Holley Vacuum Secondary Spring Kit Color Coded Set of 7 for 4150 4160 4500

Holley Vacuum Secondary Spring Kit Color Coded Set of 7 for 4150 4160 4500

The Holley Vacuum Secondary Spring Kit is an essential tool for automotive enthusiasts looking to fine-tune their carburetor performance. Designed specifically for Holley 4150, 4160, and 4500 carburetors, this kit includes a set of seven color-coded springs, allowing users to customize the vacuum secondary operation based on their individual performance needs. By adjusting the spring tension, you can achieve optimal throttle response and enhanced drivability, ultimately leading to a more powerful and efficient engine performance.

This kit allows you to adjust the rate at which the secondary throttle plates open, providing the ability to optimize fuel delivery and airflow based on your engine's specific requirements. The color coding of the springs aids in quick identification, making it easier to select the appropriate spring for the desired performance characteristics. Whether you are looking to improve acceleration, fuel efficiency, or overall engine responsiveness, the Holley Vacuum Secondary Spring Kit offers the flexibility needed for personalized tuning.

FITMENT: This Vacuum Secondary Spring Kit is specifically engineered for Holley carburetor models 4150, 4160, and 4500, ensuring a perfect fit. It provides compatibility with various engine setups, making it a versatile choice for both street and performance applications.

Key Features & Benefits

• Includes a set of seven color-coded springs for easy identification and selection.
• Allows for precise tuning of secondary throttle opening for optimal performance.
• Improves throttle response and drivability by adjusting the vacuum secondary operation.
• Enhances fuel efficiency and engine power output through customized tuning.
• Compatible with popular Holley carburetor models 4150, 4160, and 4500.

Shipping. Free on every order, US only. Orders arrive in 2–4 days.

Returns. 30-day returns, except in extreme cases.

Support. Our team is available 24/7 for fitment mismatches or any other reason.

Warranty. Full manufacturer guarantee.