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Moroso Air/Oil Separator (05-10 GT)

18 Reviews
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  • Item #14443
  • MPN# 85477

  • Market Price $175.99
  • You Save 16% ($29.02)
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  • Reduces Engine Sludge
  • Polished Billet Aluminum Housing
  • Includes 36" Rubber Hose and Fittings
  • Easy Installation
  • Fits 2005-2010 Mustang GT
Reduce Sludge. Reduce engine sludge in your 4.6 by diverting nasty "blow-by" (a combination of exhaust gases and oil) into a Moroso Air/Oil Separator a.k.a. "catch can" where the contaminated oil is separated out from the exhaust gases before being recycled back into the intake to be re-burned, thus preventing the used oil from re-enter the system to gum up your engine.

Superior Quality Materials. The body of this Moroso Air/Oil Catch is constructed from billet aluminum for strength and has a polished finished to complement your Mustang's engine compartment. The Moroso separator features 90° inlet and outlet fittings, and includes a 1/2" thick rubber hose.

Application. This Moroso Air Oil Separator is specifically designed to fit the 2005 to 2010 GT and Bullitt Mustangs with the 3 valve 4.6L modular engine.

Fitment: 2005 2006 2007 2008 2009 2010 Details

What's in the Box
  • (1) Tank Body
  • (1) Billet Cap
  • (1) Ball Valve
  • (1) 90 Degree Drain
  • (1) Stainless Steel Bracket
  • (2) 90 Degree Barbed Fittings
  • (1) Length of 1/2" Hose
  • (1) Drain Cap
  • (2) 1/4 x 20 SHCS x 5/8
  • (1) 1/4 x 20 SHCS x 1
Installation Info
Will it fit my Mustang?
  • Bullitt - 08, 09
  • GT - 05, 06, 07, 08, 09, 10

Most Helpful Reviews

Quality Product

Nice chrome and quality construction. Some complain about the rubber hose but it worked nicely for me. I have an M90 and there was plenty to reach to the back of the Supercharger for connection the first ...

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Helpful (1)

Great Concept

It's a good idea if you're one of those people like me who likes to give it a little every now and then... I bought it when i replaced my intake manifold with the FRPP manifold and saw oil dripping out ...

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Helpful (2)

Overall Rating 4.3 out of 5 stars
Read All 18 Reviews

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1 Questions / 1 Answers

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Is it necassary for two of these for the driver and passenger side pcv valves or just one?


  • It is not necessary to have two Oil Separator's on your Mustang. One Oil Separator will do a great job at filtering out the oil in the vapors that can travel into the intake.


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Customer Reviews (18) Write a Review

Overall Rating 4.3

out of 5 stars

  • 4/5

    May 11, 2012

    Quality Product

    Nice chrome and quality construction. Some complain about the rubber hose but it worked nicely for me. I have an M90 and there was plenty to reach to the back of the Supercharger for connection the first connection with plenty of hose left for the valve cover connection. Used the factory PCV vent hose connectors. Easy to cut the tube off and reuse the factory end connectors. Used Loctite Thread SEALANT not thread locker on the brass fittings and make sure you pay attention when buying the thread Sealant all the packages look the same. Teflon tape may work but the thread sealant is better for sure. Its also High temp rated. I drilled 2 holes in my Steeda CAI Box which was a nice alternative mounting location. Check out the pick... 100 miles on the car will drain it at 500. JV


    Year: 2007 Submodel: GT Las Vegas

    Helpful (1) (0)

  • 4/5

    September 16, 2013

    Great Concept

    It's a good idea if you're one of those people like me who likes to give it a little every now and then... I bought it when i replaced my intake manifold with the FRPP manifold and saw oil dripping out of the inside when I set the old manifold on the ground. I bought this one over the JLT separator because with the 1.5" that you're supposed to cut off the stock vacuum hose I figured there wasn't enough room based off the the JLT photo. I emptied it at 2k miles and it was almost full. My car isn't turbocharged or supercharged either, so if you put it out of your mind because of the people saying it's for engines with forced induction I say go for it anyway, it's not very expensive and keeps quite a bit of oil out of the wrong places in your engine. Only downside is the spout is in an awkward location to drain...


