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Ships within 48 hours · Estimated delivery Aug 3 - Aug 8
For Your Every Summer RSVP, with Code: SUMMER15
Description
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. 5" diameter that chokes the engine, while tight bends and a resonator on the hot side create even more restriction. The Mishimoto intercooler pipes are 3" in diameter throughout with smooth transitions to significantly increase airflow, resulting in more power potential.
Improve 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 2.5" diameter that chokes the engine, while tight bends and a resonator on the hot side create even more restriction.The Mishimoto intercooler pipes are 3" in diameter throughout with smooth transitions to significantly increase airflow, resulting in more power potential. Our hot-side pipe also eliminates the stock resonator for maximum flow. Combined, the Mishimoto intercooler pipes are up to 55% less restrictive than stock.Both the hot-side and cold-side utilize a two-piece design for ease of install. To connect the pipes to our Duramax, this kit also includes our silicone boots with DuraCore™ technology. Mishimoto DuraCore™ technology is the synthetic material that comprises the innermost layer of all Mishimoto silicone diesel boots. Compared to normal silicone, DuraCore™ provides superior resistance to heat, pressure, fuel, and oil. This effectively increases the life of our boots by preventing leaks and blowouts.To add even more reliability, this kit includes Mishimoto constant-tension T-bolt clamps for accurate and consistent holding power. Our cold-side intercooler pipes also feature a CNC-machined quick-disconnect fitting with new O-ring and spring clip to ensure a secure and leak-free fit. Unlike other available pipes on the market, our pipes retain the intake air temp harness mounting location for safe and secure wire routing, just as Chevy/GMC intended. Our intercooler pipes also incorporate two bungs that can be drilled and tapped for sensors, so you can easily monitor your L5P's performance.The Mishimoto 2017-2019 Chevrolet/GMC 6.6L Duramax L5P intercooler pipe and boot kit is a direct bolt-on upgrade and is available in a polished or wrinkle black powder coated finish. Like all our Duramax products, this kit includes our Mishimoto Lifetime Warranty.Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 4
Comfortable fit, but the pattern looks a bit dated
Size: XX-Large, Color: Dark Green Stripe Knit
I grabbed this in an XXL looking for a comfortable, breezy shirt for the summer. The actual fit and feel of the shirt are really nice. It's a true relaxed fit that doesn't pull tight across the chest or stomach, and the knit material is surprisingly soft and breathable, kind of like a lightweight summer sweater. It definitely doesn't feel like stiff, cheap cotton. My main issue is just the design itself. I ordered the dark green stripe, and in person, the pattern just looks a bit dated, almost like a retro bowling shirt or old upholstery rather than a modern vacation button-down. I'm not the biggest fan of how the stripes look on me, so it has basically become a shirt I just wear lounging around the house instead of actually wearing it out anywhere nice.
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Reviewed in the United States on June 9, 2026
★★★★★ 5
Perfectly fine
Size: Large, Color: Dark Blue Stripe Knit
Comfortable and just perfect
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Reviewed in the United States on June 9, 2026
★★★★★ 5
Airy, 100 % cotton, crochet, button-down shirt
Size: XX-Large, Color: Dark Blue Stripe Knit, Size: XX-Large, Color: Dark Blue Stripe Knit
This feels super soft and airy. Even though it’s made of 100% cotton, it doesn’t feel heavy at all. I love the contrast between the dark blue and white. The fit is slightly boxy, and it doesn’t wrinkle whatsoever. It’s absolutely worth the price. I can’t get over how good-quality, versatile, lightweight, and soft this shirt is. I highly recommend it as a fun layering piece or a stand‑out top.
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Reviewed in the United States on May 29, 2026
★★★★★ 4
The Materials Are Very Soft And Durable
Size: Large, Color: Dark Blue Stripe Knit
It is ideal for warm weather or casual nights out because of its relaxed fit, which is comfortable without appearing overly baggy, and the soft, light knit material. The button-down style preserves the relaxed vacation vibe while giving it a polished, clean appearance. It looks great with both jeans and shorts.
The fabric's ability to breathe throughout the day was one of my favorite things. The short sleeves make it perfect for everyday casual wear, cookouts, and vacations. It is comfortable enough to wear for hours without feeling heavy or stiff. For the price range, the buttons and stitching appear to be well-made as well. Without exerting too much effort, the shirt's fashionable appearance draws praise.
The fit can run a little larger depending on your typical size choice, which is the only reason I am not giving it a perfect five stars. Sizing down can be beneficial if you prefer a more fitted appearance. Apart from that, it is a fantastic, adaptable shirt that blends ease of care, comfort, and style. A great complement to a casual summer outfit, without a doubt.
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Reviewed in the United States on May 2, 2026
★★★★★ 3
Not my cup of tea.
Size: X-Large, Color: Black
The sweater seemed to be well made and fit me well. The color and style were nice and it's a comfortable material, but it's just not my style. The weave is so very open, it feels like I'm wearing an afghan from the back of the sofa. That kind of defeats the purpose of a sweater for me.
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Reviewed in the United States on May 15, 2026
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