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High Pressure
Fuel Pump Tappet
Sold each - 2 required per car
The high pressure fuel pump tappet is a
precision-engineered component used in the direct-injection fuel system of Porsche
976 Panamera 4.0-litre models and 9YA.2 Cayenne 4.0-litre models.
Positioned between the camshaft and the high-pressure fuel pump, this tappet
transfers camshaft motion to drive the pump and generate the fuel pressure
required for efficient combustion.
Fits:
- Porsche 9YA.2 Cayenne S Coupe V8 4.0L 474Hp 2023>>
- Porsche 9YA.2 Cayenne Turbo E-Hybrid V8 4.0L 739Hp 2023>>
- Porsche 9YA.2 Cayenne Turbo E-Hybrid Coupe V8 4.0L 739Hp 2023>>
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Diagram ref no 13
In high-output Porsche V8 engines, accurate fuel pressure delivery is essential for performance, emissions control and long-term engine reliability—making this tappet a critical service part.
What Does a High Pressure Fuel Pump Tappet Do?
The tappet converts the rotating motion of the camshaft into
linear movement that actuates the high-pressure fuel pump. This process allows
the fuel system to:
Maintain
precise high fuel pressure
- Support direct fuel injection under load
- Ensure stable engine performance across the rev range
- Optimise combustion efficiency and emissions
Without a properly functioning tappet, the fuel pump cannot operate correctly, leading to drivability and performance issues.
Why Do High Pressure Fuel Pump Tappets Fail?
Due to their location and function, fuel pump tappets are
exposed to continuous mechanical contact, high loads and insufficient
lubrication risk. Common causes of failure include:
- Surface wear from camshaft contact
- Breakdown of protective coatings
- Oil contamination or reduced oil flow
- Extended service intervals
Typical symptoms of tappet wear or failure include:
- Loss of engine performance
- Fuel pressure fault codes
- Rough running or hesitation
- Increased wear to the camshaft or fuel pump
Why Replace the Fuel Pump Tappet?
Replacing a worn tappet helps:
- Restore correct fuel pressure delivery
- Protect the camshaft and fuel pump from damage
- Maintain smooth, consistent engine performance
- Prevent costly fuel system or valvetrain repairs
Early replacement is particularly important on high-performance 4.0-litre Porsche engines where component wear can escalate quickly if ignored.6
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PAC109311
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
This Porsche Genuine OE Fuel Pump is an original factory in-tank electric fuel pump assembly designed for the Porsche 911 (991) Carrera 4 and Turbo models. This component is a key part of the fuel delivery system, supplying fuel from the tank to the engine under controlled pressure.
Fits:
Porsche 991.1 C4 2012 - 2016
Porsche 991 Turbo / Turbo S 2014 - 2018
Diagram ref no 5
Engineered to Porsche’s exact specifications, it ensures correct fuel flow, pressure stability, and seamless integration with modern direct fuel injection systems.
The fuel pump draws petrol from the fuel tank and delivers it to the low-pressure fuel system, feeding the engine-mounted high-pressure pump. This ensures a constant fuel supply required for efficient combustion, power delivery, and smooth engine operation.
In high-performance models like the 991 Turbo, maintaining stable fuel pressure is critical for turbocharged engine efficiency and reliability.
Functions & Technical Role
• Fuel delivery: Pumps fuel from the tank to the engine system
• Pressure stability: Maintains consistent low-pressure supply
• Performance support: Ensures smooth acceleration and engine response
• Integrated assembly: Includes pump, housing, and internal filtration elements
• OEM precision: Designed for exact fitment and correct operating characteristics
Fuel pumps operate continuously under demanding conditions such as heat, pressure, and fuel contamination. Over time, wear or failure can lead to:
• Hard starting or no start
• Loss of power or hesitation
• Engine stalling under load
• Fuel system warning faults
Replacing with a genuine Porsche OE fuel pump restores correct fuel pressure, ensuring reliable performance and protecting the engine.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99162014500
The product you are viewing cross references to these numbers
- Porsche 997 MKII Turbo 2010-13
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
Fits:
Porsche 997.2 Turbo / S 3.8L 2010-13
Porsche 991.1 Turbo 3.8L 2014-16
Click 'Zoom in' for large parts diagram.
Diagram ref no 22
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A111031574
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
An OE Match in-tank electric fuel pump designed to supply fuel from the tank to the engine, ensuring stable fuel delivery and reliable performance in Porsche 991.1 Carrera 4 and Turbo models.
Fits:
Porsche 991.1 C4 2012 - 2016
Porsche 991 Turbo / Turbo S 2014 - 2018
Diagram ref no 5
This OE Match Fuel Pump is a high-quality replacement component engineered to meet original Porsche specifications for fit, performance, and durability. Installed within the fuel tank, this electric pump is a critical part of the vehicle’s fuel delivery system.
This unit functions as a fuel pump assembly, drawing fuel from the tank and delivering it through the low-pressure system to the engine. It ensures consistent fuel flow and pressure, which is essential for efficient combustion and optimal engine performance—especially in high-performance and turbocharged applications.
Designed specifically for Porsche 991.1 Carrera 4 models (2012–2016) and 991 Turbo / Turbo S models (2014–2018), this pump supports all-wheel-drive configurations and non-GT3 variants.
Manufactured using durable, fuel-resistant materials, the OE Match unit is built to withstand continuous operation, temperature fluctuations, and demanding driving conditions. It is a direct replacement for the original in-tank pump and integrates seamlessly with the vehicle’s fuel system.
This fuel pump delivers fuel from the tank to the engine at the correct pressure and flow rate, ensuring smooth engine operation, strong performance, and reliable drivability.
Function
• Pumps fuel from tank to engine fuel system
• Maintains stable fuel pressure and flow
• Supports efficient combustion and engine performance
• Designed for high-performance and turbocharged engines
• Ensures reliable operation under all driving conditions
A failing fuel pump can result in inconsistent fuel delivery, causing hesitation, reduced performance, or starting issues. In turbocharged engines, maintaining stable fuel pressure is critical for power output and engine safety.
Replacing the pump restores proper fuel flow, improves reliability, and helps prevent strain on injectors and other fuel system components.
When to replace
• Engine struggles to start or fails to start
• Noticeable loss of power or hesitation
• Engine stalling or irregular fuel delivery
• Audible fuel pump noise from tank
• Fault codes related to fuel system pressure
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99162014500
The product you are viewing cross references to these numbers