TeraFlex Dana 44 AdvanTEK (M220) Rear HD Differential Cover Kit
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Warranty Information
Vendor warranty summary
TeraFlex Warranty
At a glance: Lifetime on suspension, steering and armor; 1 year on Falcon shocks and drivetrain; 90 days on finish
This is TeraFlex's warranty, not an NVMOS policy. We've summarized it in plain English to save you a search. The manufacturer's official terms always govern and can change without notice. Last reviewed on nvmos.com: October 4, 2026.
Coverage by product
| Product or component | Coverage |
|---|---|
| Suspension (coils, bump stops, control arms, track bars, sway bars/links, IR bushings) | Lifetime |
| 9550 shocks and stabilizer | Lifetime |
| Steering and brakes (ball joints, tie rods, drag links, big brake kits, rotors, brake lines) | Lifetime |
| Body armor (skids, racks, Alpha carrier, CB mounts) | Lifetime |
| Wheels and adapters | Lifetime |
| Delta Brake Kit | 3 years |
| Falcon shocks (all series) | 1 year |
| Axle assemblies, housings, knuckles, shafts, conversions | 1 year |
| Alpine control arm and track bar bushings; driveshaft parts; transfer case kits | 1 year |
| Recovery gear (straps, D-rings) | 1 year |
| Paint and powder coat | 90 days (defects only) |
| Wear items (brake pads, rotors) | Not covered |
- Original purchaser only — coverage does not transfer if you sell it.
- Keep your NVMOS order confirmation — proof of purchase is required.
What's covered
- Defects in materials and workmanship
- TeraFlex chooses to repair, replace or refund at no charge (except inbound shipping)
- TeraFlex pays the freight to send the part back to you
What's not covered
- Improper use, failure to follow instructions, or improper installation/maintenance
- Modifications or unauthorized repair
- Normal wear and tear, and finish beyond the 90-day term
- Racing or competition use
- Shipping/storage damage and other outside causes
- Removal labor (customer's responsibility)
How to make a TeraFlex warranty claim
- Call TeraFlex customer service, Mon-Fri 8am-5pm MST
- Have proof of purchase or the original invoice ready
- Remove the part and ship it in at your cost
TeraFlex contact: Phone: (801) 713-3314 · Claim page / support
Bought it from NVMOS? Start with us.
Have your order number and a few photos of the issue ready, then call real humans at (920) 249-7744 or send us a message. We'll tell you whether the claim goes through us or straight to TeraFlex, and help it along either way.
Shop TeraFlex at NVMOS
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See all TeraFlex products, lead times and FAQs →
Disclaimer: The information on this page describes TeraFlex's own warranty policy. It is not a warranty offered by NVMOS (No Visible Means of Support LLC). Manufacturers update their terms at any time; we review these pages periodically, but the manufacturer's current official policy is the one that applies to your claim. Source: TeraFlex official warranty information. Last updated on nvmos.com: October 4, 2026. See our return policy for NVMOS's own terms.
About the brand
TeraFlex has built Jeep suspension since 1996, works out of West Jordan, Utah, and now covers the Ford Bronco, Toyota Tacoma and Super Duty too. NVMOS carries TeraFlex lift kits, Falcon shocks, Alpine control arms, sway bars, ball joints, wheel adapters and Nomad and Olympus wheels. For Jeep and Bronco owners building for the trail.
Based in: West Jordan, Utah · Made in: USA (Utah) · Founded: 1996 (manufacturing) · Lead time: In-stock items ship in 24–48 hours
Shop all 1057 TeraFlexWarrantyAll brands
Warranty terms are set by TeraFlex, not NVMOS, and can change. Bought from us? Call (920) 249-7744 and we'll handle the claim with the brand.
TeraFlex Dana 44 AdvanTEK M220 Rear HD Differential Cover Kit
This TeraFlex HD differential cover kit is for the rear Dana 44 AdvanTEK (M220) axle. TeraFlex builds heavy-duty covers to withstand trail damage from rocks, debris and other obstacles. Browse more axle parts.
The M220 is the rear AdvanTEK 44, so this kit is matched to it rather than to the M210 front or the standard Dana 44. The vendor estimates about one hour of labor. Pair it with other drivetrain parts if you are upgrading the axle. Confirm your rear axle is an M220 before ordering, because no vehicle fitment is listed. If you are unsure which axle is under your vehicle, email support@nvmos.com and we will help you confirm it.
| Spec | Detail |
|---|---|
| Axle | Dana 44 AdvanTEK (M220), rear |
| Product | HD differential cover kit |
| Brand | TeraFlex |
| Estimated labor | 1 hour |
| SKU | 3990745 |
Dana 44 AdvanTEK (M220) rear axle.
Videos
Install guides & documents
Complete your build
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TeraFlex Dana 44 AdvanTEK (M220) Rear HD Differential Cover Kit FAQs
Is this a front or rear cover?
Rear. It is for the Dana 44 AdvanTEK M220.
Does it fit the M210 front axle?
No. The M210 front has its own cover kit.
How long does it take to install?
About 1 hour, estimated.
Which vehicles does it fit?
The listing names the axle, not vehicles. Confirm your rear axle is a Dana 44 AdvanTEK M220.
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