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If your Jeep Grand Cherokee feels loose through corners, pulls to one side, or makes clunking noises over bumps, the rear lower control arms deserve a close look. Replacing worn rear lower control arms can restore proper rear suspension geometry, reduce uneven tire wear, and bring back predictable handling for everyday driving and light towing. This guide covers seven shortlisted rear lower control arms chosen for their fitment, bushing design, and durability specifically for the Grand Cherokee.Below you will find practical notes on why each option made the list, plus the decision factors to weigh when selecting a replacement and tips for installation and maintenance.
Looking for other parts? See all Jeep Grand Cherokee parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | TRQ Rear Upper and Lower Control Arm and Ball Joint Set (4-Piece) |  |
| Best Quality Built to a higher standard if you want something more solid | MOOG RK642940 Rear Lower Control Arm (rearward) |  |
| Best Value The sweet spot between price and what you get | KAX Rear Lower Control Arm with Ball Joint for Jeep Grand Cherokee (1999–2004) |  |
| Best Budget The cheapest option that still gets the job done reliably | KAYULONE Rear Lower Control Arms Kit for Jeep Grand Cherokee (1999–2004) |  |
| Highest Rated A top-rated pick with lots of positive feedback | Detroit Axle Rear Control Arms Kit for 1999–2004 Jeep Grand Cherokee (4-piece) |  |
| Most Popular A crowd favorite that many people choose with confidence | Detroit Axle Rear Lower Rearward Control Arms Kit (Pair) |  |
| Best Seller A high-volume bestseller chosen again and again | Detroit Axle Rear Lower Control Arms Kit for Jeep Grand Cherokee (1999–2004) |  |
TRQ Rear Upper and Lower Control Arm and Ball Joint Set (4-Piece)
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Rear |
| Material Type | Chromium-Molybdenum Steel |
| Included Components | 1 Rear Upper Ball Joint, 1 Rear Upper Control Arm, 2 Rear Lower Control Arms |
This TRQ 4-piece rear control arm and ball joint kit replaces the rear upper and lower control arms plus the upper ball joint with pre-assembled, vehicle-specific components. It is intended as a direct-fit replacement so installers can swap parts without fabrication; that makes it suitable for routine rear suspension refreshes after worn bushings or noisy joints. The chromium-molybdenum steel construction and included ball joint reduce the number of separate parts to source, and TRQ provides DIY installation videos to simplify the process. In use the kit restores alignment geometry and reduces play that causes clunks, pulling, or uneven tire wear; multiple owners report a noticeably smoother, quieter ride after installation. Expect an alignment after install and be prepared that replacing control arms can be time and labor intensive for some vehicles. A few users have reported occasional fitment or ball-joint longevity issues on non-matching applications, so confirm exact vehicle compatibility before buying.
Best for: Buyers who want a full, direct-fit rear suspension replacement that restores handling and removes play without sourcing individual parts, and who value a balance of durability and DIY-friendly installation support.
Less Ideal for: If you need an ultra-high‑performance or heavy-duty off-road upgrade, or you want individual components only, this all-in-one OE-style replacement kit is not the best choice.
- Complete 4-piece kit includes upper ball joint and both upper and lower control arms for a full rear suspension refresh
- Pre-assembled, vehicle-specific fit reduces modification and simplifies DIY installation
- Chromium-molybdenum steel construction for improved strength over stamped alternatives
- Manufacturer provides installation videos to guide less experienced installers
- Requires wheel alignment after installation which adds cost and shop time
- Installation can be labor intensive and may require special tools or a second person
- Some reviewers reported occasional fitment or ball-joint durability problems on non-matching applications
Verdict: A practical, factory-style 4-piece rear control arm kit that restores ride quality and alignment with ready-to-install, vehicle-specific parts.
