Includes accessory and supercharger belt idler pulleys
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This product was last offered at the strikethrough price on
08-11-2026
Includes accessory and supercharger belt idler pulleys
We Price Match - Give Us A Call or Chat!
This product was last offered at the strikethrough price on
08-11-2026
Complete assembly with new pulley
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This product was last offered at the strikethrough price on
09-03-2026
Eliminate weak factory plastic idlers with the UPD M113K Billet Idler Set - a high-strength CNC aluminum upgrade built for smoother operation, extreme durability, and long-term AMG reliability.
Complete assembly with new pulley
We Price Match - Give Us A Call or Chat!
This product was last offered at the strikethrough price on
03-20-2026
Eliminate weak factory plastic idlers with the UPD M113K Billet Idler Set - a high-strength CNC aluminum upgrade built for smoother operation, extreme durability, and long-term AMG reliability.
Includes accessory and supercharger belt idler pulleys
2X Entries Into Our F80 M3 Sweepstakes
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Keeps constant pressure on your serpentine belt to prevent belt slipping
2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
28.45x1289mm - 8PK1289
We Price Match - Give Us A Call or Chat!
This product was last offered at the strikethrough price on
04-13-2026
Keeps constant pressure on your serpentine belt to prevent belt slipping
We Price Match - Give Us A Call or Chat!
Keeps constant pressure on your serpentine belt to prevent belt slipping
We Price Match - Give Us A Call or Chat!
This product was last offered at the strikethrough price on
05-07-2026
Keeps constant pressure on your serpentine belt to prevent belt slipping
10X Entries Into Our F80 M3 Sweepstakes
This product was last offered at the strikethrough price on
05-02-2026
Keeps constant pressure on your serpentine belt to prevent belt slipping
We Price Match - Give Us A Call or Chat!
28.45x1289mm
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
09-06-2026
21.36x2462mm
Featuring Weistec 8 Rib Belt Tensioner. Made in the USA!
Replacement Supercharger Belt for Weistec Supercharged M113K with 67.5mm upper, and Stock (150mm) Lower.