PIAGGIO Oil Pan Gasket for Vespa GT L 125–200 (2003–2006), GTS 125 (2007–2012), GTV 125 (2006–2008), ET4 125–150 (2000–2005), LX 125–150 (2005–2012), LXV 125 (2006–2013), S 125–150 (2007–2012)

Oil Sump Gasket Piaggio Original – Leader, Quasar 125–250 cc – Vespa ET4, GT, GTS, GTV, LX, LXV, S

The original Piaggio oil sump gasket, part number 830128, formerly 827774, is designed to seal the joint between the oil sump and the engine crankcase. It is used in numerous Piaggio four-stroke engines from the Leader series as well as selected other engine variants. Its purpose is to reliably seal the oil chamber in the lower engine area and prevent uncontrolled engine oil leakage at the joint between the housing components.

The gasket is designed for the corresponding standard oil sump construction and is used, among others, in Vespa ET4, GT L, GTS, GTV, LX, LXV and S models. It is also fitted to various vehicles from Piaggio, Gilera, Aprilia and Derbi. Exact compatibility is determined by the original Piaggio part numbers and the respective engine version.

Construction and Sealing Function

The oil sump gasket has an elongated, asymmetrical shape that follows the contour of the sealing surface between the oil sump and the engine crankcase. Its flat carrier structure has a metallic-looking surface. A red sealing bead is applied along the designated sealing areas and also surrounds the individual mounting holes.

When the components are bolted together, this applied sealing bead forms the actual sealing zone. It is intended to compensate for minor manufacturing-related irregularities in the contact surfaces and seal the joint against escaping engine oil. Clean, undamaged sealing surfaces and uniform tightening of the fasteners are essential for this function.

The cut-outs and mounting holes are positioned according to the intended engine design. At the narrow end of the gasket shown, the distance between two mounting holes is 34 mm. This dimension can assist with visual identification but does not replace verification of the original part number.

Application in Piaggio Leader and Quasar Engines

Piaggio Leader engines were produced in different displacement and cooling configurations. These include air-cooled and liquid-cooled four-stroke engines with displacements of 125, 150, 180 and 200 cc. In the corresponding versions, oil sump gasket 830128 is used to seal the lower engine crankcase.

This gasket is also listed in Piaggio spare parts documentation for certain 250 cc engine variants. Its application is therefore not limited to a single displacement class or vehicle series. The decisive factors are the specific oil sump construction and its assignment in the spare parts catalogue.

In Piaggio spare parts documentation, gasket 830128 is listed together with the original oil sump 843761, among other components. Both parts are designed to work together in the corresponding engine versions.

Important: Not all Leader and Quasar engines use the same oil sump gasket. Before ordering, the existing gasket, original part number and specific engine version must be checked for compatibility.

Technical Features and Original Part Numbers

• Manufacturer: Piaggio
• Component: gasket between the oil sump and engine crankcase
• Piaggio original part number: 830128
• Previous Piaggio original part number: 827774
• Additional reference numbers: 829524, AP8580185
• Design: flat, contour-cut gasket with multiple mounting holes
• Construction: metallic-looking carrier surface with an applied red sealing bead
• Distance between two mounting holes at the narrow end: 34 mm according to the illustration
• Function: sealing the joint between the oil sump and engine crankcase
• Application: corresponding Piaggio Leader engines and selected other engine variants

Suitable for Vespa

• Vespa GT L 125 (2003–2005)
• Vespa GT L 200 (2003–2006)
• Vespa GTS 125 (2007–2012)
• Vespa GTV 125 (2006–2008)
• Vespa ET4 125 (2000–2005)
• Vespa ET4 150 (2001–2004)
• Vespa LX 125 (2005–2011)
• Vespa LX 150 (2006, 2009–2012)
• Vespa LXV 125 (2006–2013)
• Vespa S 125 (2007, 2009–2011)
• Vespa S 150 (2008–2012)

