Original Porsche Part Genuine Porsche part 9A210512501

Tensioner Blade.
Ensure your Porsche’s timing chain drives remain secure and precisely guided with this genuine OEM tensioner blade. Used in the timing drive system of models like the 911 991.2 / 992.1 / 992.2 or 718 Boxster/Cayman, this blade plays a crucial role in guiding the timing chain and maintaining correct tracking and tension. Ideal when replacing timing chains, guides or tensioner assemblies.
Sold Each.
x2 Required Per Car.

Fits:

• Porsche Boxster 718 2.0L Manual (300 Bhp)
• Porsche Boxster 718 2.0L PDK (300 Bhp)
• Porsche Boxster S 718 2.5L Manual (350 Bhp)
• Porsche Boxster S 718 2.5L PDK (350 Bhp)
• Porsche Boxster T 718 2.0L Manual (300 Bhp)
• Porsche Boxster T 718 2.0L PDK (300 Bhp)
• Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
• Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
• Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
• Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
• Porsche Boxster Spyder 718 4.0L (420 Bhp)
• Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp)
• Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
• Porsche Cayman 718 2.0L Manual (300Bhp)
• Porsche Cayman 718 2.0L PDK (300Bhp)
• Porsche Cayman S 718 2.5L Manual (350Bhp)
• Porsche Cayman S 718 2.5L PDK (350Bhp)
• Porsche Cayman T 718 2.0L Manual (300Bhp)
• Porsche Cayman T 718 2.0L PDK (300 Bhp)
• Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
• Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
• Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
• Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
• Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
• Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
• Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
• Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
• Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
• Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19
• Porsche 992.1 Carrera 2 3.0L 2019-24
• Porsche 992.1 Carrera 4 3.0L 2019-24
• Porsche 992.1 Carrera 2 Cabriolet 3.0L 2019-24
• Porsche 992.1 Carrera 4 Cabriolet 3.0L 2019-24
• Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
• Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
• Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
• Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
• Porsche 992.1 Targa 4 3.0L 2020-24
• Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
• Porsche 992.1 Turbo 3.8L 2020-24
• Porsche 992.1 Turbo S 3.8L 2020-24
• Porsche 992.1 Turbo Cabriolet 3.8L 2020-24
• Porsche 992.1 Turbo Cabriolet 3.8L 2020-24
• Porsche 992.2 Carrera 2 3.0L 2024>>
• Porsche 992.2 Carrera 2 3.0L Cabriolet 2024>>

Diagram Ref No 8

What This Product Does:

• The “tensioner blade” refers to a guide or support element in the timing chain system that helps apply correct pressure or alignment on the chain, often in combination with a chain tensioner or guide rail.
  
• When the timing chain runs between the crankshaft and camshafts (or intermediate shafts) it needs not only the chain and tensioner, but also supporting blades/rails/arms to manage movement, reduce slack and keep the chain tracking correctly.
• The tensioner blade part is one of the curated OEM components that helps ensure accurate timing drive by maintaining chain-contact, reducing vibration, guiding the chain — thereby supporting long-term durability and correct engine timing.

When You Should Consider Replacement:

• The timing chain system is being serviced (e.g., chain/guide/tensioner replacement) — as the blade is likely exposed or used in that service path.
• There are timing-related issues: rattling or clattering from the timing cover area, especially on cold start or idle — which can indicate slack or improper chain tracking.
  
• Diagnostic trouble codes (DTCs) related to camshaft/chain timing errors — because a damaged or worn blade may allow chain deflection or mistracking.
• Visual inspection (if accessible) reveals the blade or guide is worn, cracked, missing, or otherwise compromised.
• High mileage or extended service intervals — the supporting components around the chain wear, and a worn blade can expedite chain wear or guide rail wear.

Why Replacement Matters:

• Maintains engine timing integrity: If the blade that guides or supports the chain is compromised, the chain may skip, jump or wear prematurely — leading to timing errors and potential engine damage.
  
• Reduces noise & prolongs component life: Components like the tensioner blade help damp chain vibration and keep tensioners/rails from excessive wear. Replacing it helps preserve the chain drive system.
  
