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Teraflex HD Cover for Dana 30 Differential Kit w/ Bolts & Plugs (87-18 Jeep Wrangler YJ, TJ & JK)

Item J17794
Teraflex HD Cover for Dana 30 Differential Kit w/ Bolts & Plugs (87-18 Jeep Wrangler YJ, TJ & JK)
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M-F 8:30A-11P, Sat-Sun 8:30A-9P
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20 Reviews 2 Answers
Market Price $111.99 You Save 11% ($12.00)
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$99.99 (each)

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    Frequently Bought Together

    Features & Details

    • Protects Moving Parts of Differential from Obstacles on the Trail
    • Constructed of High-Strength Ductile Iron
    • Installs Easily
    • Fits 1987-2018 Jeep Wrangler Models

    Product Resources

    Customer Photos (11) Customer Reviews (20) Questions (2) & Answers (2)

    Construction. Constructed from high-strength, 3.8-inch thick ductile-iron, the TeraFlex HD Differential Cover is durable enough to last for a long time.

    Function. It is designed to provide extreme protection to the moving parts of differential under the jeep. It keeps away rocks, debris and other obstacles while driving in extreme trails.

    Installation. It includes bolts and plugs for easy installation.

    Fitment. This Dana 30 differential cover is designed to fit all 1987-2018 Jeep Wrangler YJ, TJ and JK models equipped with a Dana 30 axle.

    Fitment: 1987 1988 1989 1990 1991 1992 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Details

    MPN# 3990630

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    What's in the Box
    • (1) Differential Cover
    • Hardware
    Installation Info
    Tech Specs
    Will it fit my Wrangler?
    • JK Rubicon 2 Door - 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18
    • JK Rubicon 4 Door - 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18
    • JK Wrangler 2 Door - 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18
    • JK Wrangler 4 Door - 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18
    • TJ Rubicon 2 Door - 03, 04, 05, 06
    • TJ Rubicon Unlimited 2 Door - 05, 06
    • TJ Wrangler 2 Door - 97, 98, 99, 00, 01, 02, 03, 04, 05, 06
    • TJ Wrangler Unlimited 2 Door - 04, 05, 06
    • YJ Wrangler 2 Door - 87, 88, 89, 90, 91, 92, 93, 94, 95

      Customer Photos (11) Submit Your Photo

      View All 11 Photos

        Questions & Answers (2)

        2 Top Rated Questions

        What size bolts and threads are these ? The ones that shipped with covers are junk and snapped off in my Diff at 15 ft-lbs now my rig is down until I can reinstall.

        • The bolts are 5/16"x18 and are about 1 1/4"-1 3/8" in length.

        Helpful (0)

        Does this come with a gasket?

        • No this will just be the HD Differential Cover and the included hardware needed for installation.

        Helpful (0)
        Post Your Question

          Customer Reviews (20) Write a Review

          Overall Rating 4.8

          out of 5 stars

          • Fit 4.9 4.9
          • Bang For Your Buck 4.9 4.9



          • 5/5

            July 26, 2019

            heavy duty diff cover

            this is a quality extremely heavy duty diff cover.

            PeterF

            Year: 2018Submodel: Wrangler

            Helpful (0)

          • 5/5

            April 07, 2019

            Tera flex Dana 30 cover

            Held up great out on the trails, strong, durable and heavy duty for all the rocky terrain we like to cover!

            Photon1120

            Year: 2013Submodel: Wrangler

            Helpful (0)

          • 4/5

            February 25, 2019

            Diff cover

            Very easy install, bolted right on and looks great. Way better then the stock cover.

            Richard

            Year: 2015Submodel: Wrangler

            Helpful (1)

          • 5/5

            February 01, 2019

            Diff. Cover

            It looks good , and it Fit great!! Glad I purchased it.

            RichM

            Year: 2004Submodel: Wrangler

            Helpful (1)

          • 5/5

            January 28, 2019

            Teraflex HD cover for a Dana 30

            Extremely satisfied with this cover, easy to install and a plus on that drain plug. Dont have to worry about taking off the cover down for an oil change. Looks awesome underneath my 02 TJ.

            JoseF

            Year: 2002Submodel: Wrangler

            Helpful (2)

          • 4/5

            August 04, 2018

            Nice fit, looks great! But

            I’m happy with my whole purchase of the Teraflex front and rear covers other than the drain plug in the front cover. The cover is made to help protect the front differential from hits of objects unknown. Then why is a lower drain plug sticking out of the cover at least a 1/4” so it could possibly take that blunt hit and cause really bad damage? The rear plugs are nice an flush- why not the front? Called Teraflex and got a great answer ( not) “we’ve always made then that way”. Ever hear of changes to made something better?

