering wheel
A complete strut assembly includes both a spring and a shock absorber.

Struts are cylinder-shaped pistons, with a coiled spring wrapped around a shaft, and filled with hydraulic oil. This heavy-duty coil spring supports the weight of the vehicle and absorbs large bumps.

The strut absorbs most of the weight of the vehicle’s up and down motion when it goes over road bumps, while the shock absorbers dampen the resulting vibrations to stop the vehicle from continuing to bounce up and down after the vehicle clears the road obstructions.

The strut’s spring is very strong, and this compressed spring can be very dangerous if not handled properly. To service the struts safely, Arch Auto Parts uses a spring compressor to compress the spring safely, remove the worn strut, and install the new strut in its place. The spring is then carefully allowed to return to its previous state, and the new strut is ready to support your car or truck and absorb impact from potholes and road bumps again.

Air suspension
Air suspension is a type of vehicle suspension powered by an electric or engine-driven air pump or compressor. This compressor pumps the air into a flexible bellows, usually made from textile-reinforced rubber. Unlike hydro pneumatic suspension, which offers many similar features, air suspension does not use pressurized liquid, but pressurized air. The air pressure inflates the bellows, and raises the chassis from the axle.

Air Suspension Kits - Production cars use set shock absorbers and coil springs, and changing those from stock without ruining the car's ride or handling takes time, patience and expertise. And choosing a suspension kit can be a daunting task. There are a multitude of manufacturers and companies selling a wide range of components in a bewildering combination of quantity and quality.

Added to the mix is the fact that air suspension kits only replace coil springs, and coil springs are part of a larger suspension system. Given this fact, many companies offer total suspension overhaul kits, where everything from tie rods to control arms and shocks are replaced with high-end components designed to maximize what an air suspension system can offer.

However, in general, the most basic kits come with air bags to replace a vehicle's coil springs, along with a compressor and air lines. Most basic kits are a two-way system that can result in heavy body roll. Stepping up the line in price means better components, which means more control and variability, better components, and more speed in making changes.

Buying a kit should not be a casual affair. Owners need to put a lot of thought into what they want from a system. The owner of a classic El Camino show car looking to drop his suspension to new lows would need a different system than a heavy-duty pick-up driver looking for better load capacity and control when hauling tools and building material. Similarly, a race driver would be looking for a different level of performance than the driver of a touring car.

Top-of-the-line kits use a four-way system coupled with an advanced controller. Each air bag is controlled separately, but they're linked together by the electronic controller for dynamic and static control. When choosing a kit, consumers also need to understand the differences between pressure systems and ride-height systems.

Pressure-based systems monitor only the air pressure in the bag. This is fine in most cases when you want to do something like preset a pressure to lower a low-rider at a show. However, adding ride-height sensors into the electronic mix brings the kit to a new level. Ride-height systems monitor how much a car raises and lowers while monitoring the pressure needed to reach each level. Ride height and pressure come into play in performance applications as well as work applications, like keeping suspension up on a pickup truck loaded with a few tons of mulch.

FAQ