    Year: 2009 Submodel: GT

    Helpful (2) (0)

  • 2/5

    October 13, 2015


    I'm disappointed because you have to cannibalize the existing PCV tube just to get the fittings. For the money paid, these fittings should have been included. And the mounting bracket is not stainless steel as advertised, it's just a piece of stamped steel that I'll have to paint to keep from rusting. The chromed canister will look good under the hood, which is the only reason I'm not returning this. I'd like to know the capacity of the unit without having to pour some water into it. "Check it after 1000 miles" is pretty vague.


    Year: 2010 Submodel: GT fl

    Helpful (1) (0)

  • 4/5

    April 17, 2012

    Another Excellent Moroso Product

    I couldn't believe the amount of oil sitting in my air intake manifold when I removed it to place the Edelbrock Eforce supercharger. I had read about PCV flow, but never really had a visual of the amount of oil returned to the combustion chamber. With that said, I didn't want my new supercharger rotors all gunked up with oil so I ordered one of these. I am really happy with the purchase. The product is well made and looks very nice. All the parts were included to make this a simple install. Several tips I would like to pass along: - Test fit everything before cutting the hose - lube the stock PCV fittings before trying to put them in the new hose. - Use a heat gun to allow the hose to stretch easier when placing the PCV fittings. - Allow time to paint the steel bracket that is supplied. I have not had it on my car long enough to provide any more insight, but I do feel it was worth the money due to function and quality of construction.


    Year: 2008 Submodel: GT Ohio

    Helpful (1) (0)

  • 3/5

    January 30, 2012

    High quality let down by cheap fittings and bracket

    I was extremely impressed with the quality of the aluminum catch can. It's simply beautiful. The fittings that were included had damaged threads. They were shipped and packaged well, but it looks like they were mishandled at the factory. I couldn't screw any of them in without risking damage to the aluminum catch can's threads. I took my time and careful screwed them in, and backing out after half a turn. It pulled out lots of aluminum filings. Had the fittings been in better condition, I should not have needed more than 10 minutes to assemble the can. It took me 30 because of the poor state of the threads on the fittings. The bracket looks like a complete joke. It doesn't even look like it was made by the same company. I ended up painting mine black. I should also mention that, without adjustment, the can will interfere with the factory air-box. As it sits, I will need to unbolt the catch can to remove the air filter. It's not a big deal, but I will probably try to fabricate a new bracket at some point. Overall all, I feel this is a product with great potential that misses the mark.


    Year: 2006 Submodel: GT

    Helpful (1) (0)

    • Response from AmericanMuscle

      Lisa , Content Specialist

  • 4/5

    November 21, 2011

    great product

    This is a great product. Although I say it's great I am really disappointed that Moroso didn't take the time to put a finish on the bracket. They could have at leat painted it or used billet aluminum. I ended up having to etch prime and paint the bracket myself. For what you pay for it I think it sould have had a better finish!! The installation was very easy and after I painted the bracket it looks awesome. I would recommend this product to anyone wanting to enhace the look of their engine bay.


    Year: 2007 Submodel: GT va

    Helpful (1) (0)

  • 5/5

    September 29, 2011

    This is a quality product.

    I received this item just a few days after ordering it. Very pleased with the quality. I did have to upgrade to braided lines, I thought they looked a little more sporty.


    Year: 2006 Submodel: GT kernersville,NC

    Helpful (1) (0)

  • 5/5

    August 17, 2011

    Works and Looks Great!

    Definitely needed this item on my supercharged 4.6 litre Shelby GT, but normally aspirated engines will benefit as well. Instructions were spot-on and the install only took about 45 minutes using standard hand tools. (You will have to cut-up your stock PCV hose to remove the connectors - but this isn't difficult) Nice looking billet finish adds a little bling under hood - I'm considering a second one for the passenger side!


    Year: 2007 Submodel: Other

    Helpful (1) (1)

  • 5/5

    October 24, 2013


    this is not only functional but looks great under the hood. simple to install very since addition any stang


    Year: 2007 Submodel: GT Endwell, NY, USA

    Helpful (0) (1)

  • 4/5

    May 19, 2012

    Not Bad

    I got the oil seperator quick as always and it looked great coming out of the box. When assembling I noticed the threads are very poor to say the least. They did not screw in all the way nor did they go in easy, there were burrs everywhere, after a little tlc they went in but not the way you would want them to. The mount looked poor so i painted it black but it also does not fit properly on the strut tower as my car has the vapor managment thing mounted in that area. Also make sure you replace the hoses with proper ones, the ones that come with the kit are trash. Other than that the seperator works great and polishes up real nice. I would definitely reccomend it for anyone with a F/I setup like mine, just be prepared to do some minor modifcations.


