OEM vs Aftermarket Control Arms: Which Is Better?

Find the Best Control Arms for your vehicle — top-rated and reliable options.

This article is part of our Control Arms Guide.

When a control arm starts clunking, develops bushing play, or its ball joint wears out, most DIY owners hit the same question fast: should you buy OEM or aftermarket? The right answer depends on more than price. Fitment, suspension tuning, material quality, included hardware, and the brand behind the part all matter.

Control arms affect alignment, steering feel, tire wear, braking stability, and ride comfort. A cheap part that fits poorly or uses low-grade bushings can create repeat repairs and uneven tire wear. On the other hand, a well-made aftermarket control arm can save money and perform just as well as, or sometimes better than, the factory part.

Here’s how OEM and aftermarket control arms compare, where each one makes sense, and what to check before ordering.

What a Control Arm Does

A control arm connects the steering knuckle to the vehicle’s frame or subframe and lets the suspension move in a controlled arc. Most control arms include bushings at the frame side, and many include a ball joint at the outer end. Depending on the vehicle, you may have upper and lower control arms in the front, and in some designs control arms in the rear as well.

• Maintain wheel position through suspension travel
• Help control alignment angles like camber and caster
• Absorb road vibration through bushings
• Provide stable steering and braking behavior

If the bushings crack or the ball joint develops play, symptoms can include clunks over bumps, wandering, poor steering return, vibration under braking, uneven tire wear, or an alignment that won’t hold.

OEM Control Arms Explained

OEM means Original Equipment Manufacturer. In practical terms, this is the same design and specification used by the automaker when the vehicle was built. Sometimes the part comes in the automaker’s box, and sometimes it comes from the original supplier brand that made it for the vehicle manufacturer.

Why OEM Is Appealing

• Usually offers the most predictable fit and geometry
• Matches the factory bushing stiffness and ride tuning
• Typically reduces the chance of noise, vibration, or alignment issues
• Often the safest choice for newer or more sensitive vehicles

For many drivers, OEM is the benchmark because it restores the suspension to factory behavior. If you liked how the vehicle rode and handled before the part wore out, OEM is the straightforward way to get back there.

Aftermarket Control Arms Explained

Aftermarket covers a wide range of parts made by companies other than the vehicle brand. That range is huge. Some aftermarket control arms are excellent and engineered to OE standards. Others are low-cost replacements built mainly to hit a price point.

Not All Aftermarket Parts Are Equal

This is the biggest point DIY owners should remember. Comparing OEM to aftermarket is not really one-vs-one. It is usually OEM vs premium aftermarket vs budget aftermarket. Premium brands may use forged or heavy-duty designs, upgraded corrosion protection, or improved bushing materials. Budget parts may have weaker bushings, lower-grade ball joints, inconsistent tolerances, or thin paint that rusts quickly.

• Premium aftermarket can match or exceed OE quality
• Mid-tier options often balance price and acceptable durability
• Cheap no-name parts carry the highest risk of poor fit and short life

OEM Vs Aftermarket Control Arms: Side-by-side Comparison

Fit and Installation

OEM usually wins on fitment consistency. Bolt holes, ball joint tapers, bushing dimensions, and arm geometry are typically exact. Good aftermarket parts can fit perfectly too, but lower-quality ones may have small dimensional differences that make installation harder or affect alignment range.

Ride Quality and Noise

OEM usually offers the most factory-like ride. Bushing stiffness is tuned for the vehicle’s weight, steering feel, and NVH control. Some aftermarket arms use stiffer bushings that improve response but increase harshness or noise. Others use softer or lower-quality rubber that feels vague or wears out early.

Durability

OEM durability is often strong, but not always unbeatable. On vehicles known for weak factory bushings or ball joints, a premium aftermarket arm may last longer. The catch is choosing the right brand. Cheap aftermarket parts often fail sooner than OEM, especially in rust-belt states or on rough roads.

Price

Aftermarket usually wins on price, sometimes by a lot. That matters because suspension work often comes in pairs, and an alignment is usually required after replacement. Saving money on the part can make the whole repair much more affordable, but only if you avoid doing the job twice.

Availability

Aftermarket often wins here too, especially for older vehicles. OEM parts may be backordered, discontinued, or only available through dealer channels. Aftermarket suppliers may also offer complete loaded arms with bushings and ball joints already installed, which simplifies a driveway repair.

Warranty

Warranty depends on brand, not just category. Some aftermarket brands offer strong limited lifetime warranties, while OEM coverage may be shorter but backed by the dealer network. A long warranty looks good on paper, but labor and alignments usually are not covered, so the real value is in not having a failure at all.

When OEM Is the Better Choice

OEM control arms are usually the smarter buy when fit, factory ride quality, and low risk matter more than the lowest upfront price.

• Your vehicle is newer or still under some type of warranty
• You want the original ride and steering feel back
• The suspension is known to be sensitive to geometry changes
• You have a luxury vehicle where NVH matters a lot
• You had bad luck with cheap aftermarket parts before
• The OEM supplier part is available at a reasonable price

OEM is also a strong choice when the repair is labor-intensive. If replacing the arm requires significant disassembly, it can make sense to spend more for the part with the best odds of trouble-free fit and service life.

When Aftermarket Is the Better Choice

Aftermarket makes sense when you choose carefully and match the part to how the vehicle is used.

