Lingenfelter L380180000 Lingenfelter Differential & Transmission Vent Bladder Kit v1.3 - Manual (Page 3)

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Thank you for purchasing the Lingenfelter Performance Engineering (LPE) Universal Vent Bladder
Kit. Some vehicles, under higher load or higher speed use, may have issues with fluid leaks from
the differential and/or transmission vent. This bladder kit has been designed as a solution to those
problems. The LPE Universal Vent Bladder Kit is also the perfect solution for vehicles that are
required to have a closed differential system by their sanctioning body. This product can also be
used to provide a closed vent system for vehicles that may have drivetrain components, such as
differentials and transmissions, that may become submerged in water.
The universal bladder is designed to expand to 2.25 liters, enough to account for the thermal
expansion in most light or medium duty differentials, including the AAM 241mm (9.5”) differential.
These instructions include a broad explanation on how to install the kit, as well as a specific example
(2010-2013 Camaro) that shows how the bladder may be oriented on the vehicle.
Read the entire instruction manual before beginning installation. Many of the stock parts will
be used in reassembly.
For some applications, different fittings and tube sizes may be required. Make sure to check
the size of any applicable fittings, such as the differential hose fitting, to determine the correct
fittings and hose sizes before beginning installation.
The following instructions assume that all necessary underbody components have been
removed to allow for adaquate clearance.
2.
1. The LPE differential bladder was designed
to allow for both vertical and horizontal
orientation in the vehicle. If the bladder will sit
horizontally in your application, cut the tip off of
the center breather (blue arrow). If the bladder
will sit vertically in your application, cut the tip
off of the end breather (red arrow). In both
orientations, the breather that has been cut off
must be the lowest point so that the bladder’s
contents can drain back into the differential.
Generic installation instructions for the LPE
Vent Bladder Kit:
2. In some cases, it may be desirable to
run a vent hose from the bladder to a higher
point on the vehicle. If this is required for your
application, simply cut the tip off of the breather
to connect to the differential and connect a hose
to the breather. On the other end of the hose
attach a breather fitting.