Home Blog Contact Us About Us Jeep Parts & Accessories Where we shop Search Login View Cart (0)
Home > AXLES & AXLE PARTS > Diff Covers & Pinion Guards

Dana 30 3/8" Differential Cover

Dana 30 3/8" Differential Cover

  • Ring is 1/2" and the Cover is 3/8" thick
  • Plate steel cover bent 8 ways
  • Machined absolutely flat for a perfect fit
  • All seams fully welded inside and out

This is our basic differential cover, we see it as the only one worth making. The D30 came in a few different trucks but it primarily came in Jeeps, from the Jeepster in the late 60's, through most of the CJ5, CJ6, & CJ7 years, throughout all of the different Wrangler variations (YJ & TJ), Cherokees (XJ), and of course the Early Broncos. The D30 axle is actually a pretty good little axle if you don't get carried away with too big tires.

One of the questions we get regularly is about the tie rod clearance, it is ~3/4" and it clears all of the D30 axle setups we have encountered.

This Differential cover is a 1 piece Plate steel cap 3/8" (.375") thick bent 8 ways then welded to a 1/2" ring, we had to make it thicker to make enough room for the thickness of the cover, it just happens to make it 30% stronger too! The fill plug is a generous 3/4" ID for easy fill and oil level check. This is arguably the strongest Diff Cover made for a Dana 30 axle.

We manufacture this and all of our covers out of A50 Plate Steel, that's 50,000 PSI Tensile strength. After welding, the mounting surface is machined absolutely flat for a perfect fit! This is for a fully welded D30 Differential Cover with fill plug ready to plug and play.
Customer Reviews
Average Customer Review: 5 out of 55 out of 55 out of 55 out of 55 out of 5 20 Reviews
Write a review

5 out of 55 out of 55 out of 55 out of 55 out of 5 Built for war!
By John E Munder in TX on 2.21.2018
Just received this cover and the Dana 44 cover for my 2007 JK. Like the title says...they are built for war! I was surprised just how heavy these sucka's are. I'm also a welder and have been welding for a long time and these beads are just beautiful. Whoever did them did a kickass job. You could literally throw one of these at someone and it would probably take them out. I can't imagine denting one of these at all. If push comes to shove I think the rock is going to move or split under one of these. Nice job fellas...I'm sold on your products.

5 out of 55 out of 55 out of 55 out of 55 out of 5 Heavy Metal!
By Christopher Jones in CO on 12.28.2017
Ordering was easy, shipping was fast (as usual), and the diff cover is thick and strong. No more worries about a busted diff on the trail. Fit onto my HP D30 no problem. Highly recommend this cover for any project or rig. Don't forget to buy the longer bolts!

5 out of 55 out of 55 out of 55 out of 55 out of 5 awesome quality
By anthony cabral in TX on 9.19.2017
All I can say is wow! High quality metal and fabrication. Definitely will continue to order all my axle parts through RuffStuff!

5 out of 55 out of 55 out of 55 out of 55 out of 5 Money Well Spent
By Chase Bowen in NC on 4.21.2017
Straight beef! Very impressed with this diff cover, quick easy installation fits perfectly, definitely worth it.

5 out of 55 out of 55 out of 55 out of 55 out of 5 Beef isn't come close to what this is!
By Jason in ID on 11.28.2016
To start with shipping was lighting fast, and probably one of the best packing jobs I've ever seen. Now for the Dana 30 cover "WOW" took two hand just to pick up this thing. I truly think I could shoot this thing and it wouldn't damage it. I'll be back!!!

5 out of 55 out of 55 out of 55 out of 55 out of 5 Nice!
By Brian Pulscher in OK on 10.31.2016
Nice piece of work! Fit and finish were flawless.

5 out of 55 out of 55 out of 55 out of 55 out of 5 GOT BEEF?
By Mike G in AZ on 9.10.2016
Dana 30 diff cover came faster than expected and was packaged very well. You know when Tim Allen from Tool Time grunts when there's something bitchen on the show? That's what I did when I pulled this bad boy out of the wrapping. Super beefy and great look and finish. I cleaned, primed, and painted the cover and went to installing it on my rig. Very good fit even after 3 coats of paint. Only area that I see for improvement would be that the area driled out around the holes were just a tiny big bigger so you can actually get a nice good bite on the bolts when fighting them down but still gets a 5 out of 5 in my book. Over all an outstanding and awesome product. You won't be sorry. Uuugh uugh uugh!!!

5 out of 55 out of 55 out of 55 out of 55 out of 5 Tough and fast!
By Chris Nieman in IA on 6.2.2016
This is the end all be all for protection on your Dana 30! Excellent craftsmenship and got to my door MUCH faster then I expected! If you are even considering this, just buy it already! You won't be disappointed!

5 out of 55 out of 55 out of 55 out of 55 out of 5 That Good
By william holmes in NV on 2.21.2016
Awesome quality simply the best on the market !!!!!

5 out of 55 out of 55 out of 55 out of 55 out of 5 Best cover for Dana 30
By Anthony Martinez in TN on 2.11.2016
Super strong cover , perfect for protecting my arb locker investment And really fast shipping.