• Cost-effective preventive repair: When you already have access to the timing system (front cover off, chain out) replacing components such as the blade prevents future labour for incremental failures.

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

0PB109509B

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Timing Chain Slide Rail.
This genuine OEM slide/guide rail is a critical component of the timing chain drive system for select Porsche models 911 991.2, 992.1, 992.2, 718 Boxster/Cayman 982. It ensures the timing chain tracks correctly, maintains proper tension, and prevents chain deflection or wear. Ideal when servicing the timing chain system or responding to noise/chain wear symptoms.
Sold Each.
x2 Required Per Car.

Fits:

• Porsche Boxster 718 2.0L Manual (300 Bhp)
• Porsche Boxster 718 2.0L PDK (300 Bhp)
• Porsche Boxster S 718 2.5L Manual (350 Bhp)
• Porsche Boxster S 718 2.5L PDK (350 Bhp)
• Porsche Boxster T 718 2.0L Manual (300 Bhp)
• Porsche Boxster T 718 2.0L PDK (300 Bhp)
• Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
• Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
• Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
• Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
• Porsche Boxster Spyder 718 4.0L (420 Bhp)
• Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp)
• Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
• Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
• Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
• Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
• Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
• Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19
• Porsche 992.1 Carrera 2 3.0L 2019-24
• Porsche 992.1 Carrera 4 3.0L 2019-24
• Porsche 992.1 Carrera 2 Cabriolet 3.0L 2019-24
• Porsche 992.1 Carrera 4 Cabriolet 3.0L 2019-24
• Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
• Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
• Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
• Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
• Porsche 992.1 Targa 4 3.0L 2020-24
• Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
• Porsche 992.1 Turbo 3.8L 2020-24
• Porsche 992.1 Turbo S 3.8L 2020-24
• Porsche 992.1 Turbo Cabriolet 3.8L 2020-24
• Porsche 992.1 Turbo S Cabriolet 3.8L 2020-24
• Porsche 992.2 Carrera 2 3.0L 2024>>
• Porsche 992.2 Carrera 2 3.0L Cabriolet 2024>>
• Porsche Cayman 718 2.0L Manual (300Bhp)
• Porsche Cayman 718 2.0L PDK (300Bhp)
• Porsche Cayman S 718 2.5L Manual (350Bhp)
• Porsche Cayman S 718 2.5L PDK (350Bhp)
• Porsche Cayman T 718 2.0L Manual (300Bhp)
• Porsche Cayman T 718 2.0L PDK (300 Bhp)
• Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
• Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
• Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
• Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
• Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L

Diagram Ref No 5

What This Product Does:

• In a timing‐chain drive system (crankshaft → intermediate shaft → camshafts), there are guides/rails that the chain runs on. These guides keep the chain aligned, reduce vibration or deflection, and support tensioners in maintaining correct chain tension.
• The slide rail is one of these guiding components — it provides a smooth surface and correct route for the chain, and helps ensure the chain remains properly engaged with sprockets and tensioners.
• If the slide rail is worn, cracked or damaged, the chain may run with slack, contact adjacent components, produce noise, or even skip/skip-tooth under stress — which affects timing and can lead to engine damage.

When You Should Consider Replacement:

• You are already servicing the timing chain system (timing cover off, chain/guide/tensioner replacement) — since access is already required, replacing the guide rail is cost‐effective and prevents future access.
• You hear rattling or a clattering noise from the front of the engine (timing cover area) on cold start or idle, which can indicate chain deflection or guide wear.
  
• You have diagnostic codes relating to camshaft or intermediate shaft timing variations — a damaged or worn guide can cause chain timing to vary.
• Visual inspection (if cover removed) shows the guide rail is cracked, has excessive wear, gouges, or the chain has worn a groove in the rail.
• The vehicle has high mileage and the engine is performance-oriented — these guides can be wearing items and proactively replacing them improves long-term reliability.

Why Replacement Matters:

• Maintain timing accuracy & reliability: If the chain runs on a compromised guide, chain slack or mis-tracking can occur — which leads to timing drift, loss of power, or in worst cases, engine damage.
  