Other Compatible Piaggio Models

• Piaggio Beverly 125 (2002–2006)
• Piaggio Beverly 200 (2002–2005)
• Piaggio Beverly 250 (2004–2008)
• Piaggio Fly 125 (2004–2007, 2009–2010, 2012)
• Piaggio Fly 150 (1998, 2004, 2006–2008)
• Piaggio Hexagon GTX 125 (2003)
• Piaggio Hexagon GTX 180 (2001)
• Piaggio Liberty 125 (2001–2002, 2006–2015)
• Piaggio Liberty 150 (1998, 2008–2013)
• Piaggio Liberty 200 (2002, 2006–2008)
• Piaggio MP3 125 (2006–2008)
• Piaggio Skipper ST 125 (2000–2005)
• Piaggio Skipper ST 150 (2000)
• Piaggio TPH 125 (2010–2016)
• Piaggio X7 125 (2008–2009)
• Piaggio X8 125 LC (2004–2005, 2007–2008)
• Piaggio X8 125 Potenziato 4V LC (2005–2006)
• Piaggio X8 125 Street AC (2006)
• Piaggio X8 150 Street AC (2006)
• Piaggio X8 200 (2004–2007)
• Piaggio X9 125 (2000–2003)
• Piaggio X9 180 Amalfi (2002)
• Piaggio X9 200 (2002)
• Piaggio X9 Evo 125 (2003–2007)
• Piaggio X9 Evo 200 (2004)
• Piaggio X9 Evo 250 (2004)
• Piaggio XEvo 125 (2007–2016)
• Piaggio Zip II 125 (2000–2003)

Suitable for Gilera

• Gilera DNA 125 (2002–2003)
• Gilera DNA 180 (2001–2003)
• Gilera Nexus 125 (2007–2008)
• Gilera Runner VX 125 (2001–2016)
• Gilera Runner VXR 200 (2003–2004, 2006–2011)

Suitable for Aprilia

• Aprilia Atlantic 125 (2003–2008, 2010–2011)
• Aprilia Atlantic 200 (2003–2005)
• Aprilia Atlantic 250 (2004–2006)
• Aprilia Mojito 125 AC (2003–2007)
• Aprilia Mojito 125 LC (2008)
• Aprilia Mojito 150 (2003–2004)
• Aprilia Scarabeo 125 (2003–2006)
• Aprilia Scarabeo 200 (2003)
• Aprilia Scarabeo 250 (2004–2006)
• Aprilia Sport City 125 (2004–2006)
• Aprilia Sport City 200 (2004, 2007–2008)
• Aprilia Sport City Cube 200 (2008–2010)
• Aprilia Sport City One 125 (2008–2011)
• Aprilia SR Motard 125 (2012–2014)

Suitable for Derbi

• Derbi Boulevard 125 (2003–2009, 2011–2012)
• Derbi Boulevard 150 (2002–2004, 2010)
• Derbi Boulevard 200 (2005–2006)
• Derbi GP1 125 4V LC (2006–2009)
• Derbi GP1 125 Low Seat LC (2007)
• Derbi Sonar 125 (2010–2011)
• Derbi Sonar 150 (2010)
• Derbi Variant Sport 125 (2012)

Replacement and Installation Instructions

The oil sump gasket should generally be replaced whenever the oil sump has been removed. A gasket that has already been compressed may lose its original sealing properties. The condition of the gasket should also be checked if visible traces of oil appear along the joint. Before doing so, it is important to establish whether the leak actually originates from the connection between the oil sump and the engine crankcase.

Before installation, all remnants of the old gasket must be completely removed. Both sealing surfaces must be carefully cleaned and inspected for scratches, deformation or other damage. The new gasket is positioned according to the existing contour and mounting holes. Care must be taken to ensure that it is not bent, displaced or damaged.

The mounting bolts must be tightened in the sequence specified by the vehicle manufacturer and to the correct tightening torque. Uniform tightening is important to ensure that the gasket is compressed sufficiently and as evenly as possible along its entire contour.

Additional sealants should only be used if expressly specified in the installation instructions for the respective engine version. Unsuitable or excessively applied sealing compound may interfere with proper gasket seating and enter the oil chamber.

After installation, the specified engine oil level and the tightness of the joint must be checked. After the first engine run, the entire joint between the oil sump and engine crankcase should be inspected for escaping oil.

The original Piaggio oil sump gasket 830128 is a precisely fitting replacement part for the corresponding standard engine and oil sump configurations. It allows the seal in the lower engine area to be properly restored during maintenance and repair work.