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Ford Performance Rocker Arm and Lash Adjuster Kit (05-10 GT)

Item 50490
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    Features, Video & Details

    • Genuine Ford Racing Part
    • For Use on 4.6L 3V SOHC Engines
    • Fits 2005-2010 GT and Bullitt Mustangs
    • Sold as a Set of 24 Rocker Arms and 24 Lash Adjusters

    Review & Installation Video

    Review & Install Video

    The Ford Performance rocker arm and lash adjuster kit will appeal to 3V owners out there for two big reasons. First and foremost, this OE replacement kit will be a great solution to a set of old or worn out stalkers, which are more than likely producing that dreaded tick noise coming from your top end. Secondly, if you are replacing or upgrading your camshafts, this would be the time to install the Ford Performance kit in order to freshen everything up, since the cams do need to come out to install or replace this kit. Pricing is going to land you just south of $300, and it is going to get a full three out of three wrenches on the difficulty meter, as there is some pretty in-depth work required. Now, this kit from Ford Performance was actually the OE equipment on all 2005 to 2010 Mustang GTs. So in a sense, yes, it is a Ford Performance part. But at the same time, don't expect to be getting some beefed up part here, because that simply just will not be the case. The only upgrade here with this kit is that everything is completely brand new, including your 24 rocker arms, in addition to the 24 lash adjusters. So why in the hell do you want to replace these things? Well, like anything, the factory stuff tends to wear out over time, and that's when you start hearing that dreaded tick or some other funky noise coming from the top end. Now, sometimes that noise can actually be coming from your VCT solenoid. But more often than not, you can trace the issue back to the heads, and more specifically to a bad rocker or lash adjuster. So if you have a higher mileage car and you have encountered this noise, this kit along with a new set of phaser bolts would be highly recommended. That's because those bolts are only a one-time use item, and after all they're only about $20 on the site. So just do yourself a favor and grab those, which does lead me to my next point. In order to install this kit, the cams do need to be removed in order to access everything. So that being said, this would be the perfect time to consider going with an aftermarket cam to really wake up that 3V, in addition to getting that nice choppy idol a lot of us gearheads really dig. In fact, Ford Performance does offer their hot rod cams. Comp offers their Mutha' Thumprs. So you have a few different sets on the site to consider. Just keep in mind though, however, guys, some of these do require the use of aftermarket valve springs. Speaking of springs, you'll also need to compress the valve springs in order to get the followers out. So just make sure you're prepped for that. If you don't have one, some local parts stores will even rent out a valve spring compressor tool. Or on the other hand, if you want, just go completely balls to the wall. Throw on a gnarly cam, add some valve springs, and then tie it all together with the Ford Performance kit that we have here, and essentially you have a completely refreshed top-end build. But ultimately, budgets will determine just how much work you want to do to your ride, and that is going to be your call. Speaking of work, this kit will involve a lot of it. So I'm going to go three out of three wrenches here, guys, on the difficulty meter. Maybe a half a day to a full day in the shop or garage, depending on your expertise. You are going to need the whole toolbox for this one, including the timing wedge tool to keep that timing chain in check while you are disassembling everything. But ultimately, guys, if you're not up to diving into the motor, removing the camshafts, and everything else that comes along with the rocker arm and lash install, you might want to leave this one up to your local shop. So if you guys are suffering from that dreaded tick with your 3V, or if you're just looking to freshen up the valve train for a cam install, you're going to want to grab the Ford Performance rocker arm and lash adjuster kit right here at

    Ford Racing Rocker Arms. When replacing your GT Mustangs old worn stock rocker arms upgrade to a set of Ford Racing Rocker Arms and Lash Adjusters for peace of mind. Lighter than stock, these rocker arms are stiffer and provide better engagement on lash adjusters over the factory 4.6L SOHC rocker arms.

    Legendary Ford Racing Quality. When you're adding performance parts to your Pony, you can't go wrong by installing parts from the folks that know it best. Ford Racing's legendary quality ensures a perfect fit and years of hassle-free use.

    Application. This Ford Racing Rocker Arm and Lash Adjuster Kit is designed for use on 2005-2010 Mustangs equppied with a 3-valve 4.6L SOHC engine, including GT and Bullitt models. Sold as a set of 24 Rocker Arms and 24 Lash Adjusters.

