JURPLIX Serpentine Belt Tensioner & Idler Pulley Kit for Mercedes‑Benz (OE 2722000270) — Alloy, Heat‑Treated Bearings

JURPLIX's serpentine belt tensioner and idler pulley kit is a complete replacement assembly engineered to restore correct belt tension and smooth accessory drive operation on compatible Mercedes‑Benz engines.

This kit combines a precision tensioner, matching idler pulley(s) and hardware made to the OE specifications referenced by Mercedes‑Benz part numbers (including 2722000270, 2722021019 and 2722021419). Built from high‑grade alloy steel and aluminum with heat‑treated components, the assembly aims to reduce belt slippage, limit noise and extend the service life of belts and pulleys when installed on the listed models. Before ordering, check the OE number and vehicle application carefully to ensure direct compatibility.

Which Mercedes‑Benz models and years does this kit fit?

This kit covers a wide range of Mercedes‑Benz cars and SUVs across several model lines and engine displacements. It fits many C‑class, E‑class, S‑class, SLK, GL/GLK/ML, R and G models produced in mid‑2000s to early‑2010s, listed by engine size for precise matching.

• C‑class: C230 (2006–2007 2.5L), C280 (2006–2007 3.0L), C300 (2008–2012 3.0L), C350 (2006–2011 3.5L)
• Coupe/Convertible/Sport: CLK350/CLK550, CLS550, SL550, SLK280/SLK300/SLK350
• SUVs and larger cars: GL450/GL550, GLK350, ML350/ML450/ML550, R350, G550, S400/S550
• Always verify OE numbers (2722000270 / 2722021019 / 2722021419) before purchase

How does this tensioner and idler pulley kit improve drive performance?

Replacing worn tensioners and pulleys restores proper belt preload and alignment so the accessory drive runs more quietly and reliably. The kit's corrosion‑resistant materials and precision machining target longer life under heat, vibration and chemical exposure in the engine bay.

• Heat‑treated bearings and alloy construction for durability
• Reduces belt slip and misalignment that cause squeal and wear
• Designed to meet or match OEM tolerance and fitment
• Includes correct hardware and pulley spec (belt: 6PK2404) for direct replacement

What OE numbers and alternate references should I check?

Confirming the OE or alternate reference numbers ensures you get the correct assembly for your engine generation. This kit references the primary Mercedes part numbers and several cross‑references used by dealerships and parts catalogs.

• Primary OE numbers: 2722000270, 2722021019, 2722021419
• Alternate formatting: 272 200 02 70, 272 202 10 19, 272 202 14 19
• Other cross numbers: A0039937296, A2722000270, A2722020000, A2722021419
• Belt specification to confirm fit: 6PK2404

What should I expect during installation and maintenance?

Installation typically follows factory service procedures: relieve belt tension, remove the old tensioner and idler, fit the new components and re‑tension the belt to spec. Regular visual checks of belt condition and pulley bearing play help extend service intervals and prevent accessory drive failure.

• Follow vehicle service manual torque and alignment instructions
• Inspect belt for cracks, glazing or frayed ribs when installing
• Replace the kit at first signs of bearing noise, looseness or oil contamination
• Professional installation recommended if you’re not experienced with accessory drives

Who is this for: The JURPLIX serpentine belt tensioner and idler pulley kit is intended for mechanics, repair shops and owner‑operators who maintain mid‑2000s to early‑2010s Mercedes‑Benz models listed above and who need an OE‑style replacement. It’s suited to anyone replacing worn or noisy tensioners/pulleys to restore belt drive performance and prevent downstream accessory damage; always verify compatibility by matching your vehicle’s model year, engine displacement and OE part number before ordering.