AAD® (05-23) Mopar V8 Billet Aluminum Air Oil Separator Kit
AAD® (05-23) Mopar V8 Billet Aluminum Air Oil Separator Kit
AAD® (05-23) Mopar V8 Billet Aluminum Air Oil Separator Kit
AAD® (05-23) Mopar V8 Billet Aluminum Air Oil Separator Kit
AAD® (05-23) Mopar V8 Billet Aluminum Air Oil Separator Kit


AAD® (05-23) Mopar V8 Billet Aluminum Air Oil Separator Kit

Regular price$295.00
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Compatible: (5.7L/6.1L/6.4L)

2005 - 2023 Chrysler 300

2008 - 2023 Dodge Challenger

2006 - 2023 Dodge Charger

2005 - 2008 Dodge Magnum



Our HEMI AOS Kit has been on the market for years sold under another brand name; we are excited to now offer it directly to our customers!  This proven, exact-fit setup is specifically designed to fit onto your 5.7L, 6.1L, or 6.4L HEMI in any LX/LC platform vehicle.

It features all the great features of our base Air/Oil Separator plus the HEMI-specific billet aluminum bracket with inserts to fit any of the HEMI engines listed above.  There is not a better-fitting, better-performing Air/Oil Separator on the market.

Available in Satin (silver) or Black and kit comes with:

  • Air/Oil Separator with 90-degree Steel Bracket
  • Full set of spare O-Rings and Stainless Fasteners
  • HEMI Bracket and hardware
  • 2 x 1/2" Barbed Fittings
  • 2 x Port Plugs


The All Angles Design/AAD Performance Air/Oil Separator (aka Catch Can) was designed from the ground up to be the most functional, most flexible, and most reliable AOS available.

We worked hard to keep costs under control, but being "cheap" was never the goal - there are tons of inexpensive Catch Can options on the market.  We wanted to build an AOS for the enthusiast who understands the value of keeping oil out of their high-performing engine.

We made ours the most functional Air/Oil Separator on the market by including both a coarse pre-filter (the lower filter on the unit) as well as a finer filter before the outlet.  We further improved functionality by inducing a circular flow path through the unit which accelerates the oil droplets as they go through the filters causing them to either stick to the interior wall, or to the filter element itself - then drain into the reservoir below.  We made both filters out of metal so that they never plug, last a lifetime, and are easy to clean if and when needed.

We made it the most flexible with a 3-piece, modular design.  The top cap and center body can be rotated with respect to each other into any of 8 positions.  This allows you to have your inlets coming from one direction with your outlets going some other direction.  The powder-coated steel mount plate between them can be indexed separately from either of those pieces as well.  So, your mounting options are primarily limited by your imagination (and possibly patience!).

Last but not least, we made it easy to use with our one-of-a-kid twist-off reservoir.  That idea occurred to me one day at the track while slowly un-threading a catch can reservoir full of hot oil and waiting for that last thread to let go so I could tar and feather myself.  With our setup, there is no drama - twist the can clockwise and it's on, counter-clockwise about 10 degrees and it clicks off.  Stainless steel pins, springs, and snap rings make the magic happen and will outlast us all.

So, if you want a cheap catch can - by all means buy a cheap catch can!  If you want the best available, buy an AAD Performance!


All Angles Design is an engineering company focused primarily on new product development and bringing innovation out of the brainstorm and into reality.

That business has grown to include all manner of design projects ranging from custom aluminum extrusion design to electronics and consumer products.  But our passion is and has been making cars go fast.

We've designed and sold products for many of the "big name" players in the automotive aftermarket, but AAD Performance gives us the opportunity to bring great projects directly from the machine shop to our customers.  You get the same impeccable quality, same rugged, functional designs, and the same top-notch customer support that AAD has become known for.  The only thing you lose is some of the high markups and flaky retailers who contribute nothing to the process but passing money around.

We are not brand-specific, we are solution specific meaning we solve real problems for real performance enthusiasts who want more than color-matched lug nut covers.  Our parts are designed and built to perform exactly as expected year after year.  We don't do flashy, we don't do every color under the sun, we don't try to make machined parts look like plastic - we build great performing parts and make customers happy.


Install Guide: