Superlift 99-06 Chevy Silv 1500 4WD - Knuckle Kit - 6in Lift Kit Component Box - Front

Superlift 3376 Front Knuckle Component Box for 6-Inch Lift Kits on 1999-2006 Chevy Silverado 1500, GMC Sierra 1500, Tahoe, and Yukon 4WD

The Superlift 3376 is a front knuckle component box providing the core front steering knuckle and bracket hardware for Superlift 6-inch lift systems on 1999-2006 Chevrolet Silverado 1500 4WD, 2002-2006 GMC Sierra 1500 4WD, 2000-2006 Chevrolet Tahoe, and 2000-2006 GMC Yukon 4WD. Part number 3376 supplies CNC-machined replacement steering knuckles that maintain OE alignment specifications after lifting, one-piece laser-cut and CNC-formed cross members built for lifetime durability, longer front anti-sway bar links, and all required brackets and hardware. The 3376 is compatible with Auto Trac transfer case models and does not require a replacement front driveshaft. It allows use of the factory spare tire and wheel.

Features and Benefits

• Replacement steering knuckles maintain OE alignment specifications after 6-inch lift
• Stylish high-clearance one-piece cross members, laser cut and CNC formed for lifetime strength
• Longer front anti-sway bar links included to maintain proper sway bar function
• Minimal differential modification required
• Compatible with Auto Trac transfer case models
• Does not require a replacement front driveshaft
• Allows use of factory spare tire and wheel
• All fabricated steel components laser cut, CNC formed, and powder coated
• Direct bolt-on, no welding required
• Backed by Superlift Limited Lifetime Warranty

Fitment

Specifications

What Is Included

• Replacement front steering knuckles (pair)
• One-piece laser-cut CNC-formed front and rear cross members
• Longer front anti-sway bar links
• All brackets, hardware, and fasteners

Frequently Asked Questions

Is the 3376 a complete lift kit for my Silverado 1500?
No. The 3376 is a front knuckle component box that provides the front steering knuckle and bracket hardware for a Superlift 6-inch system. It is used in conjunction with rear component boxes and shocks to create a complete kit.

Does the 3376 fit both the Silverado 1500 and the GMC Sierra 1500?
Yes. The 3376 fits 1999-2006 Chevrolet Silverado 1500 4WD and 2002-2006 GMC Sierra 1500 4WD, along with 2000-2006 Chevrolet Tahoe and 2000-2006 GMC Yukon 4WD.

Will the 3376 require a replacement front driveshaft?
No. The 3376 is specifically designed so that the factory front driveshaft can be retained, including on Auto Trac transfer case models.

Can I keep my factory spare tire and wheel with the 3376?
Yes. The 3376 knuckle kit system allows use of the factory spare tire and wheel without modification.

Will installing the 3376 void my Chevrolet or GMC factory warranty?
Under the Magnuson-Moss Warranty Act, a dealer must demonstrate that the aftermarket component caused a specific failure to deny a warranty claim. Installing a lift kit component alone does not allow the dealer to void the entire powertrain warranty. Consult your dealer with warranty-specific questions.

How long does installation of the 3376-based system take?
Typical installation time for a complete 6-inch system using the 3376 is approximately 8 hours. Difficulty level is rated 4 out of 5 and professional installation is recommended.

Does the 3376 system allow a professional alignment after installation?
Yes. The replacement steering knuckles in the 3376 are designed to maintain OE alignment specifications after installation, allowing a standard alignment to be performed.

What is the maximum tire size recommended with the 3376-based 6-inch lift?
A 6-inch Superlift system using the 3376 front knuckle kit typically supports up to 35-inch tires, though exact compatibility depends on wheel offset, backspacing, and whether fender modifications are performed.

Installation Instructions

1. Safely lift the vehicle and support it on jack stands at the frame. Remove both front wheels.
2. Disconnect the front sway bar end links and remove the factory steering knuckles per the vehicle service manual.
3. Install the Superlift replacement steering knuckles onto the ball joints and hub assemblies, torquing to specification.
4. Install the laser-cut one-piece cross members per the Superlift instruction manual, using the included hardware.
5. Install the longer front anti-sway bar links to restore sway bar geometry at the new lift height.
6. Install all included brackets per the instructions, including differential relocation brackets if required by the complete kit.
7. Reinstall front wheels, lower the vehicle, and torque all suspension fasteners to specification at ride height.
8. Have a professional four-wheel alignment performed immediately after installation.

Prop 65 Warning: This product can expose you to chemicals including lead and other compounds known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.