Mishimoto 17-19 GM 6.6L L5P Intercooler Pipe and Boot Kit Polished

Mishimoto 17-19 GM 6.6L L5P Intercooler Pipe and Boot Kit Polished

Marsoni

M251S

$299.48

Get it in 3 business days with 1 day shipping. Friday, May 29

Mishimoto 17-19 GM 6.6L L5P Intercooler Pipe and Boot Kit PolishedImprove the power and efficiency of your 2017 2019 Chevrolet GMC 6. 6L Duramax L5P with our Mishimoto intercooler pipe and boot kit. The factory L5P intercooler pipes are a measly 2. 5in diameter that chokes the engine, while tight bends and a resonator on the hot side create even more restriction. The Mishimoto intercooler pipes are 3in in diameter throughout with smooth transitions to significantly increase airflow, resulting in more power

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I have them in every color and used to get them from Sams, but they stopped selling them and I was lucky to find them on Amazon. Got all colors again. They stay, it's all I'm gonna say! And don't show in any of my tennis shoes. Absolutely love them and wear them until they get holes. They last a LONG time too. They're on the thin side and my foot loves them because they tend to get hot. There's no shrinking, they wash great with exception of the white ones I couldn't manage to keep white - they turned a bit greyish.

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Reviewed in the United States on January 4, 2026

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Christy F

Louisville, US

★★★★★ 5

Great socks

Size: Medium, Color: Pink - 647

Well-made and comfortable to wear. Great for golf and other outdoor activities. Like them because they do not show above shoes.

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Reviewed in the United States on April 19, 2026

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Cait E

Carnegie, US

★★★★★ 5

These ACTUALLY stay put all day long - I was skeptical, but am so glad I took a chance on these

Size: Medium, Color: (014) Halo Gray / Halo Gray / Castlerock

I was so skeptical about whether these would stay on my feet all day without sliding down into my shoe - I’ve tried so many socks in the past with the silicone strip on the heel which failed. I’ve owned these for a couple months now and they have never slipped down - they stay put all day! I love the variety of colors to choose from, and the value per pack is great since six pairs come per pack (I thought it was only three when I first purchased and was pleasantly surprised by the additional pairs). They also have perfect thickness - not too warm to wear during the summer months with sneakers; I live in a tropical climate, though, so I’m not sure how they will do in cooler climates. I’ve washed each pair once or twice and the color and quality of the silicone has stayed so far (knock on wood). Overall: high recommend based on my experience so far!

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Reviewed in the United States on September 13, 2025

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Maggie Vega

Boise, US

★★★★★ 5

Great fit!

Size: Medium, Color: (403) Washed Navy / Washed Navy / Blue Smoke

Great quality!

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Reviewed in the United States on May 15, 2026

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