From the Fleece Garage
How to return your Core to Fleece Performance Engineering
We want to help you get as much of the core charge back as possible. Following these steps will help ensure we can do that!
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From the Fleece Team: Protect your new fuel system investment: Why fuel tank inspection matters before installation.
The fuel tank is like a window into your fuel system. Inspecting the fuel tank is the single best way to gauge its condition. It is for this reason that when installing every PowerFlo or SureFlo, we recommend taking the time to inspect and clean the fuel tank. This guide will show you how.
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Ditch The 6.7L Power Stroke’s Furnace-Style Fuel Filter For This Upgraded Unit
Dropping a fuel tank for any kind of service or install can be a massive headache. The Fleece Performance new drop-in fuel filter assembly for the 6.7-liter Power Stroke can be done with the tank in place and without a lift.
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Ask Fleece: Why does my turbocharger have a high-pitched squeal?
If your turbocharger is making a high-pitched squeal or screech, its more than like a drive pressure leak - here are some tips from our team of experts on how to troubleshoot.
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Product Spotlight: Intake Horn & Grid Heater Kit for the 6.7L Cummins
This one kit fits 2007.5-2024 2500/3500/4500/5500 6.7L Cummins engines – the broadest coverage of any kit on the market! We make it easy - no need to worry about being unsure if you’ve selected the right kit for your truck.
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Why your 6.7L Ford Power Stroke needs this Injector Return Line Repair Fitting
The Aftermarket Injector Return Line Fitting Every 6.7L Ford Power Stroke Needs. Trade your 6.7L Power Stroke’s failure-prone, plastic injector return line fitting in for a heavy-duty aluminum, double O-ring sealed replacement from Fleece Performance Engineering.
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Pro Tip: Boost leak check your charge air system after a turbocharger installation
After installing one of our turbos, our team of experts recommends a boost leak test. It's worth the extra time as an air leak could cause reduced power, poor fuel economy, increased exhaust gas temperatures (EGTs) and turbo lag.
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All Lights On (ALO) Troubleshooting Tips
The installation of your All Lights On® from Fleece Performance Engineering should be easy to complete in about 10 minutes. In the event that you run into some problems, our team has some great tips get your truck illuminating the road ahead!
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Quality Diesel Performance | Dyno competition and Show & Shine
Fleece Alert! Come See Us at Quality Diesel Performance
May 23, 2026
Columbia City, IN
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Ask Fleece: How to Set Valve Lash on a 5.9/6.7L Common Rail Cummins
During the installation of your Fleece Performance Dodge Cummins 5.9L & 6.7L Cylinder Head, follow this procedure to re-lash the valves.
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IMPORTANT: We will not be shipping product between the dates of July 5th and July 11th. All orders will be processed and shipped the week of July 12th.
While we are closed take advantage of 5% off MSRP!