MOOG RK642940 Rear Lower Control Arm (rearward)
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Rear |
| Material Type | Alloy Steel, Aluminum, Cast Iron, Stainless Steel |
The MOOG RK642940 is a direct-fit rear lower control arm engineered to restore suspension geometry and steering precision on compatible SUVs. It installs in place of the factory arm to correct toe and alignment issues caused by worn or damaged components, helping reduce uneven tire wear and steering play. MOOG emphasizes structural strength and corrosion protection with heat-treated sections and protective coatings, which aim to extend service life under daily driving and rough road conditions. The arm is built from mixed metals appropriate for its load-bearing role and is intended as a like-for-like replacement so installation is straightforward for a professional or experienced DIYer. Limitations include vehicle-specific fitment only and the part list does not include bushings or ball joints if those need replacement, so expect to inspect adjacent suspension parts during service. For drivers focused on restoring factory handling and reliability, this control arm provides a practical, durable option.
Best for: Buyers who prioritize returning their Jeep Grand Cherokee to factory handling and alignment with a durable, serviceable replacement part and who prefer a brand known for chassis components.
Less Ideal for: Those seeking a performance-upgrade or modified suspension part beyond factory-spec geometry or buyers who need a full suspension rebuild kit that includes bushings and ball joints.
- Direct-fit vehicle-specific design simplifies installation and preserves factory suspension geometry
- Engineered for structural strength with heat-treated sections for improved durability
- Corrosion-resistant coatings applied to prolong service life in harsh conditions
- Made by a specialist chassis brand with a history of suspension-focused design
- Does not specify included bushings or ball joints so you may need extra parts for a complete repair
Verdict: Choose this MOOG rear lower control arm when you want a durable, direct-fit replacement to restore factory steering response and alignment on your Jeep Grand Cherokee.
KAX Rear Lower Control Arm with Ball Joint for Jeep Grand Cherokee (1999–2004)
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Front |
| Material Type | Alloy Steel |
| Unit Count | 1.0 Count |
This KAX rear lower control arm is a direct-fit replacement for 1999–2004 Jeep Grand Cherokee rear suspension, supplied with a pre-greased ball joint and housing for straightforward installation. It is made from alloy steel with a corrosion-resistant coating and reinforced rubber bushings intended to reduce vibration and noise while restoring correct wheel alignment and handling. Typical use is as a like-for-like swap during rear suspension repair or a front-to-back rebuild; the unit installs without drilling or modification and is compatible with the vehicle-specific mounting points. Notable features include pre-greased ball joints for less initial maintenance and a tested design for abrasion and fatigue resistance. Practical benefits are improved steering response and a smoother ride compared with worn factory components, plus the convenience of a ready-to-install assembly. Limitations are that this is a single-unit replacement sold as one count and it is intended only for the specified Jeep Grand Cherokee years, so buyers needing a matched pair or broader vehicle coverage should plan accordingly.
Best for: Buyers who want a practical, vehicle-specific replacement that restores rear suspension geometry and reduces noise without extra modification or tuning.
Less Ideal for: If you need a complete matched-pair kit or parts for models outside the 1999–2004 Grand Cherokee range, choose a different product or source the companion arm separately.
- Vehicle-specific fit for 1999–2004 Jeep Grand Cherokee for straightforward installation
- Pre-greased ball joint reduces initial servicing and speeds install
- Alloy steel construction with corrosion-resistant coating for durability
- Reinforced rubber bushings reduce vibration and road noise
- Sold as a single control arm so replace both sides if matching wear is a concern
Verdict: A durable, ready-to-install rear lower control arm that restores handling and reduces vibration for 1999–2004 Jeep Grand Cherokee owners looking for a practical factory-style replacement.
KAYULONE Rear Lower Control Arms Kit for Jeep Grand Cherokee (1999–2004)
| Brand Name | KAYULONE |
|---|---|
| Manufacturer Part Number | KY-641869-2CA |
| Auto Part Orientation | Rear |
| Kit Includes | 2x Rear Lower Control Arms – MS251028(K641869) |
These KAYULONE rear lower control arms replace the factory rear lower arms on Jeep Grand Cherokee models from 1999 through 2004. Supplied as a two-piece kit, the arms are built for corrosion resistance and include self-lubricating joints intended to reduce maintenance and noise compared with worn original components. Typical use is a like-for-like suspension repair to restore rear alignment, reduce play, and improve ride stability after bushings or arms have failed. The listing emphasizes precision checks for dimensional accuracy so they should install with standard mounting hardware and alignment rather than requiring modification. The biggest practical benefit is the value proposition: factory-style fit and corrosion protection at a lower price than many branded replacements. Limitations are that the listing does not include detailed material specs or pictured hardware, so buyers who need stamped certification, OEM part numbers beyond the provided manufacturer part number, or new ball joints included should confirm fitment and contents before purchase.
