1953–55 / 1965–67 / 1969–74 Chevrolet Corvette NOS GM Oil Filler Cap V8 350 396 427 #3835665

Available for sale is a genuine General Motors New Old Stock (NOS) Oil Filler Cap, GM part number 3835665, designed for select Chevrolet Corvette V8 applications across multiple production ranges, including 1953–1955 early Corvette models and later small-block and big-block V8 applications such as 350, 396, and 427 engines used in 1965–1967 and 1969–1974 Corvette platforms.

This original GM service replacement component is a highly desirable engine bay detail part for Corvette restorers seeking factory-correct appearance and authentic GM hardware for their classic Chevrolet builds.

The Chevrolet Corvette remains one of the most iconic American sports cars ever produced, with each generation representing significant advancements in performance, design, and engineering. From early C1 models to high-performance C2 and C3 big-block Corvettes, maintaining correct engine detailing is essential for authenticity and collector value.

The oil filler cap is an important component of the engine’s crankcase ventilation and oil maintenance system. It seals the oil fill opening on the valve cover or engine block, helping to maintain proper crankcase pressure while preventing contaminants such as dirt, dust, and moisture from entering the engine. A properly functioning and correctly styled oil cap is also a key visual element in a factory-correct engine bay.

Over time, original oil caps can become worn, rusted, faded, or damaged due to heat exposure, oil vapors, and age. Many restorers replace these components to restore proper sealing function as well as original engine bay appearance.

This component is a true New Old Stock (NOS) GM service replacement part, meaning it was manufactured during the original production era and has never been installed on a vehicle. It retains factory specifications, original materials, and authentic GM engineering design.

Unlike many reproduction engine dress-up parts, NOS GM components provide correct factory styling, proper fitment, and authentic materials, making them ideal for concours restorations and collector-grade engine builds.

For Corvette restorers, maintaining correct engine bay detailing is essential for both authenticity and presentation. Whether restoring a small-block C2, a big-block C3, or an early C1 Corvette, using correct GM components helps preserve factory-correct appearance and long-term value.

As original Corvette engine components become increasingly difficult to source, NOS GM oil filler caps like this have become highly sought after by collectors, restorers, and Corvette enthusiasts.

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Product Features

• Genuine General Motors New Old Stock (NOS) part
• GM Part Number: 3835665
• Oil Filler Cap for V8 engines
• Designed for select Corvette applications (1953–55, 1965–67, 1969–74)
• Compatible with various Chevrolet V8 engines including 350, 396, and 427
• Factory-correct engine bay detail component
• Supports proper crankcase sealing and ventilation
• Original GM service replacement part
• Never installed on a vehicle
• Ideal for restoration and engine bay detailing
• Rare multi-era Corvette engine component

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Vehicle Compatibility

Fits select Chevrolet Corvette applications:

• 1953–1955 Corvette (C1)
• 1965–1967 Corvette (C2)
• 1969–1974 Corvette (C3)
• Select V8 engines including 350, 396, 427 configurations

Compatibility may vary depending on engine setup, valve cover design, and emissions configuration. Buyers should verify fitment before purchase.

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Condition

This component is offered in New Old Stock (NOS) condition. It has never been installed and remains an original GM service replacement part. Due to decades of storage, minor shelf wear, light oxidation, fading, or packaging imperfections may be present.

For collectors and Corvette restoration enthusiasts seeking authentic GM engine bay components, this Chevrolet Corvette NOS Oil Filler Cap #3835665 represents an excellent opportunity to restore factory-correct detailing, preserve originality, and enhance the long-term value of your classic Corvette engine build.