Control Arm
Wheel-hub locating arm. This range cross-references 437 OE numbers for vehicles from 16 makes. The widest coverage is for Toyota, Honda, Nissan, Lexus, and Scion.
- OE numbers
- 437
- Vehicle brands
- 16
- ISO 9001 certified
- Taiwan manufacturer · since 1984
- Ships globally · from USD 5,000
By vehicle brand 10
Control Arm 437 OE numbers
What this part does
Wheel-to-chassis kinematic link
The control arm has two mounting points to the chassis — both with rubber or polyurethane bushings that absorb vibration — and one outer ball joint that connects to the steering knuckle. This three-point mounting allows the knuckle to pivot for steering while the arm swings up and down through suspension travel, keeping the wheel in the correct plane throughout its arc.
Camber, caster and toe geometry control
The geometry of the control arm determines how camber and caster angles change as the suspension compresses and extends. A well-designed arm keeps negative camber gain through bump, improving cornering grip. Engineers use the arm length and mounting angles to set the roll center height, which governs how much the body rolls in corners relative to wheel load transfer.
Load distribution between upper and lower
In a MacPherson strut system the single lower control arm handles all lateral and longitudinal forces while the strut bearing takes the vertical load. In a double-wishbone system both arms share the load and offer finer geometry control, which is why performance cars and heavy SUVs favor the double-wishbone layout despite its greater complexity and cost.
Full guide: how it works, construction and failure symptoms →
Where the control arm is used
Control arms locate the wheel on independent suspension and are used at the front and rear of most current passenger cars and SUVs. Designs include a single lower arm on MacPherson strut suspension, upper and lower arms on double-wishbone suspension, and several separate links on multi-link rear suspension.
Sourcing notes for buyers
A control arm may be supplied bare, with bushings fitted, or with bushings and a ball joint fitted. The vehicle maker's OE number defines which configuration it is, which is why matching by OE number matters more for control arms than matching by vehicle alone. Each position (front or rear, upper or lower, left or right) usually has its own OE number.
What to match before ordering
- The OE number for the exact position: front or rear, upper or lower, left or right
- What is fitted: bushings, ball joint, both or neither
- Ball-joint stud taper and thread, if a joint is included
- Vehicle model, model years and drive type where the vehicle maker distinguishes them
How OE cross-referencing works
An OE (original equipment) number is the part number a vehicle maker gives a component. Each part in this catalogue is listed under the OE numbers it replaces and under the equivalent numbers other parts makers use, so the same part can be found from any of those codes.
Search an OE number to see the matching part, the vehicles it fits and its full cross-reference list. SLOOP parts are aftermarket replacements; vehicle brands and OE numbers are cited only to identify fitment. Search →
How to order
- Minimum order value: USD 5,000 per order, quoted and invoiced in US dollars.
- Minimum per part: 20 pcs for in-stock items, 1,000 pcs for make-to-order runs. Parts from different categories can be combined to reach the order value.
- Payment: full prepayment by bank transfer (T/T) before shipment. No credit terms and no samples.
- Lead time: 90–120 days for make-to-order parts and 15–30 days for in-stock parts, counted from order confirmation.
To get a quote, send your OE numbers as a list (Excel, Word, PDF or a photo). Every number is matched against the catalogue and answered in one consolidated quote.
Upload your listCommon questions about control arms
What is a control arm?
A control arm is the A-shaped or L-shaped link that connects the front wheel hub carrier (steering knuckle) to the vehicle's chassis or subframe, allowing the wheel to rise and fall with the road surface while remaining under lateral and longitudinal control. Every independent front suspension design uses at least one control arm per side; some double-wishbone and multi-link designs use two — an upper and a lower — while the MacPherson strut layout uses only a lower control arm, relying on the strut itself to handle the upper location.
How many control arms do you carry?
437 OE numbers across 16 vehicle brands. Use the brand chips above to filter by your target vehicle.
Are these aftermarket or genuine OEM parts?
Aftermarket. SLOOP has been forging chassis components at our Taichung factory since 1984. We reference OEM part numbers under nominative fair use solely to identify vehicle compatibility — every part is form-fit-function tested against the listed OE specifications.
What is the minimum order?
USD 5,000 invoice minimum. In-stock parts: 20 pcs minimum per part. Make-to-Order parts: 1,000 pcs minimum per part (USD 5,000 auto-satisfied at MOQ). T/T payment, ships globally from Taiwan.
How fast can you ship?
In-stock parts ship in 15–30 days from PO. Make-to-Order parts are 90–120 days (forge → machining → finishing → QC → packing). Sea freight from Taiwan port (standard); air freight available on request.
How do I confirm that a control arm fits a specific vehicle?
Search its OE number. The OE number page lists the vehicles the part is cross-referenced to by make, model and year. If you only know the vehicle, use the vehicle-brand links on this page to see the OE numbers listed for that make.
Can I order these parts under my own brand?
Yes. OEM orders (your brand on a standard part) and ODM orders (a part produced to your drawing or specification) are accepted, subject to minimum quantities and, where needed, tooling discussions.
Does a control arm come with the ball joint and bushings?
It depends on the OE number. Some control arms are supplied as a complete assembly with bushings and ball joint fitted; others are supplied without one or both. The OE number identifies the configuration.
Are left and right control arms different parts?
On most vehicles, yes. Left and right arms are mirror images and carry separate OE numbers, so check the number for each side.
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