TeraFlex Front Axle Inner Knuckle Gusset Kit, Lower for 2007-2018 Jeep Wrangler JK
- Guaranteed FitmentTeam-confirmed fit or money back
- No Sales TaxZero sales tax on every order
- 30-Day Money-Back GuaranteeReturn it within 30 days of delivery for a refund
Questions or a custom quote?
Mon to Fri, 9am to 5pm EST
Complete your upgrade
Fits the same truck
Features
- Lower knuckle gussets: Reinforces the lower side of the inner knuckles on the factory front axle.
- Guards against bending: TeraFlex says the gussets help prevent bending or breaking in extreme use.
- Dana 30 or Dana 44: Fits JK factory Dana 30 and Dana 44 front axles.
- Pairs with upper gussets: Combine with the upper gussets (4990800) or the sleeve kit (4990900).
- Professional install advised: TeraFlex recommends installation by a certified mechanic.
- Not for Rubicon Recon: TeraFlex excludes the Recon Dana 44 with 0.375" wall tubes.
Description & Fitment
The TeraFlex Lower Inner Knuckle Gusset Kit reinforces the lower side of the inner knuckles on a JK Wrangler or Wrangler Unlimited Dana 30 or Dana 44 factory front axle, which TeraFlex calls a weak point, to help prevent bending or breaking in hard use. It does not fit a Rubicon Recon Dana 44 with 0.375" wall tubes. TeraFlex recommends a certified mechanic for the install.
Fitment & Compatibility
| Years | Model | Bed | Notes |
|---|---|---|---|
| 2007-2018 | Wrangler | JK |
Fits: 2007-2018 Jeep Wrangler JK and JK Unlimited, factory Dana 30 or Dana 44 front axle
About TeraFlex
TeraFlex describes itself as a Jeep company at heart, started and staffed by people who drive them. It designs, engineers and builds suspension systems, shocks, axles and performance parts, with the Wrangler and Gladiator at the center of the range.
The company traces its roots to the 1950s and MEPCO (Military Equipment Parts Company), an early supplier of Jeep parts. TeraFlex Manufacturing followed in 1996 to build heavy-duty suspension for the TJ Wrangler, and today's catalog runs from full lift systems and the Falcon shock line to axles, steering and armor.
Authorized TeraFlex dealer. Prestige Truck is an authorized TeraFlex dealer, so what we sell is new and genuine TeraFlex. In TeraFlex's words, its limited warranty extends "only to the consumer who originally purchased the product," so keep your receipt with your build records.
Frequently Asked Questions
Does it fit a Rubicon?
TeraFlex lists factory Dana 30 and Dana 44 front axles, but not the Rubicon Recon Dana 44 with 0.375" wall tubes.
Are the upper gussets included?
No. This kit is the lower gussets only; the upper kit is 4990800.
How do I pick the right part number?
Each listing names the position, side, axle and size TeraFlex lists for that part number. Match it to your Jeep and current setup, or send us your VIN and build details and we'll check before you order.
Who should install it?
TeraFlex recommends a certified mechanic. Follow the TeraFlex instructions for the part, and take any torque values from those instructions or your service manual.
What if it arrives damaged?
Check the packaging and the part before you sign, note any damage on the delivery receipt, and contact us right away. We will sort out a replacement with you.
Is this genuine TeraFlex?
Yes. We are an authorized TeraFlex dealer, so every part ships new and genuine.
Installation
Stuck on a step?
Specifications
| Brand | TeraFlex |
|---|---|
| Part Number | 4990910 |
| Category | Axle brackets & components |
| Not For | Rubicon Recon with Dana 44 front axle (0.375" wall) |
| UPC | 843885014973 |
Warranty, shipping & returns
-
Warranty
TeraFlex's warranty list names no term for axle brackets, gussets, trusses, steering ram brackets or axle plugs, so contact us before ordering and we will confirm the coverage.- TeraFlex extends its limited warranty only to the consumer who first bought the product, and only on the vehicle the part was first installed on. It does not pass to a later owner.
- Coverage starts on the purchase date and does not restart if a part is repaired or replaced.
- For a covered defect, TeraFlex will either repair or replace the product (or the faulty part) free of charge or refund the purchase price, at its discretion, and it pays the freight to send a repaired or replacement part back to you.
- Not covered: damage from transportation, storage, improper use, skipped instructions or preventive maintenance, modifications, unauthorized repair, normal wear and tear, product finish, improper installation or maintenance, racing or competition, or accidents, abuse and neglect. Improper installation, poor maintenance, racing or competition use, and neglect or abuse void the warranty.
- Paint and powder coat finishes carry 90 days of defect coverage only, not wear from use.
- Claims: contact us first. Keep your proof of purchase or original invoice; removing the part from the vehicle and the inbound shipping are the owner's responsibility.
-
Free shipping
Ships free to the lower 48 states, with no minimum order.- Order by 5 PM ET on a business day and it starts processing the same day.
- Most orders arrive within 1-5 business days.
- We email your tracking number as soon as it ships.
-
Inspect on delivery
When it arrives, check the packaging and the part for shipping damage, then match what is in the box to the listing. Contact us right away about anything missing or damaged. Check it as soon as it arrives.- Look for crushed ends, punctures or tears in the carton.
- If something looks wrong, take photos of the box and the parts (and if a driver asks you to sign, note the damage on the receipt).
- Open the box and check the parts against the parts list before you install.
- Email support@prestigetruck.com right away with your order number, a short note and photos. We send a replacement or a full refund at no cost to you.
-
30-day returns
Return it within 30 days of delivery, unused, in the original packaging, with proof of purchase.- Email support@prestigetruck.com with your order number. We reply within 1-2 business days with instructions.
- Damaged, defective or wrong item: we send a prepaid label or arrange a pickup.
- Changed your mind: you pay return shipping. No restocking fee.
- Refunds go back to your original payment method within 7 business days of approval. See our returns policy.