TeraFlex Dana 30 AdvanTEK (M186) Front 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 30 AdvanTEK M186 Front HD Differential Cover Kit
This TeraFlex HD differential cover kit is made for the front Dana 30 AdvanTEK (M186) axle. TeraFlex builds its heavy-duty covers to withstand trail damage from rocks, debris and other obstacles. Browse more axle parts.
The AdvanTEK M186 is a different axle from the standard Dana 30, so it takes its own cover. Plan on about an hour of labor, per the vendor estimate. A tougher cover gives the housing more protection on rocky trails. See other drivetrain parts for the rest of your axle upgrades. Double-check that your axle is the M186 before ordering. If you are unsure which Dana 30 you have, email support@nvmos.com and we will help you sort it out.
| Spec | Detail |
|---|---|
| Axle | Dana 30 AdvanTEK (M186), front |
| Product | HD differential cover kit |
| Brand | TeraFlex |
| Estimated labor | 1 hour |
| SKU | 3990731 |
Dana 30 AdvanTEK (M186) front axle.
Videos
Install guides & documents
Complete your build
The pieces owners run with this one — matched to your build and to each other. Do the whole truck in one order instead of three.
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TeraFlex Dana 30 AdvanTEK (M186) Front HD Differential Cover Kit FAQs
Is this the same as the standard Dana 30 cover?
No. The AdvanTEK M186 front axle has its own cover kit, separate from the Dana 30 and Tera30.
How long does installation take?
About 1 hour, estimated.
Is it for the front or rear?
Front.
What does it protect against?
Trail damage from rocks, debris and other obstacles.
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