• Control Arm For BMW 3112 6776 417
  • Control Arm For BMW 3112 6776 417
  • Control Arm For BMW 3112 6776 417
  • Control Arm For BMW 3112 6776 417
  • Control Arm For BMW 3112 6776 417
  • video

Control Arm For BMW 3112 6776 417

  • Sortech
  • China
  • 7-30days
  • There is some inventory, and the production capacity is 7~30 days after ordering
1.A 30% reduction in weight and a 50% increase in strength are achieved in our auto suspension front control arm through the use of forged aluminum alloy and advanced technology. 2.Driving comfort and steering directivity are enhanced by means of precision steering design and shock absorption cushioning. 3.The bushing and ball head of this control arm are made from either graphene‑reinforced material or chromium‑molybdenum alloy, with a rated service life of more than 80,000 kilometers.

1. Control Arm Body

The arm body is formed from forged aluminum alloy using a die forging process. It is 40%–50% lighter than steel arms while still offering high rigidity, which lowers unsprung mass and leads to sharper handling and a smoother ride.

Control Arm For BMW

2. Ball Joint Assembly


Ball Stud: The ball stud comes from bearing steel. Its surface goes through carburizing, quenching, and grinding to achieve high hardness and wear resistance, allowing for accurate and smooth steering.


Socket: The socket is made of POM rubber and contains lithium grease inside. This setup reduces friction and stops rubbing noise between the ball stud and the socket.


Dust Boot: The dust boot is made of chloroprene rubber, which resists oil and aging. It seals out sand, moisture, and other contaminants that could cause wear inside the ball joint.


Preload Spring: The preload spring is made of spring steel and applies a constant preloading force to the assembly.

Lower control arm

3. Bushing Assembly


Inner Sleeve: The inner sleeve is made of 45# steel with a zinc or electrophoretic coating for rust protection. It bolts directly to the subframe or knuckle for a rigid connection.


Rubber Element: The rubber element is made of natural rubber and acts as a hydraulic bushing with built-in oil chambers. It has high elasticity and good fatigue resistance, soaking up road vibrations and filtering out noise. The hydraulic design also uses oil flow to reduce high-frequency vibrations, enhancing ride comfort.


Outer Shell: The outer shell is made of aluminum alloy. It attaches to the control arm body through an interference fit or welding, ensuring a strong bond between the bushing and the arm.

Auto control arm

Q1:Do Your Products Meet International Standards (Such as Iso/Ts 16949)?

A: Our products have passed ISO/TS 16949 quality management system certification, and meet the European CE, Russian GOST and other regional standards. Specific certification can be provided according to customer needs.

Q2: Can You Provide Product Drawings or Technical Parameters?

A: Yes! Please provide your requirements or refer to our product catalogue on the website. We will send you detailed technical documents (including size, material, vehicle type, etc.).

Q3: Is There Any Products in Stock? Can I Deliver It on the Same Day?

A: The regular model is available in stock, and the delivery cycle is 3-5 working days; the production cycle of customized products needs to be confirmed according to the order.

Q4: Which Models Are Suitable for This Accessory?

A: Please provide the brand, model and year of the vehicle (such as BMW 2020), we will match the corresponding accessories.

Q5: How to Confirm the Compatibility of Accessories with the Original Car?

A: We provide OEM number comparison service or verify compatibility through third-party tools.

Q6: Does the Quotation Include Freight? Is It Fob Price?

A: The default quotation is the factory price (excluding tax). If you need FOB price, you need to specify the freight forwarder and bear the international freight, we will cooperate with you.

Q7: Is There a Bulk Discount?

A: The larger the order volume, the higher the discount. For example: -MOQ 100 pieces: unit price $10. -MOQ 500 pieces: unit price $8. Specific step prices can be negotiated after the procurement plan is provided.

Q8: Is the Price Tax Included?

A: The quotation is not included in tax (tax number of customer is required for export tax exemption in China). If DDP (tax paid delivery) is required, additional tax confirmation is required.

Q9: How to Place an Order?

A: You can send the purchase list by email or submit the order online (official website link), we will confirm within 24 hours.

Q10: Time Limit for Order Modification or Cancellation?

A: The modification can be made free of charge before production; the cancellation during production will incur the material loss fee (30% of the order amount); the cancellation after delivery is not allowed.

Q11: Who Will Bear the Freight?

A: The freight shall be borne by your company under FOB price; the cost to the destination port/denominated place shall be borne by us under CIF/DAP price.

Q12: What Documents Are Required for Customs Clearance?

A: To be provided: -Commercial invoice (including HS code). -Packing list. -Certificate of origin (FORM A). -Technical documents (e.g. product certification certificates). We can assist in preparing the documents, but the customer is responsible for customs clearance.

Q13: How to Lock in the Exchange Rate?

A: It can be agreed to take the spot selling price of the Bank of China at the time of signing the contract as the benchmark, or avoid the risk of volatility through forward exchange contracts.

Q14: What Is the Warranty Period of Your Products?

A: 2 years and 60,000 kilometers, electronic components 1 year warranty.

Q15: How to Deal with Product Quality Problems?

A: Please provide photos, test report and batch number to confirm the quality problem: -Free replacement or repair within the warranty period (24 months); -Negotiate partial compensation for non-quality issues.

Q16: How to Apply for Return or Exchange?

A: The return freight shall be borne (except for quality problems), and the return shall be confirmed by our quality inspection.

Q17: Is Installation Guidance Provided?

A: Provide multi-language installation video and graphic manual, complex accessories can arrange engineers for remote guidance.

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