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- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
The OE Match Oil Tank Cap is a premium-quality replacement engine oil filler cap designed to provide a secure, leak-free seal for the engine oil tank on compatible Porsche models. Manufactured to OE specifications for fit, sealing performance and durability, this oil tank cap prevents oil leakage and contamination while maintaining the correct pressure within the engine lubrication system.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 356 1950-55Porsche 356A 1955-59
- Porsche 356B 1959-63Porsche 356C 1963-65
Diagram Ref No 24
Manufactured from high-quality automotive-grade materials with an integrated oil-resistant sealing gasket, the cap is engineered to withstand continual exposure to engine oil, heat, vibration and harsh engine bay conditions. Precision-moulded to OE dimensions, it provides direct OE-style fitment and a positive locking action, making it the ideal replacement for worn, damaged or missing original oil tank caps.
What This Product Does:
- Seals the engine oil tank securely.
- Prevents engine oil leaks from the filler neck.
- Protects the lubrication system from dirt, dust and moisture.
- Helps maintain correct crankcase and oil system integrity.
- Provides a secure locking fit during vehicle operation.
- Supports reliable engine lubrication.
- Restores factory sealing performance.
- Forms an essential part of the engine lubrication system.
Symptoms Of Wear Or Failure:
- Engine oil leaking around the filler neck.
- Oil residue on or around the oil tank.
- Loose or poorly fitting oil cap.
- Cracked or damaged cap housing.
- Perished, flattened or missing sealing gasket.
- Oil smell from the engine bay.
- Dirt or moisture entering the oil tank.
- Difficulty securing the cap correctly.
- Visible wear or deterioration due to heat exposure.
- Engine bay contamination caused by oil seepage.
Why Replacement Matters:
- The oil tank cap is continually exposed to engine heat, oil vapours, vibration and repeated removal during servicing. Over time, the sealing gasket can harden or deteriorate, while the cap itself may crack, warp or lose its ability to lock securely.
- A faulty oil tank cap can allow oil to leak from the filler neck, creating engine bay contamination and increasing the risk of low oil levels. It can also permit dirt, moisture and other contaminants to enter the lubrication system, potentially accelerating engine wear and reducing long-term reliability.
- Replacing a worn or damaged oil tank cap restores a secure, leak-free seal and helps maintain the integrity of the engine lubrication system. The OE Match Oil Tank Cap is manufactured to OE standards using premium-quality materials, providing factory-style fitment, dependable sealing performance and long-lasting durability, ensuring the reliability and protection expected from your Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG20727100
The product you are viewing cross references to these numbers
- 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
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
OE Match oil filler cap and O-ring for Porsche 986 Boxster and 996 models. This replacement cap helps seal the engine oil filler neck, preventing oil vapour leaks, contamination, and loss of correct crankcase sealing.
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 996 C2 / C4 / C4S 1998 - 2004
Porsche 996 Turbo / GT2
Porsche 996 GT3 2000 - 2005
Diagram ref no 18
The oil filler cap closes and seals the oil filler neck after engine oil has been added. The O-ring helps prevent oil vapour escape, oil seepage, dirt entry, and poor sealing within the engine lubrication and crankcase ventilation system.
Functions
• Replaces the engine oil filler cap, includes sealing O-ring
• Seals the oil filler neck
• Helps prevent oil vapour and oil seepage
• Helps stop dirt and debris entering the engine oil system
• Supports correct crankcase ventilation sealing
• OE Match replacement for Porsche 986 Boxster and 996 oil service.
Why Replace This Part?
Oil filler caps and O-rings can wear, harden, crack, loosen, or lose sealing ability due to age, heat, oil exposure, and repeated removal during servicing. A faulty cap or seal can cause oil vapour smells, minor oil seepage, poor crankcase sealing, or contamination risk. Replacing the cap and O-ring helps restore proper oil filler sealing and a clean engine bay.
When to Replace This Part
• The oil filler cap is cracked, loose, missing, or damaged
• The O-ring is hard, flattened, split, or missing
• Oil vapour smell is present around the filler area
• Oil seepage is visible near the filler neck
• The cap no longer tightens or seals correctly
• Engine oil service is being carried out
• The vehicle is undergoing Porsche 986 Boxster or 996 engine bay restoration.
Where it fits on the car
This cap and O-ring fit at the engine oil filler neck on Porsche 986 Boxster and 996 models. It forms part of the engine lubrication sealing system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610703550
The product you are viewing cross references to these numbers
- 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
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