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Tuning, quick and easy!
If you've ever fine-tuned the vacuum secondary spring on your Holley, you know what a pain it can be to keep disassembling the housing. This quick change kit installs in minutes on all Holley vacuum secondary carbs to let you change springs with the flip of a lever!
These kit, put together by JEGS Professionals, include a Quick Change Spring Kit & Holley Springs - 510-20-13
These kit, put together by JEGS Professionals, include a Quick Change Spring Kit & 
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