Cometic Suzuki GS1100 3.460 Bore .020 Copper Base Gasket

This is a Cometic copper base gasket, specifically made for Suzuki GS1100 and GS1150 engines. It's designed with a 3.460-inch bore and is .020 inches undersize, intended to work with specific engine builds where that precise dimension is needed. Copper base gaskets are known for their ability to seal well under high heat and pressure, making them a solid choice for performance-oriented engine work.

Cometic uses a well-built copper material for this gasket, which offers good conformability to mating surfaces, helping to ensure a tight seal. The .020 undersize bore means it's meant for engines that have been bored out or require a specific piston-to-wall clearance. This gasket fits a range of Suzuki models, including the GS1100E, GS1100ES, GS1150E, and GS1150ES, covering several model years.

When installing this gasket, make sure your engine block and cylinder head surfaces are perfectly clean and flat. Proper preparation is key to getting the best seal from any copper gasket. This part is often used when rebuilding or modifying the top end of these classic Suzuki motorcycles.