Description
Add a subtle but meaningful upgrade to your engine bay with the Chase Bays Oil Filler Cap. Inspired by the classic, now-discontinued HKS oil caps, we created our own version with modern functionality, motorsport-grade materials, and signature Chase Bays styling.
Unlike our reservoir caps, this is a completely new design—machined from high-grade aluminum, bead blasted, and anodized in our UV-proof MIL-A-8625 Type II black. We also integrated a ¼” ratchet drive slot into the center, making removal easier than ever—solving the one flaw from the OG HKS design.
Features:
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Motorsport-Inspired Styling: A modern homage to the original HKS Oil Filler Cap, re-engineered with functional improvements.
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¼” Ratchet Drive Slot: Easily remove or torque down the cap with a standard ratchet—no more over-tightened oil caps.
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Premium Construction:
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CNC Machined from 6061 Aluminum
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Bead blasted for a smooth, uniform finish
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Anodized Black – UV-proof MIL-A-8625 Type II semi-gloss coating
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Laser-etched Chase Bays logo for long-lasting detail
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High-Performance O-Ring:
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Made from Viton® fluoroelastomer
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Resistant to oil, fuel, and extreme temperatures (-15ºF to 390ºF)
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Perfect Fit: Designed to replace your OEM oil filler cap with precision and durability






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