do not press the back button…
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
ATF Reservoir to Gearbox Sump Seal – O-Ring (924 / 928 / 944 / 968)
High-quality replacement O-ring seal designed for the connection between the automatic transmission fluid (ATF) reservoir and the gearbox sump.
This critical sealing component ensures a tight and leak-free connection at the transition point between the filler container and the transmission oil pan, maintaining proper fluid circulation and system integrity.
Fits:
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Diagram ref no 41
Manufactured to OEM specifications, this seal is essential for preventing leaks and ensuring reliable operation of Porsche automatic transmission systems.
Key Features
• Direct replacement O-ring seal for ATF reservoir
connection
• Designed for gearbox sump / transmission oil pan interface
• OEM-style fit and sealing performance
• Helps prevent ATF leaks and contamination
• Durable material for long-term reliability
• Essential maintenance component for automatic transmissions
Function and Purpose
This O-ring seal ensures a secure connection between the ATF reservoir and gearbox sump.
It helps to:
• Prevent transmission fluid leaks
• Maintain proper system pressure and flow
• Protect against dirt and contamination
• Support long-term gearbox performance
Why Replace This Seal
Over time, O-rings can degrade due to heat, pressure, and fluid exposure.
Common issues include:
• ATF leaks at the reservoir connection
• Hardened or brittle seal material
• Loss of sealing integrity
• Reduced transmission efficiency
Replacing the seal ensures continued reliability and prevents costly transmission issues.
Maintain the reliability and performance of your Porsche automatic transmission with this ATF reservoir to gearbox sump O-ring seal, designed for Porsche 924, 928, 944, and 968 models.
This OEM-style seal ensures a secure connection between the transmission fluid reservoir and oil pan, preventing leaks and maintaining proper system function. It is a vital component for both routine maintenance and restoration work.
Whether you are addressing a fluid leak or carrying out preventative servicing, this Porsche transmission O-ring provides a simple but essential solution.
Ideal for Porsche Transmission Maintenance & Repair
This product is optimised for enthusiasts searching for:
• Porsche ATF reservoir to sump seal replacement
• Porsche transmission O-ring 477321487
• Porsche 928 automatic gearbox seal
• Porsche 944 968 ATF reservoir seal
• Porsche transmission leak repair parts
These long-tail keywords target high-intent buyers performing maintenance or repair work.
OEM-Style Accuracy and Fitment
Manufactured to match original specifications:
• Correct fit for Porsche automatic transmission systems
• Reliable sealing performance under pressure
• Durable materials for long-term use
• Direct replacement with no modification required
Why This Seal Matters
Prevents Fluid Leaks
Maintains correct transmission fluid levels.
Protects Transmission System
Prevents contamination and pressure loss.
Essential Maintenance Item
Small part with critical importance for gearbox health.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
477321487
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 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- 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
Fits:
Porsche 996 Manual Gearbox
Porsche Boxster 986 Manual Gearbox
Porsche Boxster 987 Manual Gearbox
Porsche 993 Manual Gearbox
Porsche 964 Manual Gearbox
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90012311830
The product you are viewing cross references to these numbers
- 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 1984-1986 3.2L
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Fits:
Porsche 911 65-69
Porsche 911 72-86
Porsche 930 Turbo 3.0L 87-89
Porsche 930 Turbo 3.3L 75-77
Porsche 928 78-86
Click 'Zoom in' for large parts diagram.
Diagram ref no 17
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99906402002
The product you are viewing cross references to these numbers
