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Porsche Boxster 986/987/981 (1997-2016) Boxster S 986 3.2L 1999-02 Engine Rebuild Parts Oil System Parts Oil Tank & Parts

Oil Level Sender. (First early version) Porsche 911 01/1963-07/1973 › 90174154100

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Check vehicle fitment

OE Match

90174154100/1

Product Information

This first-version oil level sender from OE Match is intended for Porsche 91 The unit mounts within the oil reservoir and provides the signal used by the dashboard level gauge.

Fits

Porsche 911 01/1963-07/1973

Check fitment for your specific vehicle (model, year, engine) before ordering.

Diagram ref no: 2

What This Product Does

The sender detects the oil level in the tank and communicates that information to the instrument gauge. Its role is level indication, not oil circulation or pressure regulation. A questionable gauge reading should therefore be investigated separately from an oil-pressure fault.

Functions

Detects changes in reservoir oil level.
Supplies an electrical signal for dashboard indication.
Supports routine checks of the vehicle’s oil quantity.

Technical Details

Brand: OE Match.
Supplied reference: 90174154100.
Version identification: first early design.
Installation location: within the oil tank.

Symptoms of Fault

The gauge remains at either extreme despite a verified oil quantity.
Displayed level varies intermittently or responds unusually slowly.
The indicated quantity disagrees with a correctly performed manual check.
Oil dampness appears around the sender’s sealing joint.

These observations do not establish that the sender has failed. Inspect electrical connections, wiring and the gauge, and confirm the actual oil quantity before replacing components.

Why Replacement Matters

Renewing a confirmed faulty sender helps restore useful dashboard level indication. During installation, inspect the sealing area and associated connections so that a separate leak or electrical problem is not overlooked. OE Match’s Porsche-focused replacement programme uses application and original-reference checks to identify suitable components.

FAQs

Does an inaccurate reading always mean the sender needs replacing?
No. Connection faults, wiring problems, instrument defects and an unsuitable checking procedure can produce misleading readings.

Should the seal be inspected during replacement?
Yes. Examine the seal and mating surface, and renew sealing components where required. No seal or fitting hardware is specified as included.

Can the gauge replace a manual oil check?
If the indication appears doubtful, verify the quantity using the vehicle’s prescribed checking method before adding oil.

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

90174154100

90174154100

The product you are viewing cross references to these numbers

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Oil Hose Filler neck to tank. Porsche Boxster 986

99610725403/1

Product Information

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

99610725403

The product you are viewing cross references to these numbers

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Oil Level Sender. (First early version) Porsche 911 01/1963-07/1973 › 90174154100