TeraFlex Dana 44 Cast Iron Cover - 3990650 | 4WD.com

Up To $500 Off Tires and Wheels | Shop Now

FREE SHIPPING on Orders over $50*

TeraFlex Dana 44 Cast Iron Cover - 3990650

universal fit logo


  • TeraFlex | Part Number: TER3990650
  • Popular Axle Manufacture:Jeep|Dana
  • Type Of Material:Iron
  • Axle Location:Front|Rear
  • Axle Type:Dana 44|Dana 44 JK
  • Fitment:Universal Fit
  • Finish Type:Powder Coated
  • Oil Capacity:Standard Capacity


The TeraFlex HD44 differential covers are designed to offer extreme protection from rocks, obstacles and other debris on the trail. The TeraFlex differential covers are more than 3/8in. thick.



Question & Answers

5 Answered questions

Does the fill hole also used as a full level indicator?

Asked by Randall from on

Randall, the TeraFlex Dana 44 Cast Iron Cover fill hole is indeed used as level indicator. Hope this helps!

Answered by Zach O. ext 4939 from on

I see the two fill holes for high or low pinion gears but I don't see a drain plug at the bottom. The low pinon gear hole won't serve as an effective drain hole. Are we just supposed to let it dribble out of the bottom after loosening those bolts? Thanks, - CJ

Asked by CJ, "relatively experienced" Jeeper from Washington D.C. on

CJ, "relatively experienced" Jeeper, the TeraFlex Dana 44 Cast Iron Cover doesn't have a drain hole. So you will have to take the cover off to drain the axle just like a stock cover would. Hope this helps!

Answered by Zach O. ext 4939 from Washington D.C. on

with Teraflex Dana 44 does this product come with a gasket or do I have to buy it separately?

Asked by mark from rice lake, WI. on

Hello mark, The TeraFlex Dana 44 Cast Iron Cover does not include the gasket. i would recommend using a lube locker gasket. Thanks for the inquiry.

Answered by Adam from rice lake, WI. on

See all questions & answers


What is TeraFlex? A suspension company? Sure, but not just any suspension company. TeraFlex is a Jeep Wrangler suspension company. TeraFlex engineers enjoy coming up with products for one of the most engineered vehicles on the market. Interchangeable, dependable and durable - that is where TeraFlex comes in. TeraFlex picks up where Jeep left off to make Wranglers even better. Teraflex prides itself on striving for perfection in every aspect of product manufacturing and design. TeraFlex delivers the quality that hardcore off-road enthusiasts demand. Shop TeraFlex Now


Lowest Price! Guaranteed!