When upgrading your 4WD for off-road capability, the suspension lift kit is one of the most impactful modifications. Part number 84629787 commonly refers to a 2-inch suspension lift kit designed for many light trucks and SUVs. This guide provides a detailed look at this specific part, its features, compatibility, installation, and what to consider before purchasing.
What Is Part No 84629787?
Part no 84629787 is a 2-inch suspension lift kit for 4WD vehicles. It typically includes front and rear coil spring spacers, sometimes with extended sway bar links and hardware. The kit is designed to raise the vehicle’s suspension height by two inches, improving ground clearance and allowing for larger tires. It is often used on popular models like the Chevy Silverado, GMC Sierra, and similar truck platforms, but always confirm fitment for your specific vehicle.
Specifications and Features
The kit usually consists of:
- Front coil spring spacers – Machined from durable materials like billet aluminum or heavy-duty polyurethane.
- Rear spacers – Often block-style or strut spacers depending on the rear suspension type.
- Extended sway bar links – To maintain proper sway bar geometry after the lift.
- Hardware – Grade 8 bolts and nuts for secure installation. The 2-inch lift is considered a “leveling” or “mild” lift, which does not require major driveline modifications like a drop transfer case or longer brake lines, though checking clearance is still important.
Vehicle Compatibility
Part no 84629787 is most commonly listed for:
- Chevrolet Silverado 1500 (2007–2013)
- GMC Sierra 1500 (2007–2013)
- Some years of the Chevrolet Avalanche and Suburban
- Possibly other GM-based 4WD platforms Always verify compatibility using your vehicle’s year, make, model, and drive type (4WD). Cross-reference with the manufacturer’s application list or a trusted parts specialist. Using the wrong kit can lead to poor ride quality or handling issues.
Benefits of a 2 Inch Suspension Lift for 4WD
A 2-inch lift provides several practical advantages without drastically altering the vehicle’s dynamics. It is an excellent entry-level upgrade for off-road enthusiasts and daily drivers alike.
Improved Ground Clearance
The most immediate benefit is additional clearance under the axle and chassis. Two inches can make a difference when navigating rocks, ruts, or uneven terrain. It also allows fitting slightly larger tires (typically up to 33 inches on many trucks), which further boosts clearance and traction.
Off-Road Performance
With a lifted suspension, approach and departure angles improve, helping the vehicle climb over obstacles without scraping. The kit also reduces the chance of the front bumper or underbody contacting the ground during steep ascents or descents. For moderate trails, a 2-inch lift is often sufficient for a noticeable increase in capability.
Installation Considerations
Installing a suspension lift kit can be done at home if you have mechanical experience, but it requires careful attention to detail and proper tools.
Tools Required
- Floor jack and jack stands
- Socket set (metric and SAE)
- Torque wrench
- Spring compressor (for coil-over units)
- Pry bar or pickle fork
- Wire brush (to clean threads)
- Thread locker (blue or red depending on manufacturer recommendations)
Time and Skill Level
Expect the job to take 4–8 hours for a first-time installer. The front suspension usually requires compressing coil springs, which is the most challenging part. The rear is typically simpler if it uses leaf springs or a solid axle. If you are not comfortable with spring compression or suspension work, professional installation is recommended. After installation, a front-end alignment is necessary, and you may need to adjust headlight aim to compensate for the lift.
Choosing the Right Lift Kit Parts
When selecting part no 84629787 or any comparable kit, consider these factors:
- Material quality: Billet aluminum spacers resist corrosion and last longer than plastic or low-grade metal.
- Sway bar link inclusions: Kits without them may require purchasing separately.
- Warranty: Some manufacturers offer limited warranties against defects.
- Customer support: Choose brands with good technical support for fitment questions. The kit should include all necessary hardware. Avoid buying used spacers or incomplete kits, as missing hardware can compromise safety.
Final Recommendation
Part no 84629787 is a solid option if your vehicle matches the listed applications and you want a cost-effective way to gain 2 inches of lift. It retains most factory ride comfort and does not require major driveline modifications. For best results, pair it with quality shocks designed for a 2-inch lift to maintain proper damping. Verify fitment before ordering, and consider professional installation if you lack experience. This kit can be a reliable step toward a more capable off-road 4WD without overcomplicating the build.