Oldsmobile Oil Fill Plug for Gen2 V8's
 
Eliminate the Eye-Sore. Seal the Deal.
The factory oil fill tube on an Oldsmobile is often a point of frustration—either it's prone to minor weeping or the stamped-metal aesthetics simply don't match a high-caliber engine build. The Performance Driven Design Oldsmobile Oil Fill Plug is the definitive solution for enthusiasts who have deleted the factory breather or fill tube and demand a sleek, "overbuilt" finish.
 
Double-Sealed for Absolute Confidence.
While others rely on a loose fit or messy RTV, our oil fill plug features a double O-ring design. This dual-seal architecture ensures the plug remains firmly seated even under high-vibration conditions, providing a pressurized, airtight fit that prevents oil mist from escaping and coating your engine bay.
 
Sleek, Minimalist, Mastered.
Machined from a solid block of 6061-T651 Aluminum, this plug is designed to be low-profile and high-impact. It transforms a functional necessity into a focal point of precision. It’s a "true DIY" upgrade—simply lubricate the O-rings and press-fit it into your OEM fill location for an instant aesthetic and functional upgrade.
 
Why Choose Performance Driven Design?
Zero-Leak Integrity: The double O-ring system provides a superior seal compared to single-ring or friction-fit alternatives.
Aerospace Grade: Using T651 tempered aluminum ensures the plug won't expand or contract unevenly with engine heat cycles.
Modern Aesthetic: Cleans up the look of your engine by replacing bulky factory tubes with a flush, precision-machined cap.
 
Don’t let a small detail diminish a great build. Secure your engine’s finish with the PDD Precision Oil Fill Plug.