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Vacuum Secondary Spring Kit. The Edelbrock 1960-72 Fullsize Ford-Mercury Edelbrock 12412 Vacuum secondary spring kit includes 7 springs designed to optimize the performance of Holley 4150, 4150HP, 4160 series, and various Demon carburetors. This kit is essential for tuning the vacuum secondary throttle response, allowing for precise control and improved drivability. It is commonly used in both street and racing applications where effective carburetor response is critical.
_x000D__x000D_Construction and Appearance. The springs are made from durable steel, providing consistent tensile strength and longevity under demanding conditions. The finish features a corrosion-resistant coating to withstand typical automotive environments, ensuring reliable performance over time.
_x000D__x000D_Installation. Installing the spring kit is straightforward and requires no special tools or modifications, making it accessible for most experienced enthusiasts. Proper installation ensures optimal carburetor function and throttle response tuning.
_x000D__x000D_Warranty. This product includes a 12-month warranty against manufacturing defects. Application. The kit is designed specifically for Holley 4150, 4150HP, 4160 series carburetors, and various Demon models, precisely engineered to fit and function without modification.
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