Moog Chassis Parts RK642013 Suspension Control Arm Kit: A Complete Buyer’s Guide

When your vehicle’s suspension starts showing signs of wear—clunking noises, uneven tire wear, or a loose steering feel—the control arms are often the culprit. The Moog Chassis Parts RK642013 Suspension Control Arm Kit is a popular replacement option for many trucks and SUVs. This guide covers everything you need to know about the RK642013 kit: what it fits, its key features, installation considerations, and how to decide if it’s the right choice for your vehicle.

What Is the Moog RK642013 Control Arm Kit?

The Moog RK642013 is a complete suspension control arm kit designed to replace worn or damaged front lower control arms on specific vehicles. Each kit typically includes both left and right control arms, along with necessary hardware such as bushings, ball joints, and bolts. Moog is a well-known brand in the aftermarket chassis parts industry, recognized for durable construction and engineering that often meets or exceeds OEM specifications.

Vehicle Compatibility: Which Models Use the RK642013?

Before purchasing, it’s critical to confirm that the RK642013 fits your vehicle. This kit is engineered for select General Motors trucks and SUVs, commonly found on:

• Chevrolet Silverado 1500 (2007–2013)
• GMC Sierra 1500 (2007–2013)
• Chevrolet Avalanche (2007–2013)
• Chevrolet Suburban 1500 (2007–2013)
• GMC Yukon XL 1500 (2007–2013)
• Cadillac Escalade (2007–2013)

Always verify your vehicle’s year, make, and model against Moog’s official fitment guide. While this list covers common applications, some variations exist based on drivetrain (2WD vs. 4WD) and suspension type (standard vs. Z71). The RK642013 is generally for the front lower position, so check your specific needs.

Key Features of the Moog RK642013 Kit

Understanding what makes this kit stand out can help you compare it with other options.

1. Premium Ball Joint Design

Moog uses a hardened steel ball joint with a protective grease boot and a wear-indicating feature. The boot helps keep contaminants out, and the grease fitting allows for periodic lubrication, extending service life. Many OEM ball joints are sealed and non-greaseable, so the Moog design offers added longevity.

2. Bushings with Variable Rate Technology

The RK642013 includes high-quality rubber bushings engineered to reduce noise, vibration, and harshness (NVH) while maintaining proper suspension geometry. Some Moog control arms feature variable-rate bushings that allow controlled compliance during cornering and braking, improving ride comfort without sacrificing handling.

3. Full Hardware Kit

Each kit comes with new bolts, nuts, and often cotter pins, ensuring you have everything needed for a proper installation. Reusing old hardware—especially stretch bolts—can lead to loosening or failure, so this is a valuable inclusion.

4. Corrosion Resistance

The control arms are coated with a rust-resistant finish, often a powder coating or electrodeposition paint. This is especially important for vehicles driven in snowy or salty environments.

Why Replace Control Arms in Pairs?

When one lower control arm fails, the opposite side is likely not far behind due to similar mileage and wear. Replacing both arms (as the RK642013 kit does) ensures balanced handling and suspension performance. It also saves labor costs in the long run, since alignment fees and shop time are incurred only once.

Installation Considerations

Replacing control arms is not overly complex for experienced DIYers, but it does require specific tools and safety precautions. Here are the basics:

Tools You’ll Likely Need

• Floor jack and jack stands
• Socket set and torque wrench
• Ball joint separator (or pickle fork)
• Breaker bar
• Lubricating grease (for greaseable ball joints)

Steps Overview

1. Safety first: Lift the vehicle and secure it on jack stands. Remove the wheel.
2. Disconnect the sway bar link (if connected to the control arm).
3. Remove the ball joint nut and separate the ball joint from the steering knuckle using a separator.
4. Support the lower control arm with a jack (the spring is under tension). Carefully lower the jack to release spring pressure.
5. Remove the pivot bolts securing the control arm to the frame. Note: some bushings may need to be pressed out; but with the RK642013, new bushings are pre-installed, so you swap the whole arm.
6. Install the new control arm in reverse order, torquing all fasteners to manufacturer specifications (usually found in a repair manual or online).
7. Grease the ball joint and reassemble.
8. Get a professional alignment after installation to ensure proper tire wear and handling.

Important: If you are not comfortable compressing springs or working with suspension, have a certified mechanic perform the installation. Improper torque or alignment can lead to dangerous handling.

Comparing the Moog RK642013 to OEM and Other Brands

When shopping for suspension parts, you’ll encounter OEM (General Motors) parts, Moog, and other aftermarket brands like AC Delco, TRW, and Mevotech. Here’s how the Moog kit stacks up:

vs. OEM

• Cost: Moog is typically cheaper than new OEM parts from the dealership, yet offers similar or upgraded features (e.g., greaseable ball joints).
• Quality: Moog is considered premium aftermarket. Many mechanics choose Moog over OEM because of the added longevity from greaseable joints and robust bushings.

vs. Budget Aftermarket

• Price: Budget brands (e.g., Duralast, Detroit Axle) can be significantly cheaper, but may use lower-quality rubber, less durable ball joints, and thinner metal. The Moog kit often lasts longer and provides better ride quality.
• Hardware: Budget kits often lack hardware or include cheap bolts. Moog includes quality fasteners.

vs. High-Performance (e.g., Mevotech Supreme)

• Features: Mevotech Supreme offers even more robust designs, like double-sealed ball joints, at a higher price. Moog sits in a good middle ground of durability and value.

For most daily-driven trucks and SUVs, the Moog RK642013 offers an excellent balance of cost, durability, and ease of installation.

Common Issues and Troubleshooting

Even with high-quality parts, some issues can arise:

• Ball joint boot damage: If the grease boot tears during installation, the joint will wear quickly. Inspect boots carefully and replace if damaged.
• Loose bolts: Always use a torque wrench. Under-tightened bolts can loosen over time, causing noises and unsafe conditions.
• Alignment problems: After control arm replacement, alignment is mandatory. If the vehicle still pulls or wanders, check that all components (struts, tie rods, etc.) are in good condition.

Where to Buy the Moog RK642013

While we avoid specific marketplaces, you can find this kit at many auto parts stores (both chain and independent). Look for an authorized Moog dealer to ensure authenticity and warranty support. The kit price typically ranges from $150 to $250 per side, depending on the retailer and current promotions.

Final Recommendation

If your 2007–2013 GM truck or SUV needs lower control arms, the Moog Chassis Parts RK642013 Suspension Control Arm Kit is a smart choice. It offers superior ball joints with grease fittings, robust bushings, and all necessary hardware—making it a step above many competitors. While budget options exist, the Moog kit’s durability and ride quality justify the moderate price premium. For DIY enthusiasts, the kit simplifies installation because everything is pre-assembled. For shop installations, it’s a reliable part that will satisfy customers.

Bottom line: If you want a replacement that will restore factory-like handling and last longer than economy parts, go with the Moog RK642013. Just confirm your vehicle’s compatibility and plan for a professional alignment afterward.