Cam follower Genuine Porsche part 9A710931110

Fits:

• Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-16
• Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD (420Hp) 2014-16
• Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD Executive 2014-16
• Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD (420Hp) 2014-16
• Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD Executive 2014-16
• Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
• Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
• Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18

What the High Pressure Fuel Pump Does

Modern Porsche V6 engines use direct fuel injection, which requires significantly higher fuel pressure than traditional injection systems. The high pressure fuel pump is mechanically driven by the camshaft and increases fuel pressure before delivering it to the fuel rail and injectors.

The fuel pump cam follower sits between the camshaft lobe and the pump itself. It transfers camshaft motion to the pump piston while reducing friction and wear.

Together, these components:

• Maintain correct fuel pressure under load
• Ensure precise fuel atomisation
• Support smooth acceleration
• Improve fuel efficiency
• Enable strong performance across the rev range

Without a properly functioning high pressure fuel pump and cam follower, engine performance and reliability are compromised.

Why High Pressure Fuel Pumps and Cam Followers Fail

High pressure fuel pumps operate under extreme pressure and continuous mechanical stress. Over time, failure can occur due to:

• Internal pump wear
• Excessive cam follower wear
• Poor lubrication or oil contamination
• High mileage fatigue
• Heat cycling and mechanical load

The cam follower is a known wear component, as it constantly rides against the camshaft. If it wears excessively, it can reduce pump stroke and fuel pressure output.

Common symptoms of failure include:

• Long cranking or hard starting
• Loss of power under acceleration
• Engine hesitation
• Check engine light
• Fuel pressure fault codes
• Limp mode activation

Ignoring these symptoms can lead to lean running conditions and potential engine damage.

Why You May Need This Complete Fuel Pump Kit

Replacing only the high pressure fuel pump without inspecting or replacing the cam follower can lead to repeat failure. This complete kit ensures all wear components are renewed at the same time.

This kit is recommended for:

• Vehicles displaying fuel pressure fault codes
• Rough running or hesitation under load
• High mileage preventative maintenance
• Engine rebuild or camshaft service
• Diagnosing direct injection fuel pressure issues

Including new mounting bolts ensures proper torque specification and secure installation.