Drive belt tensioner. Porsche 958 Cayenne / 970 Panamera

Drive belt tensioner (Hydraulic Portion).
The Genuine Porsche Drive Belt Tensioner (Part No. 94810226121) is used in Porsche Cayenne (92A) and Panamera (970) models. This tensioner maintains proper tension and alignment of the serpentine (ribbed) belt, ensuring the alternator, air-conditioning compressor, power steering pump and other accessories function smoothly.

Fits:
Porsche 958 Cayenne S / GTS / Turbo 4.8L 2011 - 2018
Porsche 970 Panamera 3.6L 2011 - 2016
Porsche 970 Panamera S / GTS / Turbo 4.8L 2010 - 2016

Diagram ref no 3

The belt tensioner plays a critical role in the accessory-drive system: a failing or loose tensioner can allow belt slippage, mis-routing, increased accessory wear or belt breakage. This has implications for alternator output, A/C performance, power steering function and overall engine reliability. By using the genuine Porsche tensioner, you protect the accessory system, maintain factory behaviour and avoid secondary damage.

When to replace:
 • Audible belt squeal, chirp or rumble when the engine is started or under load.
 • Belt shows signs of wear, mis-tracking or vibration.
 • Tensioner or pulley appears worn, loose or has excessive play.
 • During serpentine belt replacement or major engine service where access is available.
 • High-mileage vehicles where the original tensioner may be nearing end of service life.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

94810226121

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