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.
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Brand new unit with no core charge. OEM Supplier!
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Brand:
ES#:
4820413
Mfg#:
0009060304
In Stock at Vendor
$1362.99
This product was last offered at the strikethrough price on 05-07-2026
Restore your vehicles stopping power.
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Brand:
ES#:
5445483
Mfg#:
2224215100KT3
In Stock at Vendor
$641.99
This product was last offered at the strikethrough price on 04-11-2026
Front Timing Cover To Block Seal
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Brand:
ES#:
5457287
Mfg#:
2780150080
Ships in 1 day
$20.99
This product was last offered at the strikethrough price on 05-07-2026
For M157 and M278 engines, the coolant lines can become brittle and fail over time. Replacing them during water pump service is a smart preventative measure to avoid future leaks or damage.
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Includes left and right side gaskets. Ensure a proper seal on your exhaust manifold
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Lifetime Replacement
