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- Porsche 914 (1970-1976)
Oil Filler Neck Rubber Sleeve
Restore the integrity of your Porsche 914-6 oil system with
this OE Match Oil Filler Neck Rubber Sleeve.
Fits:
- Porsche 914-6 1970-76
Diagram ref no 33
The oil filler neck rubber sleeve forms the flexible connection between the oil filler neck and the oil tank, creating a secure, oil-tight seal while allowing for the slight movement that naturally occurs between the engine, oil tank and bodywork. This flexibility is essential, as the engine and drivetrain move slightly on their mounts during acceleration, braking and cornering. The rubber sleeve absorbs this movement without placing unnecessary stress on the filler neck or oil tank.
A properly functioning rubber sleeve prevents engine oil from leaking during normal driving and helps stop dirt, dust and moisture from entering the oil system through the filler neck connection.
Manufactured to OE Match standards, this replacement sleeve provides excellent fitment, flexibility and durability, making it ideal for routine maintenance, engine rebuilds and concours restorations.
Why Do Oil Filler Neck Rubber Sleeves Fail?
The original rubber sleeve is subjected to constant heat from the engine and exhaust system, repeated thermal expansion and contraction, oil vapours and environmental ageing. Over time, the rubber gradually hardens, loses its flexibility and develops cracks or splits.
Once the sleeve begins to deteriorate, it may no longer provide an effective seal. This can result in oil leaks around the filler neck, oil residue within the engine bay and, in severe cases, unfiltered dirt or moisture entering the oil system. Because the sleeve also accommodates engine movement, hardened rubber can place additional stress on adjoining components, increasing the risk of further damage.
When Should It Be Replaced?
The oil filler neck rubber sleeve should be inspected whenever the engine is serviced or removed, particularly on vehicles over several decades old where the original rubber components may have deteriorated.
Replacement is recommended if you notice:
- Oil seepage around the filler neck or oil tank
- Visible cracks, splits or perishing in the rubber
- Hardened or brittle material
- Oil smells from the engine bay
- Excessive movement or looseness around the filler neck
- During engine rebuilds or oil tank refurbishment
Replacing the sleeve as part of preventative maintenance helps maintain a leak-free lubrication system and reduces the likelihood of future oil leaks.
Key Features
- Provides a secure, oil-tight connection between the filler neck and oil tank
- Accommodates normal engine movement
- Helps prevent oil leaks and contamination
- Manufactured from durable, oil-resistant rubber
- Ideal for restoration, servicing and engine rebuilds
Porsche 914-6 Oil System Components
The dry sump lubrication system fitted to the Porsche 914-6 relies on every seal and connection remaining in excellent condition. Although small and often overlooked, the oil filler neck rubber sleeve performs an important role in maintaining the integrity of the lubrication system while allowing the engine and oil tank to move independently without stressing the connecting components.
Replacing ageing rubber components is an important part of preserving the reliability of any classic Porsche, particularly where decades of heat exposure have affected the original materials.
Benefits of Replacing the Oil Filler Neck Rubber Sleeve
- Restores a secure oil-tight seal
- Helps prevent oil leaks around the filler neck
- Maintains flexibility to accommodate engine movement
- Reduces the risk of oil contamination
- Improves long-term reliability of the lubrication system
- An ideal preventative maintenance item during engine servicing
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110769110
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- 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
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
Fits:
Porsche multiple models
Diagram Ref No 16
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970734840
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- 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
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
Fits:
Porsche multiple models
Click 'Zoom in' for large parts diagram.
Diagram Ref No 16
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970734840
The product you are viewing cross references to these numbers
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
Fits:
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 981C Cayman 2014-16
Porsche 981C Cayman GT4 2016
Click 'Zoom in' for large parts diagram.
Diagram ref no 27
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A110701622
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