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Accessories
Bike Fitment
Description
Alternator Belt 4PK611
This belt fits models up to production date 07/2003. If your bike was manufactured around this time, you may want to have a look at your original belt before ordering. If you can still see the markings and verify that they are 4PK611, then this will be the correct belt. If not, please see part number 1231841 (4PK592)
Replaces BMW Part Number 12 31 1 341 779 (12311341779)
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Kirk Harrington (Savannah GA) | October 11th, 2026
Acquired a R1100RS in a sweet deal. After 2k miles had a glitch. The repair needed the cover to be removed. Decided the Alt Belt should be replaced. Found the website on a Google search for the belt. Called the customer support like. Very helpful staff member verified my part number prior to the purchase. Was send ground because their location to Savannah is not ridiculous. Belt was on point. Customer service on point. I will be a repeat customer.
Seth S | May 31st, 2022
Great
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