PPE BILLET ALUMINUM ENGINE OIL FILLER CAP 114003000 (FITS 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 GM GMC DURAMAX 6.6L)

Fit good

This cap is really clean and shiny . Fit is real snug . Adds a nice touch to the engine bay .

Looks and feels amazing

Some reviews said it did not include the o-ring. But the one I received did! Also it was a perfect snug fit. I had a different aftermarket plastic one that was super loose and would at times pop off. No I don’t have a bunch of blow by. Just the previous cap was junk. This however fit perfect on my 03 LB7 duramax.

Another huge quality machined piece from PPE. Looks great with the rest of their stuff under the hood of my truck. However in typical PPE fashion the o-ring is not included. I was able to transfer mine from my old oil cap without issue but for the price PPE charges for billet machined parts they should include o-rings. They do the same crap with their race valve fuel pressure relief plug, no o-ring included, however at least they sell that o-ring. I didn't see this listed separately.

Very happy

Just a heads up, says it will fit 2017 l5p and it does not. OEM cap has 2 grooves. Ppe has 1

It fits. Would be nice if it came with an o-ring.