    Fitment: 2005 2006 2007 2008 2009 2010 Details

    MPN# M-6529-3V

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (24) Rocker Arms
    • (24) Lash Adjusters
    Installation Info
    Tech Specs
    Will it fit my Mustang?

      Customer Photos (14) Submit Your Photo

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        Questions & Answers (13)

        5 Top Rated Questions

        can you replace rocker arms and lash adjusters without removing the cam?

        • You must remove the cam.

        Helpful (4)

        Maybe I am old school, but what about the lifters or are the lash adjusters the same thing or am I missing something?

        • Lash adjusters are the same thing as lifters in an over-head cam motor. You would use lifters in the place of lash adjusters in a pushrod motor.

        Helpful (1)

        Hi, I would replace rocker armrs and Lash Adjuster, but There would be someone kindly, which explain the procedure ? I thank AmericanMuscle for its special product and for the availability of everyone

        • We would highly recommend having a shop install these if you are not too sure as these are a very technical part and can cause major damage to your motor if not done correctly.

        Helpful (1)

        Does this kit change the followers on the cams the rollers. It looks as if it does but not 100 percent sure

        • Yes, The Ford Performance Rocker Arm and Lash Adjuster Kit Will change out your rocker arms which are also often called the followers.

        Helpful (1)

        Is there a warranty on this item. I got the kit a month or three ago and I believe one of the lash adjusters or rocker arms failed again.

        • Ford Performance products like this are sold without a warranty offered by the manufacturer.

        Helpful (0)
        Post Your Question
        8 More Questions
        Is it highly recommended to change these when putting in hot rod cams? I just don't want my engine to be screwed like others have been. 1 answer
        will these fit 2005 f150 5.4l 3v 1 answer
        Will this kit also fit the 5.4L 3V? 1 answer
        Do you need to remove the springs replacing these? 1 answer
        The oil holes on these new rocker arms are a lot smaller than that of the oil holes on the rocker arms that are being replaced. Will this effect oil flow? Will it be easier for these oil holes to potentially be clogged with debris? 1 answer
        Will these not fit the 2v 4.6 because of quantity? 1 answer
        Will these fit a 99-04 2v GT? 1 answer
        I have a 2006 f250 5.4l 3v will these fit? 1 answer

          Customer Reviews (50) Write a Review

          Ratings Summary

          4.7 out of 5 overall rating from 50 customers

          Installation Time: Full Day

          Installation Cost: $100-$250

          • November 29, 2019

            5 2010 GT - Travis318 Installation Time: Less than 1 Hour

            Good stuff

            Item was as described. Easy install, took 40 mins with taking my time to retorque the caps. If you don’t have knowledge on how to rechain/retime your chain or how to properly torque your caps into the cans, get a professional to do this install for you. Otherwise, great product.

            Helpful (0)
          • May 15, 2019

            5 2006 GT - BenM Installation Time: Full Day


            While doing cams I went on ahead and changed these out too. Great product. Fast shipping.

            Helpful (0)
          • January 17, 2019

            1 2006 GT - DougT

            Rocker arm and lash adjuster

            I don’t like that one minute the item was $279 in one week they went up over $400

            Helpful (11)
          • August 02, 2018

            5 2007 GT - JasonH Installation Time: Full Day

            Ford Performance Rocker Arm and Lash Adjuster Kit

            Well I don't know if I really needed or not figured I would go ahead and put new in since I had everything opened up putting in new cam's so far so good

            Helpful (6)
          • July 03, 2018

            5 2010 GT - MarkH Installation Time: Afternoon


            Very happy with my purchase. Install was a breeze parts fit perfect!!!!!

            Helpful (7)
          • June 21, 2018

            5 2006 GT - Brandon Installation Time: Shop Install

            Fantastic product

            Had problems with my stock rocker arms ticking. Bought this kit from American Muscle for 1/8th the cost my local auto repair shop sells rocker arm kits for. Had them installed and it turned my loud ticking engine into a fantastic smooth sounding engine. Would recommend this product to anyone having ticking problems with their mustang gt

            Helpful (7)
          • June 10, 2018

            5 2008 Bullitt - MasonB Installation Time: Less than 1 Hour

            Must have when changing out cams

            Great product and wouldn't change out cams without these. Easy to install.

            Helpful (6)
          • June 07, 2018

            5 2010 GT - Carter Installation Time: Shop Install

            Hope u dont have to buy there.