4 out of 54 out of 54 out of 54 out of 54 out of 5 Awesome cover not so good bolt kit
By John Davis in WV on 2.6.2016
The cover super beefy and has first class construction. But... the optional bolt kit is not well thought out. It comes with the plug and 10 grade 8 bolts you could buy anywhere. The problem is you can't torque the bolts and can only tighten them with an open ended wrench due to how the cover is machened.

5 out of 55 out of 55 out of 55 out of 55 out of 5 Heavy Duty!
By Shannon Darnell in CA on 1.25.2016
Ordered this 30 and a 44 and basically got them the next day as I'm in Ca. I'm not one to tear my stuff up just because I can. And being a gear head I despise those people. But I can tell you these are the EPITOME of heavy duty. When the world ends there will be 3 things left, Cockroaches, Keith Richards, and these Diff covers.. Pull the trigger on these, you wont be disappointed..

5 out of 55 out of 55 out of 55 out of 55 out of 5 diff cover thats as strong as the rest of your axle housing
By Darren Casada in KY on 8.16.2015
All material is 3/8" thick, well designed, dome for ring gear is made from one peice of steel, nice welds. My wish list would be to have an option for allen head bolts that are flush mount cone shape.

5 out of 55 out of 55 out of 55 out of 55 out of 5 Best Diff cover on the market
By Chris Olson in WA on 7.8.2015
This cover is amazing super beefy welds are superb can't beat the price this cover looks almost indestructable great job Ruff Stuff love your products keep it up

5 out of 55 out of 55 out of 55 out of 55 out of 5 end-all-be-all
By Donald Blackwell in PA on 4.15.2015
There's no comparison with ruffstuff's diff covers. Actually sold my "bombshell" cover when i bought this. Absolutely solid and really a work of art, not to mention no 11-teen-year-old skull on them. Shipping is awesome every time with these guys. Absolutely would buy again, and have for the other toys.

5 out of 55 out of 55 out of 55 out of 55 out of 5 ! !!!BEEFY!!! !
By Josh Tougas in FL on 11.30.2014
Heavy duty steel NOT cast aluminum! Installed NO leaks! Best price around (I checked), TOP notch Quality & BEEEFFFYYYY!!!!!!

5 out of 55 out of 55 out of 55 out of 55 out of 5 super strong
By kurtis june in PA on 3.14.2014
I am going to get another for my other jeep.

5 out of 55 out of 55 out of 55 out of 55 out of 5 No better Diff Cover
By John Brune in MI on 7.21.2013
Hand's down the best out there! Price is a bonus.

5 out of 55 out of 55 out of 55 out of 55 out of 5 Tough
By Ron in MD on 5.25.2013
I just installed mine today and this thing is THICK. I doubt I'd dent this like I did my stocker. As the other poster mentioned, the bolts don't fit well due to the thickness of the plate. I ran to the hardware store while the RTV was setting up and picked up some 5/16"x1"-18 bolts and some washers so I'd have more thread in the case.

5 out of 55 out of 55 out of 55 out of 55 out of 5 RuffStuff Dana 30 3/8
By Tony Muckleroy in TX on 1.6.2012
I ordered my RuffStuff Dana 30 3/8" Differential Cover back in November and I was very impressed with it when I received it. Beautiful welds and so heavy! The box it came in was about gone. But even UPS/USPS (I forget the carrier) couldn't do any damage to this hung of sculpted metal! lol I just got around to installing it last night. Fitment on two of the bolts was a bit tight, so I would recommend a "dry" fitting before you put the RTV on it, you need to know what bolts to start with, and obviously don't tighten any of them until you have them all started. I haven't put it on the dyno, but I'm pretty sure I've gained at least 10 HP from this mod! ;o) Heavy duty, very well made product. I'll be getting one for my Chrysler 8.25 soon! I've done a post with lots of pictures of the installation on xjtalk.com.

View all 20 reviews

Questions and Answers

Ask a Question


Steeve on 3-21-2018 Asked: I have a 2013 jku sport with a Dana 30 front axle. Is this a straight on for?

Answered: Yes this will bolt to your dana 30. You do need longer bolts for the thicker cover which we offer as an option when adding this to your cart.
Dennis G. on 2-6-2018 Asked: Would this fit with heavy duty steering? 1996 jeep zj 2 inch lift

Answered: We typically have to add bends to our steering kits to clear diff covers and sway bar linkage. If you want to measure with your wheel turned to full lock you can see if you'll have clearance issues. Our D30 covers sit about 3" off the the mounting surface
Tom D. on 12-21-2017 Asked: Does this work with stock steering? 1998 Jeep XJ-no lift

Answered: Yes it will. The cover is 3/16" taller than the factory one. The tie rod gets pretty close when the steering is full lock, but should not hit if your alignment is correct.
5 out of 55 out of 55 out of 55 out of 55 out of 5 20 Reviews Read
Part Number: 
Shipping Weight: 
12.00 pounds

YES (9.00)

Related Item(s)

Customers who purchased this product, also purchased:
Chrysler 8.25 3/8" Differential Cover
Dana 44 3/8" Differential Cover D44
Ford 8.8" 3/8" Differential Cover
Ruffstuff Logo
Dana 35 3/8" Differential Cover