• Eliminate noise and improve smoothness: Worn guides allow chain slap, noise during engine operation, or rougher operation — replacing the slide rail restores proper chain path and quietness.
  
• Prevent escalated failure: A damaged guide could allow the chain to skip or jump, which on high-performance Porsche engines can mean valve-to-piston interaction and major damage.
  
• Efficient service: Since replacing a guide rail often requires similar labour as chain/tensioner replacement, doing it while the engine is opened saves future labour and increases reliability.

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

0PB109513B

The product you are viewing cross references to these numbers

Timing Chain.
Restore the timing drive system of your Porsche with this genuine OEM timing chain. Designed for models such as the 911 991.2 and 718 Boxster/Cayman, this chain ensures the crankshaft and camshafts stay in perfect synchronisation. Over time chains can stretch or wear, leading to noise, timing drift or engine issues. Replace proactively to maintain performance, reliability and peace of mind.
Sold Each.
x2 Required Per Car.

Fits:

• Porsche Boxster 718 2.0L Manual (300 Bhp)
• Porsche Boxster 718 2.0L PDK (300 Bhp)
• Porsche Boxster S 718 2.5L Manual (350 Bhp)
• Porsche Boxster S 718 2.5L PDK (350 Bhp)
• Porsche Boxster T 718 2.0L Manual (300 Bhp)
• Porsche Boxster T 718 2.0L PDK (300 Bhp)
• Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
• Porsche Boxster GTS 718 2.5L PDK (365 Bhp
• Porsche Cayman 718 2.0L Manual (300Bhp)
• Porsche Cayman 718 2.0L PDK (300Bhp)
• Porsche Cayman S 718 2.5L Manual (350Bhp)
• Porsche Cayman S 718 2.5L PDK (350Bhp)
• Porsche Cayman T 718 2.0L Manual (300Bhp)
• Porsche Cayman T 718 2.0L PDK (300 Bhp)
• Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
• Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
• Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
• Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
• Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
• Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
• Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
• Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19

Diagram Ref No 1

What This Product Does:

• The timing chain synchronises the crankshaft’s rotation with the camshaft(s), ensuring valves open and close at the correct times in relation to piston movement. Without correct timing the engine cannot run properly.
• Over time, because the chain is under constant load, it may stretch or wear, tensioners can degrade, guides may wear out. When this happens, slack can appear in the drive which compromises timing, performance, noise, and in worst case leads to engine damage.
  
• This chain is the core drive chain for a given Porsche engine — making it a critical component of engine operation.

When You Should Consider Replacement:

• Noise from the timing cover area (rattling or clattering, especially at cold start or idle) — a sign of slack chain or failing guides.
  
• Engine performance issues: If you experience misfires, power loss, or the engine is not running smoothly, timing chain wear could be a cause.
  
• Diagnostic codes indicating camshaft timing deviation or chain position errors — the chain may have stretched or the drive system may have issues.
  
• High mileage / old age / major service: If the vehicle has substantial miles, or if you are performing major engine service (timing cover off, chain exposed), it’s prudent to install a new chain rather than rely on a worn one.
  
• Visual inspection (if accessible) showing chain wear, guide rail wear or tensioner issues.
  
• If the chain breaks (rare) the engine will not run; therefore proactive replacement pays in reliability.
  
  

Why Replacement Matters:

• Engine integrity and longevity: A failed timing chain can lead to catastrophic engine damage (valves colliding with pistons, etc). Replacing the chain reduces that risk.
  
• Performance & timing accuracy: A new chain ensures timing is correct and optimised — improving engine smoothness, power delivery and reliability.
  
• Noise & NVH improvement: Replacing a worn chain can remove unwanted noise (slap, rattle) from the engine front.
  
• Cost-efficient preventive maintenance: Since accessing the timing chain involves high labour (engine front cover, etc), replacing the chain while you are already in has a better return on investment than waiting for failure.

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

9A210514801

The product you are viewing cross references to these numbers