How to determine the correct spacer for your application
Universal Air Spring Spacers are designed to fill the extra space created when lifting a vehicle and create a safe platform to mount an air suspension product.
Depending on your lift, vehicle, and air spring kit, these Air Spring Spacers may or may not be for you – these are meant to be a universal, one-size-fits-most solution.
The Universal Air Spring Spacers are designed to work with all of Polyair’s Bellows kits, in particular for 4×4’s designed in USA such as; F-Series, RAM, Sierra, Silverado, Tundra etc
CAUTION – THESE ARE UNIVERSAL KITS AND MAY NOT WORK ON EVERY APPLICATION.
Polyair recommends reading installation manuals for the lift kit and the load assist kit to fully understand the interfaces between the two products prior to purchasing.
Before we begin, it is important to note that a 4″ lift may not require a 4″ spacer.
Do not assume that a 4” lift kit will require a 4” lift spacer. On many lift kits, the lift for the front end is higher than for the rear. In this case, the lift might be labeled as a 4”, but the rear lift may only be 2”.
Option One:
Contact the lift kit manufacturer for the height increase of the rear. Choose the spacer that is closest to the increased amount of the lift for the rear of the truck. It is preferred to mount the air spring taller — or slightly stretched — than shorter — or slightly compressed.
Option Two:
Park your unloaded truck on a flat, level surface and measure between the mounting surfaces of the upper and lower brackets.
Subtract the height of the air spring at design height from the distance found above.
Use that number to choose the lift spacer kit with the appropriate height and angle.
POLYAIR AIR SPRING
5813 (58437) = 6″ / 152mm
5814 (58439) = 5.5″ / 140mm
UNIVERSAL SPACER PART NUMBERS:
52420 = 2″ LEVEL
52440 = 4″ LEVEL
52445 = 4″ 4-DEGREE PITCH