Includes accessory and supercharger belt idler pulleys
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Includes accessory and supercharger belt idler pulleys
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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.
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Includes One (1) Drive Belt, One (1) Drive Belt Tensioner, and One (1) Drive Belt Idler Pulley.
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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.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Includes accessory and supercharger belt idler pulleys
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21.36x2390mm
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Up To Chassis: 137111
This product was last offered at the strikethrough price on
05-02-2026
28.45x1289mm - 8PK1289
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This product was last offered at the strikethrough price on
04-13-2026
21.36x2380mm
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From Chassis: 137112
This product was last offered at the strikethrough price on
03-28-2026
Keeps constant pressure on your serpentine belt to prevent belt slipping
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21.36x2390mm
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Up To Chassis: 137111
Keeps constant pressure on your serpentine belt to prevent belt slipping
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This product was last offered at the strikethrough price on
05-07-2026
Keeps constant pressure on your serpentine belt to prevent belt slipping
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This product was last offered at the strikethrough price on
05-07-2026
The solution to a noisy, failing pulley
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This product was last offered at the strikethrough price on
03-29-2026
Keeps constant pressure on your serpentine belt to prevent belt slipping
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Replacement Supercharger Belt for Weistec Supercharged M113K with 67.5mm upper, and Stock (150mm) Lower.
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Replacement Supercharger Belt for Weistec Supercharged M113K with 67.5mm upper, and Stock (150mm) Lower.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms