Check a control arm replacement quote
A control arm quote can mean a complete arm with new bushings and ball joint, or only the bushings or ball joint pressed into the old arm. Enter what the shop wrote and the scope stays visible beside the price.
- Checks whether the lines on your written quote add up to its total.
- Shows whether the quote is for a full arm, bushings only or a ball joint only.
- Compares two quotes line by line and by scope: side, upper or lower arm, and alignment.
- Publish a typical price: RepairWorth has no licensed U.S. price data for control arm work yet.
- Inspect your suspension or tell you whether a bushing or ball joint is worn.
Simplified drawing of a lower control arm with its bushings and ball joint. Not to scale and not a diagnosis.
Usually named on this kind of quote
- Control arm
- Bushings
- Ball joint
- Steering knuckle
Start with the total.
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Your quote
Itemized linesAdd only what the quote states
Scope checklistIncluded, excluded or not specified
Second quote
Itemized linesAdd only what the quote states
Scope checklistIncluded, excluded or not specified
Line by line
These figures are fictional interface fixtures. Loading one replaces unsaved entries in Quote A.
Enter a total or line
Nothing is treated as zero until you enter zero.
- Known itemized amount
- —
- Unspecified lines
- 9
- Unexplained difference
- —
- After stated core refund
- —
- Is this quote for a complete control arm, the bushings only, or the ball joint only?
- Which side and which arm, upper or lower, front or rear?
- What did the inspection find, and can I see it: play in the joint, torn rubber, or damage?
- Is a wheel alignment included, and is it needed after this work?
- Is the part new, and what grade or brand is quoted?
Arithmetic and scope notes only. RepairWorth does not rate the shop, diagnose the vehicle or know local market prices.
What the job usually involves.
A control arm links the wheel assembly to the vehicle’s frame or subframe and lets the wheel move up and down. It pivots on rubber bushings at the frame end and usually connects to the steering knuckle through a ball joint. Rubber-bushed arms are usually tightened with the suspension at its normal ride height, as the service information describes, so the bushings are not left twisted.
On many vehicles the bushings and ball joint are sold only as part of a complete arm. On others they can be pressed out and replaced separately, which takes more labor but fewer parts. Some arms are mounted with cam bolts that set the wheel angles, so an alignment is often part of the job.
What a complete written quote should state.
- The side and position: left or right, front or rear, upper or lower.
- Complete arm, bushings only or ball joint only.
- The part grade, brand or part number.
- Any new bolts, nuts or cam bolts the procedure calls for.
- Whether a wheel alignment is included.
- Labor as hours or a flat price, shop supplies and tax.
- The written warranty on parts and labor.
SourceFederal Trade Commission — Auto Repair Basics (opens an external site)
What changes the total.
Scope usually matters most: one arm or a pair, a complete arm or only bushings, and whether an alignment follows. Pressing bushings out of an old arm can take longer than fitting a complete arm.
The vehicle matters as well. Rust on fasteners, aluminum arms and multi-link rear suspensions can change parts and labor. Part grade, the local labor rate and tax account for the rest.
Full arm, bushings or ball joint?
Bushings are the rubber pivots and a ball joint is the swiveling joint at the wheel end. When only one of them is worn, some shops replace that part alone; others quote the complete arm because it includes both and may save labor.
Neither approach is automatically wrong, and the vehicle design may decide it. Ask which one the quote assumes and why, and compare quotes that make the same choice.
When a second opinion is worth it.
- Both sides are recommended when the inspection notes wear on only one.
- The quote says “front end work” without naming the arm, side or part.
- One quote is for a complete arm and the other for bushings only.
- Alignment is missing from one quote and included in the other.
- Tie rod ends, stabilizer links or other front-end parts are added without a written finding for each one.
A worn ball joint or loose control arm can affect steering and tire contact. If the steering feels loose or you hear knocking over bumps, have it inspected promptly rather than driving far to compare quotes.
What to find in writing.
- Side statedLeft, right or both, and front or rear.
- Upper or lower armMany vehicles have more than one arm per corner.
- Complete armA new arm that comes with its bushings and often the ball joint.
- Bushings onlyNew bushings pressed into the existing arm.
- Ball joint onlyA separate joint replaced where the design allows it.
- New bolts or nutsSome fasteners are meant to be replaced once removed.
