Alternator Pulley for Dealers & RoamRig Customers
Alternator Pulley for Dealers & RoamRig Customers
This is a custom, for RoamRig, alternator pulley that fits Balmar XT series alternators for Sprinters that are used in many vehicles. It will fit the 170XT or the 250XT. This pulley addresses a number of potential issues with the stock Balmar pulley.
The standard Balmar pulley has failed in many vehicles. While Balmar may have addressed these pulley durability issues by changing suppliers, there are other performance limitations with the standard Balmar pulley that this pulley addresses.
Belt "slap" and other belt/tensioner noise often originates at the alternator pulley. When the incorrect pulley is used, the system can be far more vulnerable to resonant responses of the belt drive system due to dynamic behavior of the belt/pulley/tensioner. Most often, these issues are (incorrectly) diagnosed as a bad belt or tensioner. While the belt and tensioner may have been abused and failed from resonant behavior, the correction for that resonant behavior is to replace the pulley with one of ours.
Please see the video below for more information.
These pulleys are on all RoamRig alternators sold after November of 2023. If you bought a 250A alternator from RoamRig that did not come with this pulley, please reach out to us for a discount on a new pulley to retrofit your existing alternator.
See the Installation Instructions.