Description
A quality oil fill cap is essential for maintaining proper engine sealing and preventing contamination—especially on custom or modified engine builds where factory caps don’t fit. This slip-on design with O-ring seal delivers a secure, leak-free fit on 1-3/8in breather tubes, while the knurled aluminum cap provides positive grip and a finished appearance. Whether you’re running a carbureted engine or dealing with aftermarket valve cover configurations, this universal adapter handles the job without modification.
- Slip-on design
- 1-3/8in tube diameter
- Screw-on cap mechanism
- Knurled aluminum construction
- O-ring seal included
- Push-on adapter tube
- Set screws for security
- Natural finish
- Sold individually
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