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Your cart is empty.Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy Nascar Cup team and nearly every NHRA Pro–Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies we can give you the edge you need over the competition!
William
Reviewed in the United States on May 10, 2023
Pricey but they are worth it. Good variety of sizes.
Bryan
Reviewed in the United States on March 6, 2021
If you need to plug vacuum lines on an engine... this is the one. Various sizes that fit most any standard lines.
Bobcat
Reviewed in the United States on October 29, 2019
Nice assortment. Check sizes to ensure they meet your needs. This is one of those things it's better to have and not need than need and not have.
wdritchey
Reviewed in the United States on June 10, 2018
Great kit, used to block off some vacuum leaks from an engine swap project. Some of them are a little stubby, but get the job done. Nice to keep some on hand too.
BigDan
Reviewed in Canada on June 1, 2017
Nice product very handy being multiple sizes
Francis Beaudoin
Reviewed in Canada on November 1, 2016
good
gunny
Reviewed in Canada on June 1, 2015
It is what I was expected, and it was a rewarding experience.JG
Jimothy
Reviewed in the United States on February 10, 2015
I used one of the plugs for my 1999 Mazda Miata cruise control delete, to plug the CC vacuum port on the intake manifold. It holds and seals tight. Seems to be good quality rubber/material, time will tell how well they hold up.
JR
Reviewed in the United States on October 4, 2015
This kit works for all sorts of carbs, not just Holley.I bought it for my Rochester, which was attached to a switched-in engine to a 50+ year old truck. I needed just a few fittings and things fit so well my Rochester carb started acting better.
John C Phillips
Reviewed in the United States on September 24, 2014
Various sizes to fit all different ports that you need to close off. Excellent price also
Jay F.
Reviewed in Canada on November 17, 2014
Nice assortment of vacuum caps. Only needed one but it's good to have extras on hand.
Hydra
Reviewed in the United States on December 17, 2013
I only needed 1 size for 4 ports because I have dual carburetors. If only they would sell individual sizes instead of variety kits. What a waste for the consumer.
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