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          URO Parts URO-013725 - Suspension Control Arm (Front Left Upper)

          MPN: URO-013725
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $5.01
          Out of stock

          Product Overview

          The URO Parts URO-013725 Suspension Control Arm for the Front Left Upper position is engineered to enhance your vehicle's handling and stability. This control arm is designed to meet or exceed OE specifications, ensuring superior quality, reliability, and fitment for your BMW. Manufactured with precision, it provides a perfect fit for various BMW makes and models from 1982 to 1988. Choose URO Parts URO-013725 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This URO Parts URO-013725 is equivalent to or replaces the following part numbers: 31 12 1 132 341, 31121132341, URO013725, 520-729, 520729, 31 12 1 132 353MY, 31121132353MY, 31121132353, 371 06030 502, 37106030502, 371 06030 054, 37106030054.

          Vehicle Compatibility

          • BMW 633CSi 3.2 (1982-1984)
          • BMW 528e 2.7 (1982-1988)
          • BMW 533i 3.2 (1983-1984)
          • BMW 524td 2.4 (1985-1986)
          • BMW 535i 3.5 (1985-1988)
          • BMW 635CSi 3.5 (1985-1989)
          • BMW M6 3.5 (1987-1988)
          • BMW L6 3.5 (1987)
          • BMW 535is 3.5 (1988)
          • BMW M5 3.5 (1988)

          This also fits other applications. Please use the vehicle selector tool to verify fitment.

          Why Choose Newparts.com?

          • Trusted by DIYers and pros for over 15 years
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          • Fast, reliable shipping from our U.S. warehouses

          Frequently Asked Questions

          What is the primary function of the URO-013725 control arm?

          The URO Parts URO-013725 control arm connects the wheel assembly to the vehicle's frame, ensuring proper alignment and stability during driving.

          How do I know if the URO-013725 is compatible with my vehicle?

          To ensure compatibility with your vehicle, check our vehicle selector tool or refer to the part numbers listed for your specific BMW model.

          What are some common symptoms of a failing control arm?

          Common symptoms include unusual tire wear, clunking noises during turns, and poor handling. If you suspect issues, consider replacing with URO Parts URO-013725 for optimal performance.

          Can I install the URO-013725 control arm myself?

          While DIY installation is possible, it is recommended to consult a professional mechanic if you are not experienced with suspension components.

          Why should I choose URO Parts for my control arm replacement?

          URO Parts is known for its commitment to quality and reliability, making the URO-013725 an excellent choice for restoring your vehicle's suspension performance.

          Order URO Parts URO-013725 today for a factory-correct replacement that restores safety and performance.

            • Newparts SKU
              4305629
            • Weight
              6 lbs
            • Dimensions (L x W x H)
              20 x 6 x 2 in
            • Manufacturer Part #
              URO-013725
          • Brand
            URO Parts
          • Position
            Front Left Upper
          • Manufacturer
            URO Parts
          • MPN
            URO-013725
          • Features
            Adjustable : No
            Ball Joint Bearing Material : Metal
            Ball Joint Housing Material : Steel
            Ball Joint Included : Yes
            Ball Joint Mounting Type : Press-in
            Ball Joint Stud Type : Threaded
            Ball Stub Thread Size : M14 x1.5
            Bushing Color : Black
            Bushing Material : NR
            Bushings Included : Yes
            California Proposition 65 : WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
            Color : Black
            Control Arm Construction : Upper
            Dust Boot Color : Black
            Dust Boot Material : Polychloroprene
            Finish : Black Epoxy
            Grade Type : Regular
            Grease Fitting Included : No
            Greaseable : No
            Length : 450
            Locking Nut Included : Yes
            Material : Forged Steel
            Mounting Hardware Included : No
            Pre-Greased : Yes
          • OE Part Numbers
            31 12 1 132 341, 31121132341
          • Cross Reference Numbers
            URO013725, 520-729, 520729, 31 12 1 132 353MY, 31121132353MY, 31121132353, 371 06030 502, 37106030502, 371 06030 054, 37106030054
          • Part Type
            Suspension Control Arm
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          1988BMWM6Base (3.5 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1988BMWM5Base (3.5 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1988BMW535iBase (3.5 L6 GAS)
          1988BMW535isBase (3.5 L6 GAS)
          1988BMW528eBase (2.7 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1988BMW635CSiBase (3.5 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1987BMWM6Base (3.5 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1987BMW535iBase (3.5 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1987BMW528eBase (2.7 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1987BMWL6Base (3.5 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1987BMW635CSiBase (3.5 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1982BMW633CSiBase (3.2 L6 GAS)Notes: Production Date Range: From 09-01-1982
          1982BMW528eBase (2.7 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1985BMW535iBase (3.5 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1985BMW635CSiBase (3.5 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1985BMW524tdBase (2.4 L6 DIESEL)Notes: Ball Joint Faces Down with Bushing
          1985BMW528eBase (2.7 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1983BMW528eBase (2.7 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1983BMW633CSiBase (3.2 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1983BMW533iBase (3.2 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1986BMW535iBase (3.5 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1986BMW635CSiBase (3.5 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1986BMW528eBase (2.7 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1986BMW524tdBase (2.4 L6 DIESEL)Notes: Ball Joint Faces Down with Bushing
          1989BMW635CSiBase (3.5 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1984BMW528eBase (2.7 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1984BMW533iBase (3.2 L6 GAS)Notes: Ball Joint Faces Down with Bushing
          1984BMW633CSiBase (3.2 L6 GAS)Notes: Ball Joint Faces Down with Bushing
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          Warranty Overview

