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JLT Oil Separator (05-10 GT)

AmericanMuscle no longer carries the JLT Oil Separator (05-10 GT). Please check out 2005-2009 Mustang Air, Oil and Fuel Filters for an updated selection.
49 Reviews
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  • Item #62027

  • Market Price $139.99
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AmericanMuscle no longer carries the JLT Oil Separator (05-10 GT). Please check out 2005-2009 Mustang Air, Oil and Fuel Filters for an updated selection.

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Product Videos Customer Photos
  • Reduces Engine Sludge
  • Billet Aluminum
  • Satin Anodized Finish
  • Easy Plug-And-Play Installation
  • Drivers Side (PCV Side) Kit
  • Includes New PCV Line with Fittings
  • Fits 05-10 Mustang GT
Reduce Sludge. In your Mustang's engine, crankcase exhaust is re-circulated back through your PCV system and intake, taking with it large amounts of oil vapors. This JLT Oil Separator kit installs in your PCV line to filter out oil before it can get into your engine's intake - where it doesn't belong - and cause damage.

Premium Quality Kit. This high quality kit includes the JLT Oil Separator, which features billet aluminum construction with a satin anodized finish for superior style and durability. The 2 oz. tank base is easily removed for draining during oil changes, and is designed with a o-ring for a leak-free seal. Plus, JLT added a Ford Motorcraft metal mesh PCV pre-filter to prevent any oil from getting back into your intake.

Easy Installation. This complete kit includes a factory PCV line that has already been modified with the necessary fittings and attached to the separator for a true plug-and-play installation.

Application. This JLT Oil Separator kit is designed for 2005 to 2010 Mustang GTs. Designed for direct installation on the driver's side only (same side as the PCV valve).

Technical Note. There is a unique JLT separator kit recommended for 2007-2010 Mustang GT500s - click here.

Fitment: 2005 2006 2007 2008 2009 2010 Details

What's in the Box
  • (1) Oil separator
  • (2) Hoses
Installation Info
Will it fit my Mustang?
  • GT - 05, 06, 07, 08, 09, 10

Most Helpful Reviews

Cleanest install out there

This is a great piece. Comes all assembled and installs in minutes. Only thing is if you have "Fuel Rail Covers" you will have to modify the driver's side one for this piece.

Helpful (7)

JLT Oil Separator

As a unit it looks great. As for functionality.....well, when I looked in, there was oil!! So, it works great! It was easy to install....plug and play as they say.

Helpful (4)

Overall Rating 4.7 out of 5 stars
Read All 49 Reviews

Review & Install Video

Hey I’m Justin with, here with a way to keep your 4.6L motor clean and sludge free, I’m referring to these JLT oil separators available in your choice of either black or satin fitting all 2005-2010 Mustang GTs. So what does an oil separator do? Well, just about every internal combustion engine has what is called PCV or positive crank case ventilation, this allows the small amount of blow by and gases that are produced during combustion to escape the crank case or block in a controlled manner. In just about every case, these oily vapors and fluids are rerouted through a PCV valve or breather tube, back into the intake to be burned up by your motor, the only problem with this is those oily vapors can oftentimes coat and dirty up the intake manifold, and in some extreme cases either cause damage, or lower the octane rating of your fuel by diluting your gas. This becomes even more of an issue on the supercharged or turbocharged cars where the crank case pressures can be increased, causing more of this oily by product or blow by to occur. That’s where these separators from JLT come into play. This kit mounts in line with your Mustang’s PCV system to catch any of that blow by or sludge we just talked about. We did install one of these on our 06 GT here a little while ago, and since then we’ve done some pretty hard driving, a few Dyno pulls and maybe an odd burnout or two. With that said, let’s take the kit off and see what we’ve collected. And there you go, this oily mess would have otherwise ended up going back into our intake manifold to be burned off by our engine. Taking a closer look at this kit from JLT you’ll actually notice it’s pretty simple. JLT utilizes a 2 ounce Billet aluminum collector, that is available in your choice of either black or satin, the kit does install 2 factory preinstalled hoses along with the fittings making this an extremely easy plug and play install here that should take you no more than a few minutes. You’ll simply want to remove the factory hose first, and then reinstall the JLT in reverse order. In the end, if you want to help keep your 3 valve 4.6L motor free of sludge, then going with this JLT oil separator would be a great place to start.