Best for: Buyers looking to repair rear suspension on a budget who prioritize a cost-effective, factory-style replacement that restores ride stability and alignment without premium branding.
Less Ideal for: Drivers seeking factory-certified parts, full hardware kits with torque specs, or upgraded performance control arms for heavy-duty or off-road use should consider higher-end or OEM options.
- Direct-fit replacement for Jeep Grand Cherokee 1999–2004 to restore rear suspension geometry.
- Corrosion-resistant finish prolongs service life in road salt and wet conditions.
- Self-lubricating joints reduce squeaks and lower maintenance needs compared with dry bushings.
- Listing lacks full detail on included hardware and specific materials used in construction.
Verdict: A budget-friendly, factory-style rear lower control arm kit that restores rear suspension function on 1999–2004 Jeep Grand Cherokees without the premium price.
Detroit Axle Rear Control Arms Kit for 1999–2004 Jeep Grand Cherokee (4-piece)
| Fitment | 1999-2004 Jeep Grand Cherokee |
|---|---|
| Kit contents | 1 Rear Upper Control Arm, 2 Rear Lower Control Arms, 1 Rear Upper Ball Joint |
| Material | Premium alloy |
| Fit Type | Vehicle Specific Fit |
| Unit Count | 4.0 Count |
This Detroit Axle kit supplies one rear upper control arm, two rear lower control arms and a rear upper ball joint as a vehicle-specific replacement for 1999–2004 Jeep Grand Cherokee models. It is designed as a direct-fit factory-quality replacement so installers can swap components without heavy modification. The parts are stamped from a premium alloy and finished to resist rust, which helps longevity on roads salted in winter. Buyers will appreciate the preassembled ball joint and the kit approach when replacing multiple worn rear suspension pieces at once, and several reviewers report straightforward fitment and improved rear-end stability after installation. On the downside some customers noted accessory mismatches—some sway bar links or retaining hardware may not match older factory pieces—so expect to reuse serviceable fasteners or check fit before assembly. The kit is best for owners who want a cost-effective rebuild with components intended to match factory fit and feel, and who will follow up with a professional alignment after installation.
Best for: A buyer who prioritizes dependable, factory-style replacements and wants to rebuild the rear suspension with matching components to restore stability and serviceability.
Less Ideal for: Not suited for someone seeking performance upgrades, custom suspension geometry, or a kit intended to change ride height or handling characteristics.
- Vehicle-specific direct-fit design simplifies installation and reduces modification.
- Includes matching upper and lower arms plus upper ball joint so multiple worn parts are replaced together.
- Premium alloy construction and anti-rust finish aim to improve durability in corrosive environments.
- Many buyers report good fitment and noticeable improvement in rear-end stability after replacement.
- Some included hardware and sway-bar link designs may not match older factory parts, requiring reuse of original fasteners or substitutions.
Verdict: Choose this kit when you want a straightforward, factory‑style rear suspension rebuild for a 1999–2004 Jeep Grand Cherokee to restore stability and serviceability.
Detroit Axle Rear Lower Rearward Control Arms Kit (Pair)
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Lower, Rear |
| Material Type | Alloy Steel |
| Manufacturer Part Number | K642940x2 |
These Detroit Axle control arms replace the rear lower rearward arms on compatible Dodge Durango and Jeep Grand Cherokee models as a direct-fit kit that includes left and right units. Built from alloy steel with a black finish, the assemblies are intended to mirror factory geometry so they install like a factory replacement and restore rear suspension alignment and handling. In use they address common symptoms of worn rear lower arms such as squeaks, looseness, and poor tracking; many buyers report straightforward installation and an OEM-like fit. The arms are promoted as high-strength and corrosion-resistant, and the kit carries a long warranty for added confidence. Practical limitations to note are that ball joint or bolt condition on the vehicle may require replacement hardware during installation, and some long-term reviews indicate mixed durability for the ball-joint area depending on driving and environment. This kit is best used when replacing both sides to maintain balanced rear suspension behavior.
