Engine Timing Chain Tensioner 06E109217AC 06E-109-217-AC For Audi EA837 3.0T V6 S4 S5 Q7 A6 A7 A8 Touareg Cayenne — OEM Verified Upper Left Hydraulic Tensioner

The Engine Timing Chain Tensioner with OEM number 06E109217AC is a verified hydraulic tensioner for Audi EA837 3.0T V6 (supercharged) engines. It is a critical component of the cam-to-cam timing chain drive, responsible for maintaining constant chain tension and compensating for chain elongation and wear through oil-pressure actuation. This unit is specifically positioned on the upper left bank (driver side) of the V6 engine.

The EA837 engine family is widely used across Audi (S4, S5, Q7, A6, A7, A8, Q5, SQ5) and also appears in Volkswagen Touareg Hybrid and Porsche Cayenne applications. The 06E109217 series has undergone multiple supersessions (AC to AM, with cross-references to AB, AD, AH, Q, H, AN), meaning the latest revision is typically backward-compatible.

• Position Verified: Upper Left (Fitting Position: upper left) — confirmed by febi bilstein partsfinder for the 06E109217 series.
• Operating Mode Verified: Hydraulic — confirmed by febi (Operating Mode: hydraulic) and OEM parts catalog description ("An oil pressurized Tensioner").
• Dimensions Verified: Length 150 mm / Width 165 mm — confirmed by febi 49842 chain tensioner data.
• Supersession / Cross-Reference Verified: The 06E109217 family includes 06E109217AM (latest for many applications), AB, AD, AH, Q, H, AN as interchangeable or superseded references depending on model year and market. febi explicitly lists compatibility with 06E 109 217 Q.
• Function Verified: Maintains timing chain tension, compensates for chain wear elongation, and prevents chain jump/skip that can cause valve-to-piston contact on this interference engine.
• Multi-Platform Application Verified: Confirmed coverage across Audi A6, A7, A8, Q5, Q7, S4, S5, SQ5, and Touareg Hybrid (upper left / secondary positions). Porsche Cayenne 3.0T applications share the EA837 architecture and are commonly cross-referenced in timing kit listings.

• Cold-start rattle (2–3 seconds): A metallic "diesel-like" rattling from the rear/upper engine on cold start, disappearing once oil pressure builds — the classic symptom of a tensioner that has bled down and cannot hold chain tension.
• Extended rattle duration / warm-engine noise: As wear progresses, the rattle lasts longer and may appear even when warm — indicating the tensioner is no longer compensating effectively.
• P0016 / P0017 fault codes: Crankshaft-to-camshaft correlation codes (Bank 1 / Bank 2) — often stored intermittently and readable from history memory even if the light is off.
• Timing phase deviation beyond ±3°: Diagnostic data showing camshaft phase offset exceeding the OEM tolerance (e.g., −7.2° in a documented EA837 case) — a quantitative indicator that the tensioner/chain system has lost control of timing.
• Rough idle / intermittent misfire: Timing instability from a slack chain can cause idle vibration and driveability complaints.

1. Confirm the failed position: Verify that the upper left tensioner is the source of the noise/fault. Do not replace multiple tensioners without confirming which one has failed.
2. Use OEM timing tools: Lock the crankshaft and camshafts at the specified positions using the correct OEM timing pins/plates. Do not rely on paint marks or "experience" alone.
3. Inspect surrounding components: With the tensioner removed, inspect the chain, guide rails, and tensioner pad for wear, grooving, or plastic deterioration. Replacing the tensioner on a worn chain/guide set often leads to repeat noise.
4. Compare new and old units: Before installation, verify that the new tensioner's body length, mounting configuration, and part number marking match the original unit's position requirement.
5. Prime the tensioner: Where specified by the workshop manual, prime the tensioner with clean engine oil before installation to reduce dry-start rattle.
6. Torque to specification: Tighten mounting fasteners to the OEM torque value for the specific EA837 variant.
7. Re-check timing data: After assembly, start the engine and read camshaft phase adaptation values. The offset should return to within the OEM tolerance (typically ±3°).
8. Road test: Verify that the cold-start rattle is eliminated and that no P0016/P0017 codes return after a cold soak and restart cycle.

• Oil quality is decisive: The hydraulic tensioner relies on clean oil pressure. Use the OEM-specified full-synthetic oil and adhere to service intervals. Dirty oil can block oil ways and prevent the tensioner from working correctly.
• Monitor timing data: At each major service, read camshaft phase adaptation values to detect early chain/tensioner wear before noise becomes severe.
• Cold-start noise is a warning, not a normal characteristic: A brief rattle that resolves within 1–2 seconds may be tolerated, but a rattle lasting longer or recurring when warm warrants immediate inspection.

• Standard packing: Neutral carton with protective packaging; bulk wooden pallet available for export orders.
• Package contents: 1 × Timing Chain Tensioner (gaskets, seals, and mounting hardware not included unless explicitly stated).
• Minimum order: Sample accepted for verification; bulk pricing available for confirmed platforms.
• Suitable for: Audi/VW/Porsche specialist repair workshops, engine rebuilders, performance shops, and spare parts distributors serving the EA837 platform.
• Related parts available: Timing chain kits (including chains, guide rails, and other tensioners), camshaft adjuster bolts, valve cover gaskets, and front crankshaft seals for the EA837 engine family.