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Your cart is empty.Dorman offers a comprehensive line of Vacuum Caps for almost any automotive repair job. All our Vacuum Caps are constructed of high-quality materials for long-lasting durability.
Daniel Benoir
2025-09-01 15:45:33
I was missing some vacuum port plugs for my Holley carb. Kit included all replacements. Good quality rubber. No problems and solved my vacuum leak issue.
Alexander
2025-08-24 17:43:34
would buy more your going to need them
Deriter
2025-08-20 18:59:51
Good stuff , not thin or cheap
Chris Parrillo
2025-08-14 21:45:26
Used the 1/4†short to plug the air intake breather connector on 2008 Trailblazer. The LS model doesn’t have a breather tube just a nipple plug. Looked on GM parts websites and auto parts stores with no luck. The 1/4†is a perfect nipple plug. 10 second install now idles lower and quiter, likely better power and mpg.
Daniel Benoir
2025-07-22 14:31:18
I was missing some vacuum port plugs for my Holley carb. Kit included all replacements. Good quality rubber. No problems and solved my vacuum leak issue.
Alexander
2025-07-12 11:35:25
would buy more your going to need them
Deriter
2025-07-06 16:01:30
Good stuff , not thin or cheap
Chris Parrillo
2025-07-01 19:55:30
Used the 1/4†short to plug the air intake breather connector on 2008 Trailblazer. The LS model doesn’t have a breather tube just a nipple plug. Looked on GM parts websites and auto parts stores with no luck. The 1/4†is a perfect nipple plug. 10 second install now idles lower and quiter, likely better power and mpg.
J peters
2025-06-29 13:41:05
Nice assortment and being made of rubber, they should last.
Jerryb1
2025-06-28 10:01:58
Good quality and work as they should
rustyfury
2025-06-22 15:14:52
I have used these caps since I bought my first car in 1980.They still work, they are still cheap, but the quality is not the same as they used to be.These will work for 2 maybe 3 years, then need to be replaced. They dry, crack and cause a vacuum leak within that few year span. They used to last as long as the vehicle.
Mike in Nashville
2025-06-15 16:47:49
Buying an assortment makes more sense than buying one size, it you can. I have only needed one cap so far. As I clean under the hood I will probably use more.
Ray Landry
2025-05-21 13:13:04
Just what you would expect……good rubber caps for my use
Craig
2025-05-17 17:40:17
As described
Mario Roque
2025-05-14 19:16:36
needed only one piece and worked as a charm; worked as needed - to stop leakage on the power steering reservoir during flushing. does not need the rest but who knows that i might need it sometime somewhere.
Jeff3079
2025-05-09 11:34:25
Fit parfaitement sur le carburateur
stephen marchand
2025-05-06 10:36:42
Work good but wouldn’t recommend for automotive applications because the heat cycles will make them crack
J peters
2025-04-15 15:50:31
Nice assortment and being made of rubber, they should last.
Jerryb1
2025-04-04 16:45:46
Good quality and work as they should
rustyfury
2025-03-21 14:42:18
I have used these caps since I bought my first car in 1980.They still work, they are still cheap, but the quality is not the same as they used to be.These will work for 2 maybe 3 years, then need to be replaced. They dry, crack and cause a vacuum leak within that few year span. They used to last as long as the vehicle.
Mike in Nashville
2025-03-03 14:50:12
Buying an assortment makes more sense than buying one size, it you can. I have only needed one cap so far. As I clean under the hood I will probably use more.
Ray Landry
2025-02-22 13:00:44
Just what you would expect……good rubber caps for my use
Craig
2025-02-09 14:06:38
As described
Mario Roque
2025-01-27 17:32:17
needed only one piece and worked as a charm; worked as needed - to stop leakage on the power steering reservoir during flushing. does not need the rest but who knows that i might need it sometime somewhere.
Jeff3079
2025-01-23 11:24:24
Fit parfaitement sur le carburateur
stephen marchand
2025-01-09 17:27:35
Work good but wouldn’t recommend for automotive applications because the heat cycles will make them crack
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