Best for: Buyers who want a straightforward, factory-quality replacement for worn rear lower arms and prioritize fitment that matches factory geometry and documented user experience.
Less Ideal for: Drivers who need heavy-duty or performance-tuned suspension components for off-road abuse or track use should consider reinforced or performance-specific arms instead.
- Vehicle-specific direct-fit design for simple replacement and correct geometry
- Made from alloy steel for improved wear resistance and corrosion protection
- Sold as a pair to restore balanced rear suspension handling
- Designed to meet factory-quality fit and structural-strength claims
- Includes a 10-year manufacturer warranty for long-term assurance
- May require replacement mounting bolts or ball-joint hardware if the vehicle's originals are corroded or damaged
Verdict: Choose this pair when you want a direct-fit, factory-quality replacement to restore rear suspension fit and handling with the reassurance of extensive user feedback.
Detroit Axle Rear Lower Control Arms Kit for Jeep Grand Cherokee (1999–2004)
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Rear Lower |
| Material Type | Alloy Steel |
| Manufacturer Part Number | K641869x2 |
This Detroit Axle kit provides two rear lower control arms intended as direct-fit replacements for 1999–2004 Jeep Grand Cherokee models equipped with the heavy duty suspension. The arms are made from alloy steel and built with reinforced structure and factory-style geometry so they bolt in without major modification. Typical use is to replace worn or damaged control arms that cause clunking, uneven tire wear, or loose rear handling. Buyers can expect easier installation compared with fabrication-style parts and most owners report improved stability and ride quality after installation. The kit emphasizes corrosion resistance and fatigue strength, and Detroit Axle backs the part with a long warranty period. A small number of users have reported premature bushing wear, so expect to inspect bushings after heavy off-road use or long-term exposure to harsh conditions. Professional alignment after installation is recommended to restore correct tracking.
Best for: Buyers who prioritize a reliable, factory-style replacement to restore rear suspension stability and reduce steering looseness while minimizing installation complexity.
Less Ideal for: Not the best choice for builders seeking upgraded performance components for heavy-duty off-road use or custom suspension setups.
- Vehicle-specific direct-fit design for 1999–2004 Grand Cherokee heavy duty suspension
- Alloy steel construction with reinforced structure for improved durability
- Supplied as a left and right pair so both sides can be serviced at once
- Designed to match factory geometry to restore handling and ride quality
- Some reviewers reported premature bushing deterioration under heavy use
Verdict: A straightforward, factory-style replacement kit that restores rear stability on 1999–2004 Grand Cherokee models with heavy duty suspension.
Choosing the Right Jeep Grand Cherokee Rear Lower Control Arm: Key Factors to Consider
Fitment and Geometry
Correct fitment to the Grand Cherokee s rear suspension mounting points is the most critical factor. Even small differences in bracket placement or ball joint height change toe and camber under load, which can cause uneven tire wear and unpredictable handling.
Confirm that the control arm matches factory-style mounting hole spacing, bush orientation, and ball joint angle. Some aftermarket arms alter suspension geometry to raise or lower ride height or change roll steer; unless that is your intent, choose arms that replicate stock geometry to preserve factory alignment settings.
Bushing Design and Material
Bushing type affects ride comfort, noise, and longevity. Rubber bushings isolate noise and vibration well but can compress and degrade faster in hot climates or under heavy loads. Polyurethane offers firmer control and longer life but may transmit more vibration and produce more NVH when new.
Consider bonded or sleeve-replaceable bushings if you want a balance between serviceability and performance. For a Grand Cherokee used for towing or light off-road use, higher-durometer materials can reduce deflection while still providing acceptable comfort.
