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Timing Chain, Oil Pump / Crankshaft. Porsche 991.1 R / GT3 RS 4.0L 2015-16 - 9A110523391
9A110523391
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Vehicle Group
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
Information
Timing Chain, Oil Pump / Crankshaft.
The PORSCHE Timing Chain, Oil Pump / Crankshaft 9A110523391 is a genuine Porsche internal engine drive component designed to transfer mechanical rotation between the crankshaft drive system and the engine oil pump on compatible Porsche applications.
Fits:
Diagram Ref No 2
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9A110523391
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The PORSCHE Timing Chain, Oil Pump / Crankshaft 9A110523391 is a genuine Porsche internal engine drive component designed to transfer mechanical rotation between the crankshaft drive system and the engine oil pump on compatible Porsche applications.
Fits:
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
Diagram Ref No 2
The oil pump must operate continuously while the engine is running to circulate lubricant to critical internal components. This chain provides the mechanical drive required for that operation, helping maintain dependable engine lubrication and protection of bearings, timing components and other moving surfaces.
Although designed for long service life, continuous mechanical loading, heat, friction and lubrication conditions can gradually cause wear to the chain and associated components. Excessive chain elongation or damage can create slack, abnormal noise and, in severe cases, compromise the mechanical drive to the oil pump.
What This Product Does:
The chain transfers rotational movement from the crankshaft drive system to the engine oil pump.
As the engine rotates, this mechanical drive allows the oil pump to circulate engine oil through the lubrication system.
Reliable oil circulation supports lubrication of critical components such as:
- Crankshaft bearings
- Connecting-rod bearings
- Camshaft and valvetrain components
- Timing chains and sprockets
- Timing-chain guides and tensioners
- Other internal moving components and friction surfaces
The chain itself does not generate oil pressure. Its purpose is to mechanically drive the oil pump. The pump, pressure-control system and lubrication circuit are responsible for producing and regulating oil flow and pressure.
Symptoms Of Wear Or Failure:
Possible symptoms of deterioration within the chain or associated drive system include:
- Metallic rattling or clattering
- Mechanical chain noise from the engine
- Noise that changes with engine RPM
- Rattle during engine start-up
- Excessive chain slack
- Chain elongation
- Excessive chain movement
- Visible wear to chain links or pins
- Abnormal sprocket wear
- Worn or damaged chain guides, where fitted
- Excessive tensioner travel, where applicable
- Metal or plastic debris in the engine oil
- Wear debris found in the oil filter
- Oil-pressure warning light
- Low oil-pressure warning message
- Oil-pressure-related diagnostic faults
- Abnormal engine noise associated with inadequate lubrication
An oil-pressure warning does not automatically mean the chain has failed. Low oil level, oil pump wear, a blocked pickup, pressure-regulation faults, excessive bearing clearance, incorrect oil or a defective pressure sensor can produce similar symptoms.
Why Replacement Matters:
The Timing Chain performs a critical mechanical role within the engine lubrication system.
Replacing a confirmed worn, elongated or damaged chain can help:
- Restore reliable oil pump drive
- Maintain dependable engine oil circulation
- Reduce excessive chain slack
- Reduce abnormal mechanical noise
- Restore reliable sprocket engagement
- Protect associated sprockets
- Protect chain guides and tensioning components
- Reduce the risk of chain derailment
- Reduce the risk of chain breakage
- Support correct engine lubrication
- Protect bearings and other internal components
- Reduce the risk of lubrication-related engine damage
Because reliable lubrication is fundamental to engine operation, confirmed wear or damage within the oil pump drive system should not be ignored.
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Price: €102.58
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Information
Torx screw M5x12 throttle control element.
Fits:
Porsche 987.2 Boxster / Cayman - 2009 to 2012
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Porsche 718 Boxster / Cayman - 2017 Onwards
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Information
Timing chain guide - side.
Sold individually; x2 required per engine.
Fits:
*NOTE: This guide is only compatible with the 992-2 Carrera 3.0L. It is not suitable for hybrid models, including the GTS, which features Porsche's E-Turbo technology. A different guide is required for these models.
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Sold individually; x2 required per engine.
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*NOTE: This guide is only compatible with the 992-2 Carrera 3.0L. It is not suitable for hybrid models, including the GTS, which features Porsche's E-Turbo technology. A different guide is required for these models.
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- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
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- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
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Information
Timing Chain Tensioner.
Ensure your Porsche’s timing chain drive remains correctly tensioned with this genuine OEM tensioner. Suitable for Porsche 911 991.2 / 992.1 and 982 Boxster/Cayman models, this critical component maintains chain tension from crank to cam or cam to cam, preventing slack, noise and timing errors.
Sold Each.
x2 Required Per Car.
Diagram Ref No 4
What This Product Does:
When You Should Consider Replacement:
Why Replacement Matters:
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Ensure your Porsche’s timing chain drive remains correctly tensioned with this genuine OEM tensioner. Suitable for Porsche 911 991.2 / 992.1 and 982 Boxster/Cayman models, this critical component maintains chain tension from crank to cam or cam to cam, preventing slack, noise and timing errors.
Sold Each.
x2 Required Per Car.
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- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
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- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
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- 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
Diagram Ref No 4
What This Product Does:
- The timing chain tensioner is a hydraulic (typically oil-fed) or spring-loaded device that takes up slack in the timing chain drive system. Without correct tension, the chain can “slap”, skip a tooth, or jump, which can cause serious engine timing errors.
- In an engine like the Porsche performance flat-six, accurate timing is critical. The tensioner ensures the chain remains properly seated against the guides/rails and avoids noise, mis-timing, or eventual failure.
- Because modern Porsche engines often use duplex chains, intermediate shafts and high rev operation, a precise tensioner is essential for durability, reliability and performance.
When You Should Consider Replacement:
- You hear rattling, clattering or ticking noises from the timing‐cover area on startup or idle — a classic symptom of a loose timing chain.
- Your car triggers engine fault codes related to camshaft timing, crankshaft–cam correlation, or variable valve timing errors, indicating possible timing chain slack or timing drive issues.
- You are doing major engine work (e.g., timing cover removal, chain/guide replacement) — since the tensioner is integral to the timing chain system, it’s prudent to replace it at the same time for full reliability.
- The engine has high mileage or service history, and you want to pre-emptively safeguard the chain drive.
- On visual inspection (if accessible) you find slack in the timing chain, worn guides/rails, or old/deteriorated tensioner components.
Why Replacement Matters:
- Engine protection: A faulty tensioner can allow the timing chain to jump or skip, which risks piston-to-valve contact, major engine damage, and costly repairs.
- Maintains precise timing & performance: Correct chain tension ensures accurate valve timing, smooth idle, full power delivery and reliability.
- Eliminates noise & improves reliability: Replacing a worn tensioner removes chain-slap noise and helps prevent future failure.
- Cost efficient when engine access is open: Since accessing the tensioner and chain drive requires substantial labour, replacing the tensioner while you’re already there avoids further job later.
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