Oil Hose Filler neck to tank. Porsche Boxster 986  ❭  99610725403

Engine Oil Filler Neck Tube

This engine oil filler neck tube is designed for the Porsche 986 Boxster and provides a direct replacement for worn or damaged oil fill pipes. It connects the oil filler cap to the engine, allowing clean and controlled filling of engine oil while maintaining a sealed system.

Fits:

• Porsche Boxster 986 2.5L 1997-99
• Porsche Boxster 986 2.7L 1999-02
• Porsche Boxster S 986 3.2L 1999-02
• Porsche Boxster 986 2.7L 2003-04
• Porsche Boxster S 986 3.2L 2003-04

Diagram Ref No 19

In the Porsche 986, the oil filler tube runs through the bodywork from the rear luggage compartment to the engine. Due to its length and exposure to heat and vibration, it is a known wear component that can degrade over time.

What This Oil Filler Neck Tube Does

The oil filler neck tube forms the pathway for adding engine oil safely into the engine.

It helps:

• Provide a sealed route from filler cap to engine
• Prevent oil leaks and vapour escape
• Ensure clean and accurate oil filling
• Maintain proper crankcase ventilation
• Support overall engine oil system integrity

A properly functioning filler tube is essential for both maintenance and engine reliability.

Why Oil Filler Neck Tubes Fail

Over time, the original oil filler tube can deteriorate due to heat, age and engine movement.

Common causes include:

Cracking and splitting
Plastic and rubber sections can become brittle and crack.

Oil contamination
Constant exposure to oil vapours can degrade materials.

Heat exposure
Engine bay temperatures accelerate wear and hardening.

Movement and vibration
Engine movement can stress the tube and connections.

Symptoms of a Failing Oil Filler Tube

• Oil smell from the engine bay or cabin
• Visible oil leaks around the filler tube
• Difficulty adding oil
• Engine warning lights related to vacuum leaks
• Rough running due to air leaks in the system

A damaged filler tube can lead to both oil leaks and unmetered air entering the engine.

Why You May Need to Replace This Tube

Fix Oil Leaks
Replacing a cracked tube prevents oil seepage and contamination.

Restore Proper Sealing
Ensures the oil system remains sealed and functions correctly.

Improve Engine Performance
Eliminates vacuum leaks that can affect engine running.

Essential Maintenance for Ageing Vehicles
A common failure point on Porsche 986 models.

Direct Fit Replacement
Designed to match original Porsche specifications for easy installation.

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

99610725403

The product you are viewing cross references to these numbers