• You need to keep repair costs under control
• A premium brand offers OE-level quality for less
• The factory part has a known weak spot and an upgraded version is available
• OEM is discontinued, backordered, or priced unreasonably high
• You want a loaded arm assembly to save time
• You are building for towing, off-road use, or performance and need a different bushing or arm design

A quality aftermarket arm can be an excellent choice on an older daily driver where value matters most. It can also be the better option if the aftermarket part corrects a design flaw, such as using more durable bushings or corrosion-resistant construction.

What Matters Most when Choosing a Control Arm

Brand Reputation

With aftermarket parts, the brand matters more than the word aftermarket itself. Look for established manufacturers with a strong track record in suspension components. Generic marketplace listings with unclear manufacturer information are the highest-risk choice.

Loaded Vs Bare Arm

Some control arms come with bushings and a ball joint already installed. Others are just the arm. For most DIY owners, a loaded arm is easier and often worth it because pressing bushings or ball joints requires tools and can add complexity.

Bushing Material

Rubber bushings usually provide the best street comfort and lowest noise. Polyurethane or stiffer compounds can sharpen response, but they may add vibration and squeaks if not designed well. For a normal commuter, OEM-style rubber is usually the best fit.

Corrosion Protection

If you live where roads are salted, pay attention to coating quality, welds, and hardware finish. Rust can shorten the life of the arm itself and make future service much harder.

Included Hardware

Some vehicles use torque-to-yield or single-use fasteners. Check whether new hardware is included and whether your service manual recommends replacement. Reusing old hardware can compromise the repair.

DIY Buying Tips Before You Order

1. Confirm the exact trim, drivetrain, suspension package, and production date. Control arm fitment can change mid-year.
2. Inspect both sides. If one arm has failed, the other may not be far behind.
3. Check whether the ball joint and bushings are already included.
4. Read reviews for fitment complaints, not just star ratings.
5. Compare photos of the new part to the original arm shape, bushing layout, and ball joint style.
6. Plan for an alignment after installation.
7. Torque bushing fasteners at normal ride height if the service procedure requires it.

That last point is easy to miss. Tightening some control arm bolts with the suspension hanging can preload the bushings and shorten their life. Always follow the factory procedure for your specific vehicle.

Common Mistakes to Avoid

• Buying the cheapest part available and assuming all control arms are the same
• Replacing only the ball joint when the bushings are already deteriorated
• Ignoring alignment after the job
• Using an impact gun on fasteners that should be torqued precisely
• Failing to compare left and right parts before starting the repair
• Not inspecting related items like sway bar links, tie rods, and struts while you are in there

A suspension repair is a good time to look at the bigger picture. If multiple front-end parts are worn, doing them together can save you from paying for more than one alignment.

So, Which Is Better?

For most DIY car owners, the real answer is this: OEM is usually better for guaranteed fit and factory-like ride quality, while quality aftermarket is better for value and, in some cases, improved durability.

If you want the lowest-risk repair on a newer vehicle or one that is sensitive to suspension tuning, choose OEM or the original supplier brand. If you are repairing an older daily driver and can buy from a reputable suspension brand, aftermarket can be the smarter value. What you generally want to avoid is the bargain-bin option with unknown quality control.

In short, don’t decide based on OEM versus aftermarket alone. Decide based on brand quality, included components, fitment accuracy, and how long you plan to keep the vehicle.

Related Maintenance & Repair Guides

• How to Choose the Right Control Arm for Your Vehicle
• Can You Drive with a Bad Control Arm?
• Stamped vs Forged Control Arms: Which Is Better?
• Control Arm: Maintenance, Repair, Cost & Replacement Guide
• Control Arm Replacement Cost

Related Buying Guides

Check out the Control Arms Buying Guides

FAQ

Are Aftermarket Control Arms Safe?

Yes, if they come from a reputable manufacturer and are installed correctly. The problem is not that a part is aftermarket; it is that low-quality suspension parts can have poor fit, weak bushings, or short-lived ball joints.

Do OEM Control Arms Last Longer than Aftermarket Ones?

Often yes, but not always. OEM parts usually offer predictable durability, while premium aftermarket can match or exceed it. Cheap aftermarket parts are the ones most likely to wear out early.

Should I Replace Control Arms in Pairs?

It is usually a good idea, especially if both sides have similar mileage and age. If one side has worn bushings or a loose ball joint, the other side may be close behind.

Do I Need an Alignment After Replacing a Control Arm?

In most cases, yes. Even small changes in arm position or bushing condition can affect alignment, and skipping it can lead to pulling or uneven tire wear.

Is It Better to Replace Just the Ball Joint or the Whole Control Arm?

If the control arm has pressed-in serviceable joints and the bushings are still good, replacing just the ball joint can make sense. But if the bushings are cracked or the arm comes as a loaded assembly, replacing the whole arm is often the better long-term repair.

What Is a Loaded Control Arm?

A loaded control arm comes with bushings preinstalled and usually includes the ball joint. It saves time and avoids the need for a press, which makes it a popular choice for DIY repairs.

Can a Bad Control Arm Cause Tire Wear?

Yes. Worn bushings or a loose ball joint can let the wheel move out of alignment, which can cause feathering, inner-edge wear, or other irregular tire patterns.

Want the full breakdown on Control Arms - from costs and replacement timing to DIY tips and how to choose the right option? Head over to the complete Control Arms guide.