- Alignment after the workStated as included, separate or not needed, with any steering sensor reset.
- Written parts-and-labor warrantyLength and what it covers.
Four checks that apply to every quote.
- Get it in writing first.Ask for a written estimate before work starts, and ask the shop to contact you for approval before doing anything that is not on it.
SourceFederal Trade Commission — Auto Repair Basics (opens an external site)
- Know the rules in your state.Several states regulate estimates. In California any charge above the written estimate needs your consent. Florida requires a written estimate for work over $150 and caps an unapproved overrun at $10 or 10 percent, whichever is greater, up to $50. In Michigan, unless you signed a waiver, a shop may exceed the estimate by up to 10 percent or $50, whichever is less, without asking you again. Other states have their own rules.
SourcesCalifornia Legislature (leginfo) — Business and Professions Code § 9884.9 (Automotive Repair Act) (opens an external site)Florida Legislature (Online Sunshine) — Florida Statutes § 559.905 Written motor vehicle repair estimate and disclosure statement required (opens an external site)Florida Legislature (Online Sunshine) — Florida Statutes § 559.909 Notification of charges in excess of repair estimate (opens an external site)Michigan Legislature — MCL 257.1332 (Motor Vehicle Service and Repair Act, Sec. 32) (opens an external site)
- Check for open recalls.Look up the vehicle identification number (VIN) on NHTSA's recall site; the search covers recalls from the last 15 years. Safety recall repairs are done free of charge at a dealer.
- Ask for the old parts.Asking for replaced parts back is a simple way to confirm the work, except for parts that must be returned for a core charge or a warranty claim.
SourceFederal Trade Commission — Auto Repair Basics (opens an external site)
Questions for a
control arm replacement quote.
- 01Is this quote for a complete control arm, the bushings only, or the ball joint only?
These are different parts and labor operations. A bushing price and a complete-arm price describe different jobs.
- 02Which side and which arm, upper or lower, front or rear?
Many vehicles have several arms per corner. Two quotes should name the same one.
- 03What did the inspection find, and can I see it: play in the joint, torn rubber, or damage?
Ask for the specific finding. How a ball joint is checked for play depends on how the vehicle is supported, and the manufacturer's procedure says how.
- 04Is a wheel alignment included, and is it needed after this work?
Replacing an arm can change the wheel angles. One quote may include the alignment and the other may not.
- 05Is the part new, and what grade or brand is quoted?
Complete arms are sold in several grades. A lower total can simply mean a different part.
Terms, in plain English.
- Control arm
- The arm that connects the wheel assembly to the frame or subframe and lets the wheel move up and down.
- Bushing
- A rubber or polyurethane sleeve that lets the control arm pivot quietly at the frame.
- Ball joint
- A ball-and-socket joint that lets the wheel pivot and steer while moving up and down.
- Steering knuckle
- The part that carries the wheel hub and turns with the steering.
- Wheel alignment
- Setting the wheel angles to the vehicle maker’s specification, often after suspension work.
- Cam bolt
- An off-center bolt that adjusts a wheel angle when turned. Arms mounted with cam bolts need the angles reset after the arm is replaced.
Where the facts come from.
- Federal Trade Commission — Auto Repair Basics (opens an external site)Accessed 2026-09-22
- California Legislature (leginfo) — Business and Professions Code § 9884.9 (Automotive Repair Act) (opens an external site)Accessed 2026-09-22
- Florida Legislature (Online Sunshine) — Florida Statutes § 559.905 Written motor vehicle repair estimate and disclosure statement required (opens an external site)Accessed 2026-09-22
- Florida Legislature (Online Sunshine) — Florida Statutes § 559.909 Notification of charges in excess of repair estimate (opens an external site)Accessed 2026-09-22
- Michigan Legislature — MCL 257.1332 (Motor Vehicle Service and Repair Act, Sec. 32) (opens an external site)Accessed 2026-09-22
- National Highway Traffic Safety Administration — Check for Recalls: Vehicle, Car Seat, Tire, Equipment (opens an external site)Accessed 2026-09-22
What this page cannot tell you.
- No typical or local price is shown: RepairWorth has no licensed U.S. price data for control arm work yet.
- The guide is general. It cannot replace an inspection of your vehicle or its manufacturer’s service information.
Content status: Technical review: AI-assisted, against common service practice, 2026-09-22; not reviewed by a certified technician.