2011-2016 Duramax LML SoCal Billet Aluminum Upper Valve CoverBillet Aluminum Upper Valve Cover for Duramax LLY LBZ LMM engines. Uses stock bolts, gaskets and grommets. Sold as a pair. Optional drill and tap for 12 AN breather holes. These are machined to a mirror like finish. Choose the polished option for that extra bit of sparkle. This is what all of the best dressed Duramax engines are wearing this year!

you want your engine to heat up quicker

2015 - 2018 Ford Dynomite Diesel Stock Reman Injector DDP

Built from heavy duty aluminized steel MBRP's AL Installer Series exhaust systems offer a value price without compromising on the quality build of every componentnt

Our GTX style billet wheel spool fast and make great top end power

7L Sinister Cold Side Charge Pipe (SD-INTRPIPE-6

your P1 Performance Products performance system gets the exhaust out fast

Give your engine a cleaner look by deleting the bulky plastic intake resonator box under the hood and rid yourself of potential cracks which can lead to dirty air intake problems

and install the new components

Banks Dual Heat Capable Monster-Ram improves throttle response and fuel economy by eliminating airflow restrictions

The Mahle Lower Engine Gasket Set includes all the seals and gaskets for the bottom end of your 6

For example

It will still run great on 175s but you won't be able to clean up the top end on a heavy race tune