High Pressure Fuel Injector. Porsche 991.2 turbo / turbo S / GT2 RS › 9A111022231

High Pressure Fuel Injector
Sold each - 6 required per car

This OE Match High Pressure Fuel Injector is a replacement for the original injector fitted to the Porsche 991.2 Turbo, Turbo S and GT2 RS 3.8-litre twin-turbocharged petrol engines.

Fits:

• 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
• Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19

Diagram Ref No 5

Designed to deliver precisely controlled quantities of fuel directly into the combustion chamber, it helps maintain efficient combustion, smooth engine operation and consistent power delivery.

An OE Match alternative to the Genuine Porsche injector, it provides a replacement option for restoring correct fuel injection performance.

What Does the High Pressure Fuel Injector Do?

The injector delivers a precisely measured spray of petrol directly into the combustion chamber.

Working with the high-pressure fuel pump and engine management system, it controls fuel delivery during idling, acceleration and high engine loads.

Accurate injection is essential for maintaining engine performance, fuel efficiency and smooth combustion.

Why Do High Pressure Fuel Injectors Fail?

Fuel injectors operate under extreme pressures and temperatures, making them susceptible to wear and contamination.

Common causes include:

• Carbon deposits restricting injector nozzles.
• Contaminated petrol damaging internal components.
• Wear of injector valves and sealing surfaces.
• Electrical faults affecting injector operation.
• Prolonged exposure to high temperatures and engine vibration.

A failing injector can cause uneven fuel delivery, rough running, engine misfires and reduced performance.

When Should the Injector Be Replaced?

Replacement is recommended when an injector is diagnosed as faulty, leaking or unable to deliver the correct fuel quantity.

Common warning signs include:

• Rough idling or engine misfires.
• Hesitation or loss of power during acceleration.
• Increased fuel consumption.
• Difficult starting.
• Engine management warning light.
• Fuel mixture or cylinder misfire fault codes.
• Irregular engine operation under load.

A defective injector can cause incorrect combustion and potentially damage the engine or catalytic converter if left unresolved.

Checks and Diagnosis

Before replacing the injector, check for stored engine fault codes, inspect fuel rail pressure and identify any cylinder-specific misfires.

Injector electrical connections, fuel delivery and leakage should also be checked to confirm the fault.

High-pressure fuel systems require specialist installation procedures. Associated seals and mounting components should be replaced where specified by Porsche.

Key Features

• OE Match replacement high-pressure fuel injector.
• Suitable for 3.8L twin-turbocharged DFI engines.
• Provides precise fuel delivery into the combustion chamber.
• Supports efficient combustion and engine performance.
• Helps restore smooth idling and throttle response.
• Replacement alternative to the Genuine Porsche injector.
• Six injectors required for a complete engine set.

Product Category Description – Porsche 991.2 Turbo & GT2 RS Fuel Injectors

OE Match high-pressure fuel injectors provide a replacement solution for the direct fuel injection systems fitted to Porsche 991.2 Turbo, Turbo S and GT2 RS engines.

These precision components deliver accurately measured fuel quantities directly into the combustion chambers, supporting efficient combustion, consistent power delivery and smooth engine operation.

Faulty or contaminated injectors can cause misfires, poor acceleration, increased fuel consumption and reduced engine performance.

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

9A111022231

The product you are viewing cross references to these numbers