Ball Joint Quality
Many rear lower control arms integrate a ball joint that takes lateral and vertical loads during suspension travel. A robust, well-sealed ball joint resists contamination and premature wear, preserving steering and suspension response.
Look for boots with durable seals and grease retention features. If the design allows ball joint service or replacement, it can significantly extend the life of the control arm assembly compared with a fully integrated, non-serviceable unit.
Structural Strength and Corrosion Resistance
Control arms endure repeated load cycles, impacts from road debris, and exposure to salt and moisture. Steel stamped or forged arms typically provide high strength, while cast or extruded aluminum can save weight but must be evaluated for fatigue resistance.
Protective coatings, quality welds, and corrosion-resistant fasteners help prevent premature failure. For Grand Cherokees used in regions with road salt or frequent wet conditions, prioritize arms with durable finishes and replaceable hardware.
Hardware and Installation Features
Included installation hardware, alignment sleeves, and clear torque specifications make fitting a replacement arm more straightforward and reduce the chance of installation errors. Some arms ship with new bolts or eccentric alignment bushings that simplify achieving proper rear toe settings.
Consider whether the arm requires special tools or press-fitting for bushings. Units that allow bolt-in installation with serviceable bushings save time and reduce labor cost when compared with arms that need a full press or welding.
Warranty and Serviceability
A reasonable warranty indicates confidence in materials and workmanship. Serviceable designs where bushings or ball joints can be replaced extend usable life and reduce the total cost of ownership.
Check for accessible replacement parts and clear manufacturer guidance on allowable loads and usage. For owners who plan to keep their Grand Cherokee long-term, serviceability can be more valuable than the lowest upfront cost.
When To Suspect Rear Lower Control Arm Problems
Several symptoms point to rear lower control arm wear on the Grand Cherokee. Common signs include a clunking or knocking noise from the rear when going over bumps, a feeling of looseness in cornering, or an offset pull when driving straight. Uneven or accelerated tire wear on the rear tires can also signal control arm or bushing degradation.
Not every noise means the control arm itself is failing; worn bushings, loose mounting bolts, or damaged sway bar links can produce similar symptoms. Use a methodical inspection to isolate the source: check for visible bushing cracks, excessive play at the ball joint, and secure mounting hardware before deciding to replace the entire arm.
- Clunking over bumps or during direction changes
- Pulling to one side or inconsistent rear alignment
- Rear tire feathering or uneven wear patterns
- Visible bushing cracks, splits, or metal-to-metal contact
Installation Tips for the Grand Cherokee
Pre-align and measure before removing the old arm to speed reassembly and reduce the time the vehicle spends off the ground. Support the rear axle with a jack and use stands to keep the suspension in a safe, neutral position. Loosen mounting hardware only when the vehicle is supported and the suspension is unloaded to avoid sudden movement.
Torque specifications matter. Use factory torque values for mounting bolts and re-check fasteners after a short break-in period. If new arms include alignment sleeves or eccentric bolts, follow the adjustment procedure and plan for a professional wheel alignment after installation to ensure correct toe and camber.
- Support axle before loosening mounts
- Use factory torque specs and re-torque after break-in
- Plan for a wheel alignment after replacement
Bushing Replacement Vs Full-Arm Swap
Deciding whether to replace just the bushings or the whole rear lower control arm depends on the arm s condition and serviceability. If the arm shows no structural damage and the ball joint is in good condition, swapping bushings can be a lower-cost repair and restore proper isolation characteristics.
However, if the arm has bending, cracked welds, or an integrated non-serviceable ball joint, a full-arm replacement is the safer choice. Consider long-term serviceability and how often you expect to perform suspension maintenance when choosing between these options.
- Replace bushings when arm body and ball joint are sound
- Replace whole arm if structural damage or non-serviceable joints exist
- Factor in labor complexity and tool requirements
Maintenance Practices to Extend Control Arm Life
Regular inspections help catch early signs of wear. Check bushings for cracking or splitting and test ball joints for excessive play. Clean accumulations of dirt and road salt from suspension components and inspect protective boots for tears that allow contamination.