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4 Questions / 6 Answers

Ask a Question

will this fit a Whipple supercharger equipped 4.6 Shelby SGT


  • I think you have to mod them to fit specific blower configurations. Its easy, just go to your local auto parts and pick up extra emission hose!!


    Good Answer (1) (0)

Show 2 more answers Question Resolved

will it fit with a cdc shaker scoop


Answer This Question I need this answered (0) (0)

Will this fit with a Vortech supercharger?


  • You will probably have to replace the tubes that come with it with rubber hoses. I had to do this with mine. remove the clamps at the can, then heat the tube with a hairdryer, and then you can remove the quick connect ends and from the cans. works great.


    Good Answer (0) (0)

Answer This Question I need this answered (0) (0)

I have fuel rail covers installed . are hoses long enough to keep seperator away from covers? can longer hoses be ordered to move separator away from rail cover


  • The Oil Separator will not be able to reach with the fuel rail covers installed. Longer hoses are not available however longer hoses can be clamped onto the fittings if need be.


    Good Answer (0) (0)

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Customer Reviews (49) Write a Review

Overall Rating 4.7

out of 5 stars

  • 5/5

    February 21, 2011

    Cleanest install out there

    This is a great piece. Comes all assembled and installs in minutes. Only thing is if you have "Fuel Rail Covers" you will have to modify the driver's side one for this piece.


    Helpful (7) (0)

  • 5/5

    December 22, 2012

    pays to wait

    i had a upr catch can on drivers side. had to cut and shape hoses to fit---- moved this to passenger side JLT catch can very easy to install--- looks like it came from the factory installed.. anyone that knows how to open the hood can install this catch can


    Year: 2006 Submodel: GT N.J.

    Helpful (5) (1)

  • 5/5

    May 28, 2011

    JLT Oil Separator

    As a unit it looks great. As for functionality.....well, when I looked in, there was oil!! So, it works great! It was easy to install....plug and play as they say.


    Year: 2007 Submodel: GT

    Helpful (4) (0)

  • 5/5

    April 03, 2012

    Great addition

    Ordered this after finding small puddles of oil sitting in my TB and spacer. After just a week of driving with this on, I was surprised in how much oil there was already. Not to mention the install couldnt be easier and it looks good under the hood!


    Year: 2007 Submodel: GT Cincinnati

    Helpful (2) (0)

  • 5/5

    January 18, 2012

    A must have!

    10 second install, and you're off to a cleaner, healthier engine! The stuff its catching looks like chocolate milk. You don't want this garbage in your engine.


    Year: 2005 Submodel: GT New Jersey

    Helpful (2) (0)

  • 5/5

    December 10, 2011

    keeping your manifold clean.

    Looks great and picks up the residue oil from the valve cover. Keeping it out of the manifold...


    Year: 2005 Submodel: GT chelmsford, MASS

    Helpful (2) (0)

  • 4/5

    October 07, 2013

    It works!

    This is good product. I don't catch much oil due to the fact that i don't always drive my car hard. I was a little uneasy about how it fits. It sits right up against the connector to the coil. Installation was super easy and is very easy to clean. My only complaint is that I do see some oil in the hose that connects to the intake. So I assume some oil does get by the filtration.


    Year: 2009 Submodel: GT El Paso, TX, USA

    Helpful (1) (0)

  • 5/5

    March 20, 2013

    It's not rocket surgery...

    Good god, perhaps one of thee most easiest mods to perform on your engine; you could almost install with your eyes closed. JLT obviously went through great lengths to engineer this item to fit perfectly. Once installed, the unit looks very much at home. I am glad I went with the silver/satin finish instead of the black. I have no regrets because the mechanical concept surrounding this unit is sound and makes sense. Having said that, I have one concern: After reading some comments in a couple Mustang forums, I hope my installing this unit does not void any warranties.


    Year: 2008 Submodel: GT Fiddletown, CA, USA

    Helpful (1) (0)

  • 4/5

    December 29, 2012

    great product, only one problem

    The only reason I didn't give this product 5 stars is because it doesnt seem to seal up all the way. It catches the oil and thats great but I have a problem with oil leaking from it and basically coating the outside of the tube and it's starting to leak onto one of the hoses so it looks bad everytime I open the hood. So I have to wipe it down everytime I open it so people don't see just a bunch of black gunk on the part. I did check to make sure it was closed and it was and I never cross threaded it or damaged it in anyway, it's been a problem from the start. But other than that it does its job. I might try to upload a picture later so everyone can see the problem. Hope y'all have better luck than I did!