          At Newparts, we stand behind the quality of the products we sell. Every part we offer is backed by a warranty designed to give you peace of mind and protect your investment.

          Standard Warranty – Most Parts

          • Coverage: 2 years or 24,000 miles (whichever comes first) from purchase date.

          • Protection: Defects in materials or workmanship under normal personal use.

          • Eligibility: Applies only to the original purchaser and the vehicle where the part was first installed.

          • Exclusions:

            • Wear-and-tear items (brake pads, filters, bulbs, wipers, etc.)

            • Commercial, fleet, rideshare, off-road, or racing use

            • Improper installation, misuse, accidents, or modifications

          • Not Covered: Labor, shipping, towing, or incidental costs.

          Bison Performance Warranty – Our House Brand

          • Coverage: Limited Lifetime Warranty for as long as you own your vehicle.

          • Applies To: All products sold under the Bison Performance label.

          • Premium Protection: Goes beyond our standard warranty — if it’s a Bison product, the 2-year/24k mile limit is replaced with lifetime coverage.

          • Exclusions: Same as the standard warranty (normal wear, commercial use, improper installation, etc.).

          • What’s Included: Replacement of the defective product (labor and shipping excluded).

          Warranty Claim Requirements

          To keep claims fast and fair, we require:

          • Proof of purchase (invoice or order confirmation).

          • Photos or videos showing the defective part, order number, date, VIN, and odometer reading.

          • Diagnostic reports or part returns for non-visible issues may be requested.

          • Claims must be truthful, properly documented, and reflect normal consumer use.

          Buy With Confidence: We back our products because we believe in their quality, with a transparent, customer-first warranty process you can trust. And with Bison Performance products, you’ll enjoy Limited Lifetime protection—an assurance few brands can match.

          For full details and exclusions, please see our complete Warranty Terms & Conditions.


          This summary is for convenience only. For full warranty coverage details, exclusions, and requirements, see our official Warranty Terms & Conditions. In case of conflict, the full policy governs.

          Return Policy Overview

          Most parts can be returned within 30 days of delivery if unused, uninstalled, and in original packaging.
          To start a return, use our Return Portal or contact support.

          • Restocking fee: Up to 20% may apply for certain orders (buyer’s remorse, order errors, or special-order items)

          • Refunds: Issued to your original payment method within 3–5 business days after inspection

          • Exchanges: Not automatic — please return and reorder

          • Replacements: May be approved for incorrect or defective items reported within 7 days

          Not returnable:

          • Used or installed parts

          • Electrical components

          • Opened filter kits, gaskets, or contaminated items

          • Final sale or custom orders

          Important Notes:

          • Return shipping is your responsibility unless we made a verified error

          • Fitment is the customer’s responsibility (we can assist, but do not guarantee)

          • Country of origin may vary and is not grounds for return

          For complete details, please see our full Return Policy.



          This Returns summary is provided for convenience only. All returns, refunds, and exchanges are subject to the complete Returns Policy. In the event of any conflict, the full policy governs.

          Fast, Reliable Shipping — Straight to Your Door

          We ship most orders the same day when placed before 2 PM CST (Monday–Friday). Our main warehouse is just east of Nashville, TN, and we also ship from multiple locations nationwide to get your order to you as quickly as possible.

          • We use trusted carriers like UPS, FedEx, and USPS.

          • Tracking info is emailed to you as soon as your order ships.

          • Delivery estimates at checkout are based on carrier data, but not guaranteed.

          Need help with a shipment?

          If your order is missing, damaged, or incorrect, just let us know within 5 days of delivery. We’ll walk you through the quick claim process — including a few photos to help us make things right.

          For full details, please see our complete Shipping Policy.


          This Shipping summary is provided for convenience only. Delivery times, carrier terms, fees, restrictions,  risk of loss, and other details are governed by our complete Shipping Policy. In the event of any conflict, the full policy governs.

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