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Auto connector

Home >  Products >  Auto connector

3-3Y-2.5-21 4 Pin Waterproof Circular Sealed Female Auto Connector for Heavy Duty Truck Sensor Lighting Harness

Number of Positions: 4 Positions (Circular layout)
Terminal Size: 2.2 mm (Circular/Bullet contact)
Maximum Current: 12A Max
Rated Voltage: 12V / 24V DC
Ingress Protection: IP67 / IP68
Material & Color: PA66+GF / Black, with anti-rotation ribbed body
Operating Temperature: -40°C to +125°C
Certificates: ISO9001, CE

  • Product Description
  • COMPANY OVERVIEW
  • SERIES
  • FAQ

Product Description

Number of Positions 4 (Circular layout)
Terminal Size 2.2 mm (Circular/Bullet contact)
Maximum Current 12A Max
Rated Voltage 12V / 24V DC
Ingress Protection IP67 / IP68
Material & Color PA66+GF / Black, with anti-rotation ribbed body
Operating Temperature -40°C to +125°C
Certifications ISO9001, CE
Target Market Germany, Poland, USA, Russia, Turkey
Target Audience Heavy-duty truck/trailer wiring harness manufacturers, agricultural and construction machinery electrical repair providers, vehicle exterior lighting system integrators
Applicable Models (Cars/Machinery) Widely used in Mercedes-Benz, MAN, Scania and other heavy trucks, as well as tractors and excavators, for sensors and exterior lighting circuits
Key Features Circular sealed structure provides all-direction waterproof and dustproof protection; External anti-rotation ribbing ensures secure, non-rotating connection; IP68 extreme sealing adapts to high-vibration harsh environments
Product Description DIN 72585 4-pin circular sealed female socket connector with anti-rotation ribbed housing. Designed for reliable all-weather electrical connections in heavy-duty vehicle sensor and exterior lighting systems.

COMPANY OVERVIEW

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SERIES

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FAQ

Q1: What is your delivery time?

A1: Our delivery time varies by product. For items in stock, we can ship them out quickly. For products not in stock, production usually takes about one week. The final delivery date will then depend on the destination country and the shipping method you choose. Feel free to contact us for more specific information based on your order.


Q2: Are samples available?

A2: Yes, we offer free samples. You would only need to cover the shipping cost. Normally, we provide 1 to 3 pieces per product type, and free samples are available for up to 5 different types. If the samples are in stock, we can send them out at no extra charge beyond freight.


Q3: Could you produce according to customers' design?

A3: Yes, we support customization based on your design. This includes connector housing colors, wiring harnesses, logos, and packaging boxes. We're happy to discuss the specific details with you at any time—just let us know your requirements.


Q4: Who are we?

A4: We are Rui'an Ruihong Trading Co., Ltd. Established in 2018, we are a comprehensive trading company headquartered in Tangxia Town, Ruian, Wenzhou, Zhejiang—the heart of China's automobile and motorcycle industry. We specialize in the sales of auto parts, motorcycle components, automotive connectors, copper terminals, wiring harnesses, and related materials. In addition, we offer a wide range of import and export services to support global business partnerships.


Q5: Are you a factory?

A5: Yes, we are a factory, and we also handle export trading directly. Our manufacturing facility covers 8,000 square meters, and we work with partnered wire harness and plug/seal manufacturers to ensure complete production support. Our factory produces 100,000 connectors per day on average, and we maintain regular stock for our popular products to ensure fast delivery.


Q6: How can we guarantee quality?

A6: We have a strict quality control process in place. We always provide a pre-production sample for your approval before mass production begins. Additionally, we conduct a final inspection on every shipment before dispatch to ensure that all products meet your specifications and quality standards.


Q7: Why should you buy from us instead of other suppliers?

A7: We are deeply engaged in the auto parts, motorcycle spare parts, automotive connector copper terminals, and wiring harnesses industry. With 17 years of experience in R&D and pilot production, we have built a solid reputation and deep expertise in the field. Our combination of manufacturing capability, quality control, and customer-focused service makes us a trusted partner for clients worldwide.


Q8: What services can we provide?

A8: We offer comprehensive and flexible services to meet your needs:

  • Accepted Delivery Terms: FOB, CFR, CIF, EXW, FCA, DDP, and Express Delivery

  • Accepted Payment Currencies: USD, EUR, CNY

  • Accepted Payment Methods: T/T, Credit Card, PayPal, Western Union, and Cash

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