Description
A properly sealed rocker box is fundamental to engine longevity—this JAMES GASKET component prevents oil seepage that compromises performance and creates maintenance headaches. Designed specifically for Big Twin applications, it delivers OEM-equivalent durability with the reliability of domestic manufacturing. Replace worn gaskets before they allow oil migration to ignition systems or engine covers.
- Fits: Harley Big Twin
- Part Number: 17038-90
- Material: Premium rubber compound
- Manufacturing: Made in U.S.A.
- Installation: Bolt-on replacement
- Function: Rocker box seal
- Application: Engine gasket









