Engine Timing Chain Tensioner - Volkswagen (03H-109-507-B)

Details

• Brand:

  

• SKU:

  03H-109-507-B

• Other Names:

  Tensioner

• Description:

  Product Description

  Genuine Volkswagen Engine Timing Chain Tensioner

  Maintain perfect valvetrain timing and protect your engine from catastrophic internal damage with this Genuine Volkswagen Engine Timing Chain Tensioner (MPN: 03H-109-507-B). This factory-original OEM hydraulic tensioner applies precise, continuous pressure against the timing chain guide rail, keeping the chain taut and synchronized from the idler gear to the camshaft adjuster.

  Over time, mechanical wear or oil pressure fluctuations can cause a timing chain tensioner to fail. A weak or worn tensioner can lead to timing chain slack, resulting in uncharacteristic engine rattling noises (especially at startup), rough idling, misfires, or "Check Engine" lights for camshaft alignment. Left unaddressed, a loose chain can jump teeth, leading to severe piston-to-valve collision. Replacing your worn component with this genuine VW original ensures factory-spec hydraulic calibration and long-term durability.

  Specifications & Features

  • Brand: Genuine Volkswagen OEM

  • Part Number:

  • 03H-109-507-B

  • Product Type: Engines & Engine Parts / Timing Components

  • Also Known As: Tensioner, Chain Tensioner

  • Supersedes/Replaces: 3h109507a

  • Weight: 0.25 lbs

  • Dimensions: 2.68" L × 1.06" W × 1.06" H

  Vehicle Compatibility Overview

  This timing chain tensioner is precision-engineered for platform-sharing Volkswagen utility vehicles equipped with the specialized 3.6L V6 Gas engine. It accommodates mid-generation updates with the following configuration breakdowns:

  • Volkswagen Atlas (2018 - 2023)

    • Trims: Launch Edition, S, SE, SEL, SEL Premium (and matching packages)

    • Production Note: Covers specific engine builds spanning updates up to and past 2021 production lines.

  • Volkswagen Atlas Cross Sport (2020 - 2023)

    • Production Note: Fits versions produced both to 04/19/2021 and from 04/20/2021 onward.

  ⚠️ Fitment Note: Internal engine timing components are extremely sensitive to production date cutoffs and specific engine block codes. To guarantee 100% accurate compatibility for your engine overhaul, please provide your VIN (Vehicle Identification Number) at checkout so we can verify this part against your factory build sheet before shipping.
  

  
  

  Idler to Cam. Adjuster. To 4/19/2021. Atlas Cross Sport. From 4/20/2021. From 04/19/2021. To 04/19/2021.

• Applications: 3.6L.
• Replaces:

  3h109507a

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