S&S Cycle 4-1/8in Rocker Box Base Gasket (10 Pack) — Fits 1999+ Harley-Davidson Big Twin

SKU: SSC90-4099
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About S&S Cycle

S&S Cycle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full S&S Cycle lineup with fast shipping and expert fitment support — order with confidence.

S&S Cycle 4-1/8in Rocker Box Base Gasket (10 Pack) for 1999+ Harley-Davidson Big Twin

Keep your Harley-Davidson Big Twin engine running smoothly with this convenient 10-pack of S&S Cycle 4-1/8 inch Rocker Box Base Gaskets. Designed for 1999 and newer Big Twin models, these gaskets are essential for maintaining a proper seal between the rocker box and the cylinder head, preventing oil leaks and ensuring optimal engine performance. S&S Cycle is renowned for its commitment to quality and performance, making these gaskets a reliable choice for any V-twin enthusiast.

Product Highlights:

  • Pack includes 10 individual rocker box base gaskets.
  • Precisely engineered for 4-1/8 inch bore engines.
  • Compatible with 1999 and later Harley-Davidson Big Twin models.
  • Ensures a tight seal to prevent oil leaks and maintain engine integrity.
  • High-quality construction from S&S Cycle for durability and performance.

This bulk pack is ideal for workshops or riders who perform frequent maintenance or rebuilds. A secure seal in the rocker box area is critical for preventing oil seepage, which can lead to performance degradation and potential engine damage. By using S&S Cycle gaskets, you are investing in the longevity and reliability of your Harley-Davidson engine. This specific gasket is designed to fit the larger 4-1/8 inch bore common in many performance Big Twin builds. Ensure your engine is protected and performing at its best with this essential component. Purchase your S&S Cycle 4-1/8in Rocker Box Base Gasket 10-Pack today at GGCRACING!

Product Details

Product Description
Part Numbers
Sizing & Fit

About S&S Cycle

S&S Cycle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full S&S Cycle lineup with fast shipping and expert fitment support — order with confidence.

S&S Cycle 4-1/8in Rocker Box Base Gasket (10 Pack) for 1999+ Harley-Davidson Big Twin

Keep your Harley-Davidson Big Twin engine running smoothly with this convenient 10-pack of S&S Cycle 4-1/8 inch Rocker Box Base Gaskets. Designed for 1999 and newer Big Twin models, these gaskets are essential for maintaining a proper seal between the rocker box and the cylinder head, preventing oil leaks and ensuring optimal engine performance. S&S Cycle is renowned for its commitment to quality and performance, making these gaskets a reliable choice for any V-twin enthusiast.

Product Highlights:

  • Pack includes 10 individual rocker box base gaskets.
  • Precisely engineered for 4-1/8 inch bore engines.
  • Compatible with 1999 and later Harley-Davidson Big Twin models.
  • Ensures a tight seal to prevent oil leaks and maintain engine integrity.
  • High-quality construction from S&S Cycle for durability and performance.

This bulk pack is ideal for workshops or riders who perform frequent maintenance or rebuilds. A secure seal in the rocker box area is critical for preventing oil seepage, which can lead to performance degradation and potential engine damage. By using S&S Cycle gaskets, you are investing in the longevity and reliability of your Harley-Davidson engine. This specific gasket is designed to fit the larger 4-1/8 inch bore common in many performance Big Twin builds. Ensure your engine is protected and performing at its best with this essential component. Purchase your S&S Cycle 4-1/8in Rocker Box Base Gasket 10-Pack today at GGCRACING!

Product Details

Product Description

About S&S Cycle

S&S Cycle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full S&S Cycle lineup with fast shipping and expert fitment support — order with confidence.

S&S Cycle 4-1/8in Rocker Box Base Gasket (10 Pack) for 1999+ Harley-Davidson Big Twin

Keep your Harley-Davidson Big Twin engine running smoothly with this convenient 10-pack of S&S Cycle 4-1/8 inch Rocker Box Base Gaskets. Designed for 1999 and newer Big Twin models, these gaskets are essential for maintaining a proper seal between the rocker box and the cylinder head, preventing oil leaks and ensuring optimal engine performance. S&S Cycle is renowned for its commitment to quality and performance, making these gaskets a reliable choice for any V-twin enthusiast.

Product Highlights:

  • Pack includes 10 individual rocker box base gaskets.
  • Precisely engineered for 4-1/8 inch bore engines.
  • Compatible with 1999 and later Harley-Davidson Big Twin models.
  • Ensures a tight seal to prevent oil leaks and maintain engine integrity.
  • High-quality construction from S&S Cycle for durability and performance.

This bulk pack is ideal for workshops or riders who perform frequent maintenance or rebuilds. A secure seal in the rocker box area is critical for preventing oil seepage, which can lead to performance degradation and potential engine damage. By using S&S Cycle gaskets, you are investing in the longevity and reliability of your Harley-Davidson engine. This specific gasket is designed to fit the larger 4-1/8 inch bore common in many performance Big Twin builds. Ensure your engine is protected and performing at its best with this essential component. Purchase your S&S Cycle 4-1/8in Rocker Box Base Gasket 10-Pack today at GGCRACING!

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