            Hope you don’t have to buy these. And your Whip is running just fine!!!. . But if you do cuz your pony is sick... These are great. No joke, they work perfectly.

            Helpful (7)
          • June 01, 2018

            5 2008 GT - 5LCoyoteChaser Installation Time: Afternoon

            For Smoother Operation

            I wouldn't say there was any performance gain, but you can tell the car runs smoother with these because of the lighter weight. Got rid of my ticking issue which is a plus.

            Helpful (8)
          • April 18, 2018

            5 2006 GT - RickC

            Newer rocker arm design

            I received the kit and it appeared that there were no holes in the lash adjuster side of the arm. I talked to the Ford Performance team and they had me look closer. There are indeed holes, but they are very small. I am assuming this will help increase oil pressure to the timing chain tensioners. Thanks to American muscle for the review video showing the new design. The new rocker arms are: 3L3Z-6564-A Replacing 3L3Z-6564-BA.

            Helpful (11)
          • February 23, 2018

            5 2009 GT - DavidS Installation Time: Afternoon

            Rocker arms and lash adjusters

            Easy to install about 6 hrs, studied every thing i could find on web, u tube,repair books, got the right tools made every thing go smooth

            Helpful (10)
          • January 17, 2018

            5 2006 GT - JakeW Installation Time: Weekend

            Lash Adjuster and Rocker

            Exactly what I expected. Was a little learning curve when replacing but solved the dreaded ticking. Had a failed lash adjuster and 2 rollers.

            Helpful (11)
          • January 14, 2018

            5 2008 GT - TerryJ Installation Time: Full Day

            Best oem upgrade

            Updated with fords raceing hot rod cams custom blue valve covers it made sense to replace ford performance Rocker Arm and lash Adjuster kit (05-10)GT

            Helpful (8)
          • December 26, 2017

            1 2006 GT - HeatherA

            Ford performance rocker arm and lash adjuster kit

            I ordered this as a Christmas gift, however when it was opened on Christmas day it was defective. After comparing to many other pictures on the site etc we noticed that the set does not have oil ports in the rocker arms at all. Instead they were never drilled out. I'm very disappointed with this purchase

            Helpful (8)
          • November 23, 2017

            5 1987 LX - Poz2113 Installation Time: Afternoon

            Great Parts and Experience

            American Muscle had these valvetrain parts for the lowest price around. Not only that, but I had a few questions about their fitment in my application and the Customer Service people helped me out. Try buying these from the dealership, and be prepared to pass out when you hear the price. Good product, good price.

            Helpful (7)
          • November 13, 2017

            1 2006 GT - fantompony01

            fantompony again

            This is the only product I have received from AM that I have unsatisfied with. during installation, one of the followers broke. I used my stock follewers, since they were all still good. The lifters in the kit are fine.

            Helpful (8)
          • October 13, 2017

            5 2005 GT - Carlos

            No more knocking

            Man my baby had this horrible sound coming from the engine found out what it was came to AM bought these rockers, now she's all good so if you hear a knocking/ticking sound don't do a complete tune up on your baby like I did, unless she needs it. more then likely its the rockers.

            Helpful (8)
          • October 03, 2017

            5 2006 GT - Redfire06 Installation Time: Afternoon

            quality parts

            Gets the job done and is an easy install good idea to install along side new camshafts

            Helpful (8)
          • September 27, 2017

            5 2009 GT - TJ Installation Time: Less than 1 Hour

            Ford Performance Rocker Arm Kit

            Great product, great quality. Easy installation with a better lifter design than before. Would highly recommend!

            Helpful (8)
          • September 09, 2017

            5 2009 GT - AndyG Installation Time: Shop Install Installation Cost: 0-$100

            What a difference

            My GT started giving me a nasty ticking sound and after doing some research and reading some reviews at AM I knew it was time to upgrade to this ford performance rocker arm and lash adjuster kit. Since I was going to purchase them and knew they had to open up the heads I figure why not change the cams also. So I went I change my cams with the ford performance rocker arm and last adjuster kit. As soon as I started the engine WOW what a difference. The engine was quieter and that ugly noise was gone. So for those of you who are planning to upgrade your cams it's worth spending that extra money and also buying your ford performance rocker arm and last adjuster kit. Thanks AM for all your help!

            Helpful (9)

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