Product Description
Genuine Stant SO-66 Oil Filler Cap (New Old Stock)
Restore your classic GM vehicle with this genuine Stant SO-66 (SO66) oil filler cap. This is a vintage-style Closed System cap designed for the standard 1-1/8" I.D. cammed (twist-lock) hole found on classic Chevrolet valve covers.
Manufactured in the USA, this cap is a direct replacement for GM Part # 3835665. It is highly sought after for restoration on everything from early "Stovebolt" 6-cylinders to high-performance Big Block V8s.
Key Features:
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Part Number: Stant SO-66 (Interchanges with Stant 10066, GM 3835665, AC Delco FC-60)
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Fitment Size: Fits 1-1/8" I.D. Cammed/Twist-Lock Hole
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Finish: Zinc Plated / Silver
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Condition: New Old Stock (NOS) - Made in USA
Verified Vehicle Fitment:
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Chevrolet Cars:
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1949-1954 All Models (6-Cyl "Stovebolt")
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1955-1957 Bel Air / 210 / 150 (V8)
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1964-1969 Chevelle, Nova, Camaro (V8 Models with Twist-Lock Tube)
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Chevrolet Corvette:
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1953-1955 (6-Cyl)
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1965-1967 (396/427 Big Block)
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1969-1970 (350 V8)
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Chevrolet Trucks:
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1955-1958 (6-Cyl Series 10-60)
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1967-1972 C/K Series (V8)
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Other GM:
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Fits various Pontiac, Oldsmobile, and Buick models from the 1950s-70s utilizing the standard GM twist-lock oil tube.
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Note: Please verify your valve cover has the "Twist-Lock" style hole (not a rubber push-in) before ordering.
