SKU: 88820234015

Mishimoto Duracore 3.5in to 4in Transition Coupler

Sale price$68.49 Regular price$76.10
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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19

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Description

Mishimoto Duracore 3.5in to 4in Transition CouplerWhen you're fabricating a custom intercooling system, every component in your build needs to pull its weight. Mishimoto DuraCore(TM) Silicone Intercooler Boots are engineered to be the strongest link in your intercooler piping kit. Whether you're routing charge pipes around tight engine bays or connecting mismatched tube diameters, we have the sizes and configurations to match exactly what your fabrication requires. DuraCore(TM) boots are available in

When you're fabricating a custom intercooling system, every component in your build needs to pull its weight. Mishimoto DuraCore(TM) Silicone Intercooler Boots are engineered to be the strongest link in your intercooler piping kit. -- Whether you're routing charge pipes around tight engine bays or connecting mismatched tube diameters, we have the sizes and configurations to match exactly what your fabrication requires. DuraCore(TM) boots are available in straight, straight hump, transition, 45-degree, and 90-degree configurations, with sizing from 3" to 4", giving you the flexibility to complete your piping kit without compromise. Whatever your layout demands, Mishimoto has every size and shape to meet your build. -- DuraCore(TM) technology is the synthetic material comprising the innermost layer of every Mishimoto silicone boot. Compared to standard silicone, DuraCore(TM) delivers superior resistance to heat, pressure, fuel, and oil, effectively extending boot life by preventing leaks and blowouts under high-boost conditions. Each boot is manufactured from five layers of silicone with heat-resistant embedded fibers, and reinforcing rings (where applicable) add structural integrity to keep connections secure under pressure. Hump-style couplers introduce additional flexibility to absorb movement and vibration without compromising the seal. -- You've put serious work into your truck build. Don't let the boot be your failure point. With DuraCore(TM) Silicone Intercooler Boots, it never will be.

User 1
  • Every configuration your custom piping kit demands is covered, with straight, straight hump, transition, 45-degree, and 90-degree options available across sizing from 3" to 4"
  • Mishimoto carries everything your intercooler build needs, from every boot size and configuration to matching clamps, all in one place
  • Sizing from 3" to 4" means no matter what diameter your intercooler piping calls for, there's a DuraCore(TM) boot built to fit
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 88820234015

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Amazon Customer
Port Orchard, US
★★★★★ 5
Good design
Size: 10.5, Color: Cognac, Size: 10.5, Color: Cognac
Nice design and perfect craftsmanship. For the shoe material, the quality is ok.
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Reviewed in the United States on April 11, 2026
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Marina Eshak
Natrona Heights, US
★★★★★ 3
Light but average
Size: 10.5, Color: Black
Three stars. These are very lightweight and seem fine for the price, but the leather felt a bit too thin for what I was looking for. I didn’t even end up trying them on because they just didn’t feel like they would hold up long term. They’re not bad if you need something inexpensive for occasional wear, but I wanted something that would last. It felt like they might scratch easily, so I decided to return these and go with a more expensive option instead.
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Reviewed in the United States on February 2, 2026
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Remo Garrovillo
Boise, US
★★★★★ 5
Good quality
Size: 9, Color: Cognac
Good quality and fit is true to size
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Reviewed in the United States on January 19, 2026
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Tabascoroni
Bozeman, US
★★★★★ 5
Good quality and seem durable for the shorter term.
Size: 9.5, Color: Black
Comfortable. Great for Wedding, Funeral. Not for long term I do not think. Seem almost like patent leather
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Reviewed in the United States on February 1, 2026
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Fahim
Pawtucket, US
★★★★★ 1
Bad, very bad
Size: 8.5, Color: Cognac
They are plastic. The quality is zero bro then I send it to me my refund.
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Reviewed in the United States on June 5, 2026

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