SKU: 27413499520

Fleece Performance 03-07 Dodge 5.9L / 04.5-12 6.7L Cummins Coolant Bypass Kit (03-07 Manual Trans)

Sale price$175.39 Regular price$194.88
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Ships within 48 hours · Estimated delivery Aug 1 - Aug 6

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Description

Fleece Performance 03-07 Dodge 5.9L / 04.5-12 6.7L Cummins Coolant Bypass Kit (03-07 Manual Trans)Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5. 9 6. 7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary

Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits: Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Why do I need a Fleece Coolant Bypass? One of the biggest issues on the 5.9/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature / over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.

Installation Instructions
Warranty
  • Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation
  • Ensures consistent temperatures across all cylinders
  • Lowers coolant temperature at the rear cylinders
  • Prevents damaging coolant pressure build up

This Part Fits:

Year Make Model Submodel
2003,2005-2007 Dodge Ram 2500 Laramie
2003-2007 Dodge Ram 2500 SLT
2006 Dodge Ram 2500 Sport
2003-2007 Dodge Ram 2500 ST
2006-2007 Dodge Ram 2500 TRX4
2003-2007 Dodge Ram 3500 Laramie
2003-2007 Dodge Ram 3500 SLT
2006-2007 Dodge Ram 3500 Sport
2003-2007 Dodge Ram 3500 ST
2007 Dodge Ram 3500 TRX4
Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 27413499520

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MBR
Massapequa, US
★★★★★ 5
Great quality
Color: Rustic Brwon, Size: 16in
Hassle but they work great. I love the color, the thickness and quality. They do have some weight but in my opinion, I prefer that. Right now the four shelves are holding up my WiFi routers and remotes. Will buy again
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Reviewed in the United States on May 4, 2026
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Maxisss
Pawtucket, US
★★★★★ 5
Good quality shelves
Color: Walnut, Size: 24in, Color: Walnut, Size: 24in
These shelves are gorgeous in person. Yes, they're darker than the listing pics, but I actually prefer it. The grain is beautiful, they came well-packed, and mounting them was no trouble at all. Now I've got display space that feels both stylish and practical. Definitely worth it!
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Reviewed in the United States on February 9, 2026
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Laoneil1004@gmail
Chelsea, US
★★★★★ 5
AWESOME
Color: Rustic Brwon, Size: 16in
EASY INSTALL, I WILL BUY MANY MORE
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Reviewed in the United States on May 7, 2026
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Louis G
Lexington, US
★★★★★ 5
Easy to install, very tough!
Color: White, Size: 16in, Color: White, Size: 16in
Seriously, scoring these shelf stands for $30 feels like an absolute steal! Four chunky wood boards with metal T-brackets that actually feel substantial - way sturdier than those flimsy IKEA ones I used to have. My old cheapo stands warped after half a year, but these hold up like a champ - I've got like 15 heavy textbooks stacked on them right now. Love the little details too: rounded edges so you won't scrape your hands, and rubber grip strips on the bottom. They look legit fancy in my living room as bookshelves and even class up my kitchen herb garden. My friend thought they were some high-end designer furniture! Honestly, the craftsmanship at this price puts my old $60 wooden shelves to shame. Already told my DIY group chat about these - trust me, you can't go wrong!
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Reviewed in the United States on March 13, 2025
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Chad Collins
Grantham, US
★★★★★ 4
Great look. Sturdy.
Color: Rustic Brwon, Size: 16in
Great look if you can get it installed. The sticker paper mounting guides rip so easy so he careful!
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Reviewed in the United States on October 4, 2025

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