Mishimoto 17-19 GM 6.6L L5P Duramax Intercooler - Black

Mishimoto 17-19 GM 6.6L L5P Duramax Intercooler - Black

Marsoni

M251S

$685.98

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

Mishimoto 17-19 GM 6.6L L5P Duramax Intercooler - BlackSKU: MMINT DMAX 17BK UPC: 840197701454 Mishimoto 2017 2019 GM 6. 6L L5P Duramax Intercooler Black Engineered for 2017 2019 Chevrolet Silverado 2500 HD 3500 HD and GMC Sierra 2500 HD 3500 HD with 6. 6L L5P Duramax diesel this Mishimoto intercooler delivers maximum cooling to combat high intake temperatures that sap power and risk engine damage. The bar and plate design with cast aluminum end tanks handles extreme boost and heat while slashing airflow

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I noticed the engine running much quieter using this oil. The pour mouth is pretty unique for this brand, you can just open the interior cap, pull up the accordion neck and pour into the engine which provides better control over traditional wide mouth, thus less messy. This oil rarely goes on sale and is typically 1.5x to 2x more expensive than the more common US brands.

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Reviewed in the United States on August 28, 2025

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Cooch

Massapequa, US

★★★★★ 5

Best synthetic oil BMW

Excellent synthetic oil BMW 328I

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Reviewed in the United States on February 6, 2026

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Malu buys everything

Omaha, US

★★★★★ 5

Last long

Love it ! Since I have a BMW this oil it’s good for it . The Price is good . Last long . No engine noise Or oil burning. Even the color looks good after 3 months.

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Reviewed in the United States on March 9, 2026

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Brian Classen

Alexandria, US

★★★★★ 5

FRIENDLY REMINDER Don't overtighten the bolts

MUCH better than the cheap plastic OEM part, Just a reminder though, these thread into an aluminum block so be very careful to start them finger tight first, then evenly tighten both bolts to push the fitting into the chamber. If you don't, it will slightly misalign and you run the risk of stripping the threads. The one comes with the replacement o ring, and be sure to get some antifreeze on that seal prior to attempting to push it into the chamber. IT IS A TIGHT FIT, but that's what you want, so just be careful. You might also want an extra hose clamp on hand, as the one that came with this began to bend as it got tight, so I had to replace it for peace of mind. Overall, great product though.

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Reviewed in the United States on January 9, 2026

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Dklnyc

Pawtucket, US

★★★★★ 5

Strong product

Great quality

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Reviewed in the United States on March 11, 2026