    Year: 2008 Submodel: GT Houston, TX

    Helpful (1) (0)

    • Response from AmericanMuscle

      Lisa , Customer Care

  • 5/5

    January 18, 2012

    Superior quality.

    This is the best on the market. Installs in 30 seconds and looks like it came from the factory.


    Year: 2005 Submodel: GT NJ

    Helpful (1) (1)

  • 5/5

    September 03, 2011

    Highly recommended..ESP with a blower !

    I had the the JLT Oil separator installed at the same time as my Roush M-90 blower. The oil separator is highly recommended at the best of times..and ESP if a blower is installed. On my 2010 GT [auto], the JLT oil separator gets installed on the DRIVERS side. You DON'T want gunk being spewed all over the throttle body, supercharger rotor pack, inter-cooler, and new intake manifold ! Most rotor packs these days now have Teflon coated rotor lobes. Protect your expensive investment. My local Roush dealer installed the M-90 blower and also the JLT Oil separator. The Roush dealer liked the idea, when I told him to install it, along with the blower install. He said it was a good investment, good idea on my part, and cheap vs the cost of the new blower/new manifold, etc. Just check and empty it each oil change.


    Year: 2010 Submodel: GT Victoria, BC, Canada

    Helpful (1) (1)

  • 5/5

    June 17, 2011

    JLT Oil Separator

    The JLT Oil Separator was extremely easy to install. It literally took seconds to do and it was done. This is truly one product that goes on in a snap. Keeping oil out of my intake is a must if I want to keep optimum performance for years. I would strongly recommend it for anyone.

    Ernest Hopper

    Year: 2009 Submodel: GT

    Helpful (1) (1)

  • 5/5

    June 03, 2011

    JLT easy install

    This was the one of the easiest installations I've ever had with just about any product. Less than 2 minutes to remove the old hose and install the JLT oil separator. Great product.


    Year: 2005 Submodel: GT

    Helpful (2) (2)

  • 5/5

    May 27, 2011

    JLT oil separator-what a breeze!

    This product was very, very easy to install - took me less than one minute! It looks great and I'm looking forward to the next oil change to see what it captures and keeps out of my 'Stang's heart. Great work, JLT. I definitely recommend this product.

    Eric Anspach

    Year: 2005 Submodel: GT

    Helpful (1) (1)

  • 5/5

    May 26, 2011

    HLT Oil Separator: Awesome

    Fit perfectly and looks OEM. I installed this in about 5 minutes with no problems.


    Year: 2006 Submodel: GT

    Helpful (1) (1)

  • 5/5

    May 04, 2011

    Fast and simple install

    This is a valuable addition to the new 5.0. GET IT, save your engine and the enviroment. A very easy install. I put it on me Roush Stage 2.


    Year: 2011 Submodel: Other

    Helpful (2) (2)

  • 5/5

    February 27, 2011

    Love This Catch Can

    I love plug and play. No drilling no cutting. Install took about 30 seconds.


    Year: 2005 Submodel: GT

    Helpful (2) (2)

  • 3/5

    December 13, 2012


    This is a great looking unit, but, unfortunately, if you installed Scott Drake fuel rails, it will not install as they say it will. With a little thought and know how. it will work just fine. I gave it a three rating just for that reason. Once you install it, works just as they said it would. If you have the stock fuel rails. 30 second install time is right on the money. Yes, I recomend this as it looks and works great.


    Year: 2005 Submodel: GT Springfield, OH, USA

    Helpful (0) (2)

  • 4/5

    August 29, 2016

    JLT Oil Separator

    Installed the JLT oil separator in about 15 minutes. It captures about 3/4 of the reservoir in 3k miles.


    Year: 2008 Submodel: Bullitt

    Helpful (0) (0)

  • 5/5

    July 10, 2016

    JLT oil separator

    Product is really good and works really well also looks really good under the hood of my car


    Year: 2006 Submodel: GT

    Helpful (0) (0)

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