YLCNC 5-1718323-1 39 PIN Engine Plug DJ7391E-2.8-104

Automotive connectors are core connection components of the vehicle electrical system, widely used in fuel vehicles, new energy vehicles, construction machinery, motorcycles, agricultural machinery and modified equipment. This 39 PIN auto connector belongs to the LEAVYSEAL SERIES, a universal aftermarket replacement wiring component specially designed for engine plugs, DCU urea pump computer board plugs and ECU harness plugs. Equipped with independent single-wire seals for every cavity, it adopts 2.8-series heavy-duty terminals, supporting stable transmission of engine control signals and medium-high power current. It is widely applied to ECU, DCU urea pump and main engine wiring harness connections for various commercial and passenger vehicles. Manufactured with high-performance PBT housing material, it delivers excellent heat resistance, chemical resistance and anti-vibration performance to adapt to severe high-temperature and oil-stained engine compartment environments. The distinctive green housing is different from conventional black wiring harness connectors, enabling rapid sorting and effective error-proof identification during assembly line production and after-sales maintenance.

If you need samples, you can place an order through our online store link: www.ylcnc-auto.com

Specifications

Company Strengths

• 18 Years Specialized Automotive Connector Production Experience

• 11,000 ㎡ Standardized Production Workshop

• More Than 270 Professional Production & Testing Staff

• Over 15,000 Automotive Connector & Harness Product Models

• Full IATF16949 Automotive Quality System Certified

• Independent Professional R&D & Precision Mold Development Team

• Full Custom Mould Development & OEM Domestic Replacement Solutions

• Strict Full Inspection System, Stable Quality & Punctual Shipment

Product Advantages

• 1. Exact OEM Replacement Fit: Matches aftermarket reference part DJ7391E‑2.8‑104 with OE number 5-1718323-1, 39‑cavity 2.8‑series terminal layout fully interchangeable with original factory LEAVYSEAL SERIES connectors for engine plug, DCU urea pump computer board plug and ECU harness plug applications.

• 2. High Toughness Modified Green PBT Housing: Reinforced green PBT plastic shell with excellent heat resistance, oil resistance, anti‑aging and anti‑vibration performance. Thickened wall construction enhances structural stability under long‑term vehicle vibration, the exclusive green housing acts as a clear identification marker for engine and urea system wiring harness connectors.

• 3. Independent Single Wire Seal Design: Each of the 39 wire terminals is equipped with individual silicone rubber seal matched to corresponding wire gauges, completely isolating water, dust and mud, effectively avoiding signal disconnection for engine, DCU urea pump and ECU plugs under harsh engine bay alternating temperature & humidity environments.

• 4. Factory Direct Supply Cost Advantage: Fully automated production lines, 100% electrical performance and waterproof tightness inspection before delivery, abundant stock and competitive bulk prices for auto wiring harness manufacturers and repair workshops.

Main Application Scenarios

• 1. Engine & DCU Urea Pump ECU Wiring Harness Connection: 39‑pin 2.8‑series green sealed connector with OE part number 5-1718323-1 for engine plug, DCU urea pump controller board plug and ECU harness plug, part of LEAVYSEAL SERIES and manufactured with PBT housing material.

• 2. Engine & Urea Injection ECU Signal & Power Transmission: Waterproof multi‑pin connector for engine control and urea pump DCU signal collection and heavy-duty powertrain wiring harness integration.

• 3. Harsh Powertrain Chassis Reliable Circuits: Stable long‑term operation under damp, high‑temperature, splashing and temperature alternating conditions around vehicle engine and urea treatment assembly.

• 4. Universal Commercial Vehicle Aftermarket Replacement Spare Parts: Standard green 39‑pin PBT sealed connector with corresponding OE number widely stocked for repair workshops and global auto parts distributors for engine and urea pump ECU electronic system maintenance.

Service Advantages

1.Customized Services: We develop products per customers’ drawings, samples and parameter requirements, and optimize product structures. Mould development and domestic alternative replacement are available.

2.Standard Services : Supply of standard products with steady production capacity and controllable lead time. Fast production and delivery for bulk regular orders.

3. Value-added Services: Professional technical support is provided. We can offer various qualification documents and test reports, with prompt after-sales response.

Video

Inspection Equipments

FAQ

Q1: How many years of production experience does your company have?
A1: We have 18 years of professional experience in automotive connectors and wiring harness manufacturing, deeply rooted in the industry and familiar with customer demands and quality standards at home and abroad.

Q2: Do you have independent R&D and design capabilities?

A2: Equipped with a professional R&D and design team, we can independently complete product development, mold design and sample testing, and targetedly solve customers' customized needs.

Q3: What are your main products?

A3: We specialize in manufacturing automotive connectors, wiring harnesses, terminals and related automotive electronic accessories, mainly focusing on matching wiring harnesses and connectors for traditional fuel vehicles.

Q4:What reflects the cost-effectiveness of your products?

A4:As a direct source factory, we strictly control production costs, balance high quality and reasonable pricing, providing customers with cost-effective automotive wiring harnesses and connectors.