When possible, keep mounting hardware corrosion-free by applying anti-seize to threads and using properly coated fasteners. If your Grand Cherokee is used in wet or salted environments, more frequent checks during winter months will reduce the chance of unexpected failure.
- Inspect bushings and boots twice a year
- Keep mounting points clean and protected
- Replace damaged boots promptly to prevent contamination
How Replacement Arms Affect Alignment and Tire Wear
A properly fitted replacement rear lower control arm returns the rear suspension geometry to specification, which helps maintain even toe and camber under load. Misfit arms or incorrect installation can introduce persistent toe issues that accelerate tire wear and reduce straight-line stability.
After replacement, a professional alignment is essential. Small differences in arm length or mounting orientation amplify over suspension travel, so alignment ensures the changes do not transfer to handling or tire life.
- Proper fitment reduces premature tire wear
- Installation errors can introduce persistent alignment faults
- Always perform a wheel alignment after replacing arms
Still looking for the perfect fit?
Select your Jeep Grand Cherokee configuration to see the most relevant Lower Control Arms recommendations
How We Chose the Best Jeep Grand Cherokee Rear Lower Control Arm
We focused on criteria that matter for rear suspension components on the Jeep Grand Cherokee and used those filters to narrow a larger field to seven dependable choices. Primary evaluation criteria included fitment accuracy to factory mounting points and geometry, because correct alignment affects handling and tire life. Bushing type and material were assessed next, comparing rubber, polyurethane, and bonded designs for ride comfort and longevity. Structural strength and corrosion resistance were considered by looking at material construction and protective coatings that influence fatigue life under load. Hardware and mounting completeness were important, as included bolts, sleeves, and alignment sleeves reduce installation variability. Noise and vibration characteristics were judged by bushing design and expected NVH behavior. Finally, ease of installation and long-term serviceability were weighed to help owners who handle the work themselves.We excluded options that lacked clear vehicle-specific fitment data, had ambiguous mounting details, or used non-serviceable press-in bushings without replacement options. The result is a focused set of rear lower control arms that meet practical requirements for fit, durability, and predictable performance on the Grand Cherokee.
Our full evaluation process is outlined in our review methodology.
FAQ
What are common rear lower control arm symptoms on a Grand Cherokee?
Common symptoms include clunking noises over bumps, a loose or floppy feeling during cornering, and uneven rear tire wear. Visual signs such as cracked bushings or excessive play at the ball joint also indicate problems.
Can I replace just the bushings instead of the whole rear lower control arm?
Often you can if the arm s structure and ball joint are sound and the bushings are serviceable. If the arm has damage or an integrated non-serviceable joint, a full replacement is usually the safer option.
How urgent is it to replace a worn rear lower control arm?
Urgency depends on severity. Moderate bushing wear can be monitored, but if you notice clunking, excessive play, or rapid tire wear, replace the arm promptly to avoid safety and alignment issues.
Will replacing rear lower control arms fix rear alignment issues?
Replacing worn arms can restore proper suspension geometry, but a post-replacement wheel alignment is necessary to correct toe and camber settings and ensure even tire wear.
Are rear lower control arm noise issues always caused by the arm itself?
Not always. Sway bar links, loose bolts, or worn shock mounts can produce similar noises. A thorough inspection helps isolate the source before replacing parts.
Do rear lower control arms require special tools to install on a Grand Cherokee?
Many installations are straightforward with common hand tools, but some bushings require a press or specialized tools. Expect to support the axle and use torque wrenches; plan for a professional alignment afterward.
Final Verdict
When choosing rear lower control arms for a Jeep Grand Cherokee, prioritize correct fitment and durable bushing design to restore alignment and handling. Balance the desire for firmer control with acceptable noise and vibration levels depending on your driving style and load demands.Focus on arms that match factory geometry, offer serviceable components where possible, and come with complete mounting hardware. After installation, schedule an alignment to lock in the benefits and protect rear tire life.
Explore More:
- Check out all Jeep Grand Cherokee parts & accessories
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