Oil Filler Neck Hose. Porsche 993  ❭  99320721202

Fuel tank cap with gasket.



Fits:
Porsche 911/912 1965-77
Porsche 911 (930) Turbo 1975-77
Porsche 914 1970-76
Porsche 356 B-T6 / 365 C 1960-65

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Diagram ref no 42

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Related, superseded, cross reference or alternative numbers for comparison.

90120127102

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Oil Tank Cap.

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

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Fuel Tank Cap – Yellow Zinc 

Complete your classic Porsche restoration with this OE Match Fuel Tank Cap, finished in the correct yellow zinc plating for an authentic factory appearance. This premium replacement fuel cap restores both the functionality and originality of your vehicle's fuel 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 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 356B 1959-63
• Porsche 356C 1963-65
• Porsche 914 (1970-1976)

The fuel tank cap plays an essential role in sealing the fuel tank, helping to prevent fuel contamination while reducing the risk of fuel vapour escaping. Over time, original caps can suffer from corrosion, worn sealing surfaces, damaged threads and deteriorated finishes, particularly after decades of use and exposure to moisture, fuel and changing temperatures.

Manufactured to OE Match standards, this replacement cap combines dependable sealing performance with the correct period-correct yellow zinc finish, making it an ideal choice for concours restorations, sympathetic refurbishments and routine maintenance.

What Does the Fuel Tank Cap Do?

The fuel tank cap provides a secure seal for the fuel filler neck, protecting the fuel system from dirt, dust and moisture while helping maintain correct tank pressure.

Its primary functions include:

• Sealing the fuel tank.
• Helping prevent fuel leaks.
• Protecting against contamination.
• Reducing fuel vapour loss.
• Maintaining safe operation of the fuel system.
• Completing the original appearance of the fuel filler compartment.

A properly functioning fuel cap is an important component for both vehicle safety and reliable operation.

Why Replace the Fuel Tank Cap?

Years of regular use and environmental exposure can cause the fuel cap to deteriorate.

Common issues include:

• Corrosion of the original finish.
• Damaged or worn sealing surfaces.
• Worn locking tabs or threads.
• Fuel odours caused by poor sealing.
• Cosmetic deterioration during restoration.
• Missing or incorrect replacement caps.

Replacing the fuel cap restores both the appearance and functionality of the fuel system while helping maintain the originality of your classic Porsche.

Features

OE Match replacement fuel tank cap. Correct yellow zinc plated finish. Manufactured for accurate fitment. High-quality steel construction. Helps provide a secure seal. Corrosion-resistant finish. Restores factory-correct appearance. Ideal for concours restorations and classic Porsche refurbishment. Simple direct replacement installation.       
Diagram ref no 42

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

90120127102

The product you are viewing cross references to these numbers