Down South Diesel, LLC

06/17/2026

We will be shutting it down for the weekend this Friday, 6/19 at 1 pm. We will be back at it at 7 on Monday. Thanks!

06/11/2026

3 different pictures, 3 different trucks! L5P air filter, 6.7 Powerstroke pressure control valve and 6.7 cummins cp4. Turbos are large vacuums and suck up a ton of air. If you are in dusty environments, you need to check your air filters often. CP4’s and our $5 a gallon of lake water fuel just don’t mix. If you have a CP4…. Throw it in the trash! Fleece and S&S have solutions to the problem and we will be happy to help.

05/27/2026

We have these in stock and they make a world of difference in looks. Worth every penny!

05/18/2026

05/15/2026

Phones and internet are down this morning. They are hoping to have them back up mid morning. You can reach us through email at [email protected]

05/04/2026

Friday night win with Southern Pullers! Glad JW was able to put ole red in the winners circle for Hank!

12/27/2025

The best upgrade you can do to a 6.7 Powerstroke. Until we can get some lubricity in our fuel, your CP4 is a ticking glitter bomb. Let us know if we can help prevent you from becoming another victim of a failed CP4!

Install confidence with the S&S Diesel Motorsport Ford 6.7L DCR Pump Conversion. Designed as a true direct drop-in with OE fit and function, the DCR is the proven solution for Ford Super Duty owners looking for a reliable CP4 replacement.