Controls the tension on your accessory drive belt
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This product was last offered at the strikethrough price on
09-03-2026
Controls the tension on your accessory drive belt
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This product was last offered at the strikethrough price on
09-03-2026
Also known as a sheave pulley
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Lower Idler Pulley - Up To Engine 30058376
This product was last offered at the strikethrough price on
09-03-2026
Grooved Pulley - Does Not Include Tensioner Assembly
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Accessory Belt Tensioner Pulley
This product was last offered at the strikethrough price on
09-03-2026
Smooth Pulley - Does Not Include Tensioner Assembly
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From Engine Number: M104.994 067245
Controls the tension on your accessory drive belt
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Maintains constant tension on the accessory belt
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Does Not Include Pulley
Transfers power from the accessory belt to the alternator rotor
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Fits All Bosch 120 Amp Alternators - Only Fits Valeo 120 Amp Alternators Up To Valeo Number 2542582C - Please Verify Fitment Prior To Ordering
The solution to a functioning tensioner with a failed pulley
Includes New Pulley - OEM Supplier!
This product was last offered at the strikethrough price on
05-07-2026
Upgrade your M157 AMG or M278 with the UPD Billet Idler Kit - CNC-machined aluminum pulleys built to eliminate factory plastic idler failures and deliver lasting performance and reliability.
Upgrade your M112K with the UPD Billet Idler Kit - CNC-machined aluminum pulleys built to eliminate factory plastic idler failures and deliver lasting performance and reliability.
Upgrade your V12 with the UPD Billet Idler Kit - CNC-machined aluminum pulleys built to eliminate factory plastic idler failures and deliver lasting performance and reliability.
21.36mm x 2260mm
This product was last offered at the strikethrough price on
05-07-2026
21.36x2380mm
From Chassis: A 507496, Or From Chassis: E 014992, Or From Chassis: F 410069, Or From Chassis: R 108313
21.36x2462mm
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
08-13-2026