            GaryN

            Year: 2005Submodel: Wrangler Unlimited

            Helpful (4)

          • 5/5

            July 13, 2018

            Impressed with Teraflex!

            I am impressed with the quality of the Teraflex Dana 30 differential cover. It's won't have any problems with rocks or ice. They even sent drain plugs and plugs. I will be checking out their other products.

            RichardF

            Year: 2010Submodel: Wrangler

            Helpful (5)

          • 5/5

            June 01, 2018

            Very sturdy and love the drain plug

            This item is very sturdy and has a drain plug, which I was looking for on my YJ.

            ToddJ

            Year: 1992Submodel: Wrangler

            Helpful (5)

          • 5/5

            April 06, 2018

            front diff cover

            great fit looks great and easy install total install time around ahour

            BrianM

            Year: 2009Submodel: Wrangler

            Helpful (6)

          • 5/5

            April 05, 2018

            Works

            Product is made well, fits well and looks good. Exactly what I expected from TeraFlex.

            RJ

            Year: 2013Submodel: Wrangler

            Helpful (7)

          • 5/5

            March 06, 2018

            great quality diff covers

            bought ours when it was time for diff fluid change. Great product

            Aurora

            Year: 2016Submodel: Wrangler

            Helpful (5)

          • 5/5

            September 06, 2017

            Great upgrade

            This is a far beefier piece then what you start with. It's solid and looks great when installed.

            MJ

            Year: 2016Submodel: Wrangler

            Helpful (5)

          • 5/5

            August 16, 2017

            Good looking

            The diff cover is a good thickness. Thicker than the OEM, that's for sure. If you like to keep your underside looking in uniform than , front and rear will help your look. I'm a jeep owner that will slightly wash the underside but, also spray paint as well. Keeps it looking clean after the dirty days?

            Nayla

            Year: 2010Submodel: Wrangler

            Helpful (6)

          • 4/5

            May 22, 2017

            Teraflex dif cover

            Works and looks great. Great way to protect your investment made in your gears. Very heavy durable product

            ChristopherD

            Year: 2013Submodel: Wrangler

            Helpful (6)

          • 5/5

            April 12, 2017

            nice cover

            This is a nice cover and a good price. Its heavy and fits good. Adds a nice look as well

            MarkM

            Year: 2012Submodel: Wrangler

            Helpful (6)

          • 5/5

            August 24, 2016

            Easy and looks great

            The only reason that it takes a little longer to install is because you have to do a fluid change at the same time, replace the gasket, and retorque the bolts. The installation is no different than a factory cover.

            PerfessorM

            Year: 2014Submodel: Wrangler

            Helpful (5)

          • 5/5

            June 14, 2015

            Good quality and value

            Typical Teraflex no frills high quality product. Solid and perfect finish. The D30 was powder coated inside and out. Recessed bolt design offers protection against flattened bolt heads and there is a drain plug in the front that is positioned to fully drain the housing where the OEM drain will not. Drain plug is not magnetic though so you will still want to wipe gunk from OEM magnetic plug. Only gripe is the 9mm hex fill plug means you have to make sure you throw one of those in the tool bag.

            casamtb

            Year: 2013Ohio, USA

            Helpful (6)

          • 5/5

            February 26, 2015

            Awesome look and perfect protection!

            Product fit right on with no problems. Very noticable underneath and awesome protection

            pepecj123

            Year: 2014Long Island, New York, USA

            Helpful (5)

          • 5/5

            April 10, 2014

            Good product, easy install

            Overall this is a simple no brainer install. The hardest part the cover is the dif fluid.

            Phxrugger

            Year: 2007Phoenix, AZ, USA

            Helpful (7)

          • 5/5

            May 30, 2013

            this product is great and look nice and heavy duty

            This product fit perfectly on my jeep jk unlimited x with out any modification . Very easy to install and also provide armor on my differential. It also provide a great look on the vehicle. I have the teraflex Dana 30 and 44 on my jeep and it looks amazing.

            vidal07

            Year: 2009Rio Rancho, NM, USA

            Helpful (6)

          Community Support

          Word On The Trail

          I have used Extreme Terrain for 5 items so far. Everything has went smoothly and all is advertised. I really like the available videos for many of the items, numerous photo's, great instructions and so forth. I would highly suggest giving them a try. Zero complaints.

          MarkChapman-38142
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          Jay M's
          Jay M's, 2010 Wrangler JK Sahara Unlimited Customer Service Specialist
          I’ve always been into cars of all kinds but I really fell in love with my dad’s Jeep. That Jeep was the first vehicle that I felt free in. There is absolutely nothing on the road that is like it except for another Jeep. I love the family associated with the jeep community and the aftermarket options...
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