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The Moroso carburetor cap for Holley 4150 features a 5-1/8 inch diameter neck and is molded from high-impact plastic. Intended as a direct-fit cap for Holley 4150 carburetor necks of that diameter, this cap offers a durable plastic construction to cover the carburetor opening and protect internal components when the air cleaner is removed or during storage.
Moroso Carburetor Cap - Holley 4150 - 5-1/8in Diameter Neck - High Impact Plastic
