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Mishimoto 2017-2019 Chevrolet Duramax 6.6L L5P Black Silicone product view

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Mishimoto MMHOSE-DMAX-17BK installed angle on vehicle

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Mishimoto 2017-2019 Chevrolet Duramax 6.6L L5P Black Silicone core and end tank detail

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Mishimoto 2017-2019 Chevrolet Duramax 6.6L L5P Black Silicone packaging and included hardware

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Mishimoto 2017-2019 Chevrolet Duramax 6.6L L5P Black Silicone Hose Kit

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Brand: MishimotoSKU / Part #: MISMMHOSE-DMAX-17BK

Regular price: $329.95
Regular price: ~~$363.00~~
Sale price: $329.95
Unit price: per

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Subtotal: $329.95

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Mishimoto 2017-2019 Chevrolet Duramax 6.6L L5P Black Silicone Hose Kit

Subtotal: $329.95

Not sure it fits? Text us your VINSee all fitment

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Overview

This Mishimoto performance aluminum radiator is a direct-fit upgrade for 2017-2019 Chevrolet/GMC applications covering Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, Silverado 3500 HD. It replaces the weak points of the stock part with stronger materials and better flow or cooling so heat, boost and abuse stay under control on street and track duty. AutoTalent lists verified US-market fitment in the table below.

Why upgrade

Whether you're hauling the family fifth wheel or driving out to the job site, you rely on your Duramax to get where you need to go. The factory Duramax L5P radiator hoses are constructed from a mixture of molded rubber and plastic. Mishimoto engineers these kits around real chassis packaging, so hoses, coolers and adapters line up without fabrication on the listed years. Follow the published torque specs and install guide, reuse sensors where instructed, and confirm clearances if you run other supporting mods. Every unit ships with the Mishimoto Lifetime Warranty for as long as you own it.

Features

Direct fit for the 2017-2019 Chevrolet/GMC 6.6L Duramax
Replaces stock plastic connectors with aluminum for greater resistance to heat and pressure
Includes new lower radiator hose O-ring for leak-free install
Constructed from five layers of silicone with heat-resistant embedded fibers
Includes high-quality worm gear clamps for easy installation
Available in black, blue, or red
Pair with Mishimoto Performance Aluminum Radiator for even greater cooling system protection

What's Included

(1) Silicone Upper Radiator Hose
(1) Silicone Lower Radiator Hose
(7) Worm Gear Clamps
(1) Replacement Quick-Disconnect O-Ring
(2) Zip Ties
Mishimoto Lifetime Warranty

Specifications

Part number	MMHOSE-DMAX-17BK
Brand	Mishimoto
Type	radiator
Shipping dimensions	31.1 x 16.4 x 6 in (79.0 x 41.7 x 15.2 cm)
Shipping weight	10.2 lb (4.6 kg)

Fitment Notes

Verified against Mishimoto US applications and dealer listing for 2017-2019 (4 rows). Years extended to 2027 where the US model remains in production.

Vehicle Fitment

Questions about fitment? Call (310) 231-0292 or text (310) 886-3111.
Year	Make	Model	Chassis	Engine
2017-2019	Chevrolet	Silverado 2500 HD	GMT800/900	—
2017-2019	Chevrolet	Silverado 3500 HD	GMT800/900	—
2017-2019	GMC	Sierra 2500 HD	GMT800/900	—
2017-2019	GMC	Sierra 3500 HD	GMT800/900	—

Fitment

Year	Make	Model

Not sure? Text us your VIN and we’ll confirm.

Shipping & returns

Shipping: Orders ship via UPS, FedEx or USPS, from our facility near Los Angeles or directly from the manufacturer. Rates for many items are weight-based and shown at checkout. If you need it by a certain date, text us before you order.

Returns: Unused items in brand-new condition and original packaging can be returned within 30 days of the invoice date, with a 25% restocking fee unless otherwise specified. In some cases we can offer a lower fee with the balance as store credit. Shipping charges aren't refundable in either direction unless approved by AutoTalent.

Not returnable: special-order or custom items, and anything that has been installed, modified or altered.

Cancellations: free if the item is out of stock or we miss the ETA you agreed to. Other cancellations carry a 5% processing fee to cover card fees we can't recover. Special-order items can't be cancelled.

Damaged in transit? Report it to the carrier and to us within 48 hours, keep all packaging, and don't send anything back without our written approval.

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