ReadyLift Suspension RL UPPER BALL JOINT FOR 4'' KIT 67-3941

The ReadyLift Suspension 67-3941 Replacement Upper Ball Joint is the factory-correct, heavy-duty replacement ball joint designed specifically for ReadyLIFT upper control arms on 2019 and newer GM 1500 trucks. If your leveling kit, SST lift, or Big Lift kit came with ReadyLIFT upper control arms and your ball joint is worn, making noise, or showing play, this is the exact part ReadyLIFT specifies for the repair — so you can restore safe, precise suspension geometry without replacing the entire control arm.

Key Features & Benefits

• Heavy-Duty Construction: Built to ReadyLIFT's heavy-duty specification, this replacement ball joint is engineered to handle the additional stress of a lifted or leveled GM 1500 — not a generic OEM-style unit that wasn't designed for the altered suspension geometry of a lifted truck.
• Includes Zerk Fitting: Comes with a grease zerk fitting, allowing you to periodically lubricate the ball joint and extend its service life — an important maintenance step that is often overlooked but critical on serviceable aftermarket ball joints.
• Comes with New Fasteners: The kit includes new hardware so you're not reusing stretched or fatigued bolts during reinstallation, which supports a cleaner, safer install.
• Replaces Just the Ball Joint — Not the Whole Arm: Because this ball joint is a press-in/press-out design for ReadyLIFT UCAs, you can replace only the worn component rather than purchasing an entirely new upper control arm — saving significant cost.
• SAEJ2492 Compliant: Meets the SAE J2492 ball joint standard, providing a recognized benchmark for performance and safety in aftermarket suspension components.
• Estimated Install Time ~1.3 Hours: ReadyLIFT rates the replacement at approximately 1.3 hours (±0.5 hours), excluding alignment and wheel/tire assembly, making it a straightforward shop job.

Specifications

• Part Number: 67-3941
• Brand: ReadyLift Suspension
• Type: Upper control arm ball joint (replacement)
• Quantity: 1 ball joint per kit
• Includes: 1 heavy-duty ball joint, new fasteners, zerk fitting
• SAE Standard: SAEJ2492
• Estimated Install Time: 1.3 hours ±0.5 hours (excluding alignment and wheel/tire assembly)
• Price: $49.95

Fitment

This ball joint is a replacement specifically for ReadyLIFT upper control arms used on 2019 and newer GM 1500 trucks (Chevrolet Silverado 1500 and GMC Sierra 1500). It is compatible with the following ReadyLIFT suspension systems that include ReadyLIFT upper control arms:

• 44-3980
• 66-3921
• 67-3940D
• 67-3940P
• 69-3920
• 69-3940

Important: This ball joint is intended only for ReadyLIFT kits that include ReadyLIFT upper control arms. It is not a replacement for the factory GM OEM ball joint, nor is it compatible with ReadyLIFT kits that do not include upper control arms. Always verify your specific kit number before ordering.

What's in the Box

• 1 × ReadyLIFT heavy-duty replacement upper control arm ball joint
• New fasteners (hardware for installation)
• Zerk grease fitting

Why Buy from ThreePiece.us

At ThreePiece.us, we specialize in suspension, wheels, and performance fitment — and we understand that getting the right replacement part for your specific lift kit matters. Our team has served 10,000+ customers and is available to help you verify that the 67-3941 is the correct ball joint for your ReadyLIFT kit and your truck before you order. Every order ships free, and if you'd rather spread the cost, Affirm financing is available at checkout so you can get your truck back on the road without delay. Questions? Reach out to our fitment specialists directly — we're here to help.

Frequently Asked Questions

Q: Which ReadyLIFT kits is this ball joint compatible with?
A: The 67-3941 is the replacement ball joint for ReadyLIFT kits 44-3980, 66-3921, 67-3940D, 67-3940P, 69-3920, and 69-3940 — specifically kits that include ReadyLIFT upper control arms for 2019 and newer GM 1500 trucks.

Q: Do I need to replace the entire upper control arm, or just the ball joint?
A: You only need to replace the ball joint itself. The ReadyLIFT upper control arm is designed so the ball joint can be pressed out and a new one pressed in, making the 67-3941 a cost-effective repair rather than a full arm replacement.

Q: Does the ball joint require greasing, and does this kit include a zerk fitting?
A: Yes — unlike sealed OEM ball joints, this ReadyLIFT heavy-duty ball joint includes a zerk fitting and is designed to be greased periodically. Regular greasing is an important maintenance step to maximize the life of the joint, especially on lifted trucks driven on rough roads.

Q: Will I need an alignment after replacing the ball joint?
A: ReadyLIFT notes that an alignment may be required after installation. Plan to have your vehicle aligned after the ball joint replacement to ensure proper handling and tire wear. ReadyLIFT also recommends checking headlamp aim and, if your truck is equipped with ADAS safety systems, having those systems verified or recalibrated after any suspension work.