Slip-On Oil Fill & Cap 1-3/8in

The KEVKO Oil Pans & Components Slip-On Oil Fill & Cap 1-3/8in (model K9028) is a precision engine breather component designed for high-performance and racing applications where engine integrity and reliable oil circulation are non-negotiable. Built for builders and technicians who demand OEM-quality components, this slip-on oil fill cap integrates seamlessly into custom and competition engine builds where every detail contributes to long-term reliability and consistent performance.

This aluminum cap assembly features a knurled design for secure, one-handed operation even with gloved hands or in tight engine compartments, while the O-ring seal ensures zero oil seepage under pressure and thermal cycling. The 1-3/8 inch breather tube accommodation and push-on adapter system allow straightforward integration without modification to existing Pan breather configurations, and set screws provide positive retention against vibration and movement during extended operation. Natural aluminum construction resists corrosion while maintaining lightweight characteristics essential in race and build applications.

Engine builders, fabricators, and performance technicians specify this KEVKO component for custom oil pan systems where factory caps are incompatible or inadequate. Installation requires only basic hand tools and takes minutes; the slip-on design eliminates threading complications common with screw-type caps. Ideal for drag racing, road racing, off-road, and street performance builds, this cap delivers the fit, finish, and functional reliability that separate professional-grade engine work from amateur assembly.