    Year: 2005 Submodel: GT

    Helpful (0) (1)

  • 4/5

    March 23, 2012

    Great Oil Separator, Cheap Hose

    The Moroso Air/Oil Separator is a great product and is a must have if you have a supercharged application. In 1000 miles it kept about a tablespoon of oil from going into the air intake. The install was easy. The only reason I gave it four stars is because of the hose that's supplied with it. I recommend picking up some better fuel line hose that won't collapse.


    Year: 2008 Submodel: GT

    Helpful (0) (1)

  • 4/5

    August 03, 2016

    nice piece!

    This is a very nicely made piece. I could not mount it as indicated by the instructions because my car has a monte carlo bar tying the shock towers together. I cut off the tower mount flange, drilled two holes in the bracket and monte carlo bar and mounted it on the bar. Ever thing else worked as advertised.


    Year: 2008 Submodel: GT

    Helpful (0) (0)

  • 5/5

    May 24, 2015

    Moroso catch can

    Nice piece, easy install. It should be common sense but the instructions don't say anything about using sealant on the threaded fittings. Installed mine in a different location than the bracket was set up for because my s/c intakr pipe was in the way.


    Year: 2006 Submodel: GT FL

    Helpful (0) (0)

  • 5/5

    May 13, 2013

    Moroso Air/Separator Easy Install

    This Moroso Air Oil Separator. Keeping Dirty Oil out from the Intake.highly Recommended for your Mustang


    Year: 2007 Submodel: GT mississauga, ontario canada

    Helpful (0) (0)

  • 5/5

    March 19, 2013

    Good Product

    As always American Muscle was fast with shipping. Ordered the part on Saturday night and it was on my doorstep on Tuesday. This is why I love ordering from American Muscle! The Separator itself was well packaged. The instructions say to use thread sealant on the threads, just wish that they would have included a tube in the box, but 5 bucks later I was good to go. went together easy, just be careful with your tools as the aluminum and brass get tool marks very easy. only marred the petcock an the drain tube, so its not like anyone will see it anyway. The lack of sealer is nothing to do with AM, maybe ask Moroso to toss a tube into the box. The bracket to mount it to the shock tower comes unpainted in bare metal. the instructions say that it is stainless steel, but regardless I painted it anyway. Regardless it is an extremely well made product. I recommend it to anyone looking for an Oil Separator. The instructions are detailed on how to get the factory fittings you need and installing it in the car. Assembling the brass fittings is a no-brainer. Ran out of daylight but the install will be tomorrow afternoon. I will check to see how well it works after 1000 miles, but I have a good feeling that it will do an awesome job keeping my intake clean.


    Year: 2005 Submodel: GT

    Helpful (0) (0)

  • 5/5

    January 28, 2013

    Works on the V6 Model as well.

    This is a nice addition if you have a supercharger, it performs as advertised, however you need either a second one or to splice some lines to route to a single. Seems to do a good job at catching all of the oil, and I have purchased my second on here. With free shipping this one currently (as I write this) is about 20 bucks cheaper here than on other performance parts websites. One side note though, be sure to completely tighten the spout on the bottom and use a thread locker, then follow suite with the top inlet and outlet spouts. This is a nice set up for not a lot of money, and like I said...if you go forced induction this is a very recommended and nice addition.


    Year: 2008 Submodel: V6 Cleveland, OH

    Helpful (0) (0)

  • 5/5

    April 27, 2012

    Excellent Quality Product

    Really good craftmanship on the canister. I painted the bracket just to protect it from future rust. Easy install.


    Year: 2006 Submodel: GT Mission, TX

    Helpful (0) (0)

  • 5/5

    January 27, 2012

    Great moroso product

    Within 100 miles you can already see oil caught in it. No leaks. Looks great under the hood easy install in your driveway. Just wish they gave us a moroso sticker with it like they do with their other products


    Year: 2008 Submodel: GT

    Helpful (0) (0)

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