Description

PLD Big Plug 55-Pin Connector for Mercedes-Benz MP1, MP2, MP3 PLD & MR Engine Harness Systems

The PLD Big Plug 55-Pin AMP Automotive Connector is a critical electrical connector designed for Mercedes-Benz MP1, MP2, and MP3 trucks. This robust plug is used extensively across PLD and MR engine management systems, allowing for secure, high-density electrical signal transfer between the engine harness and ECU. With its rugged construction and widespread compatibility, the PLD Big Plug ensures long-term reliability even under harsh operating conditions.

Whether you are repairing an engine harness, rebuilding a damaged loom, or fabricating a new wiring system for a Mercedes-Benz truck, this 55-pin connector provides an OEM-quality solution at a competitive price. It is also widely used in Fuso and Bell trucks, making it a versatile component for workshops servicing multi-brand fleets.

PLD Big Plug 55-Pin Connector for Mercedes-Benz MP1, MP2, MP3

This connector is specifically engineered to meet the electrical demands of Mercedes-Benz PLD and MR engines. It ensures a secure interface with the ECU, preventing intermittent faults, overheating, communication errors, and corrosion issues commonly found in ageing connectors.

Applications

This connector is commonly used in:

• Mercedes-Benz MP1 / MP2 / MP3 Trucks
  Perfect for PLD and MR engine harness repairs, rebuilds, and replacements.

• Fuso Trucks
  Provides compatibility with Japanese-manufactured vehicles that use similar engine control systems.

• Bell Trucks & Construction Equipment
  Known for their rugged operating environments, Bell machines rely on this connector for stable ECU connectivity.

This makes the PLD 55-Pin Big Plug suitable for fleets, workshops, auto electricians, and rebuilders who require a dependable harness connector.

Key Features of the PLD Big Plug – 55-Pin AMP Automotive Connector

Wide Compatibility

Designed for Daimler-based PLD and MR ECUs. Ensures seamless integration with Mercedes-Benz engine harnesses and many compatible truck and construction platforms.

Durable OEM-Grade Construction

Manufactured with high-quality materials that withstand heat, vibration, diesel contamination, and continuous electrical load—ideal for long-haul and industrial vehicles.

Waterproof and Dust-Resistant

Features an engineered sealing system to prevent moisture ingress, oxidation, and contamination. Essential for reliability in harsh environments such as construction, mining, and off-road transport.

Complete Kit Included

Each connector includes:

• 55 terminals

• Full seal set

• Plug body housing
  This eliminates the need to source terminals separately, saving time during repairs.

Recommended Tool

For removing old or damaged terminals from your PLD or MR engine harness, we recommend using the Terminal Removal Tool – 2mm and 3mm. This tool ensures clean extraction without damaging the connector housing or pins.

Technical Specifications

• Pin Count: 55 pins

• Connector Type: AMP Automotive Connector

• OEM & Cross-Reference Part Numbers:

  • A0045450426C

  • DJ7552-3.5-21

  • 1718248-1

  • A4574434140

  • A0084462840

• Waterproof Rating: Yes (Sealed)

• Applications: Mercedes-Benz PLD & MR engines, Fuso, Bell

These specifications ensure compatibility with a wide range of OEM harness designs.

Why Choose Autolectronix?

• Fast shipping — We keep this connector in stock for immediate dispatch.

• Competitive pricing — Ideal for both individual repairs and bulk orders.

• Trusted by workshops nationwide — Our connectors meet OEM specifications and are used by professional repairers across South Africa.

• Technical support available — Not sure if this connector suits your engine harness? Our team can help confirm compatibility.

Order Your PLD Big Plug Today

Whether you are repairing a single truck or stocking up for workshop use, Autolectronix ensures fast delivery and reliable customer service. This 55-pin connector is the preferred choice for restoring electrical integrity in Mercedes-Benz engine management systems.

Bundle Option – Save When Purchasing Both Connectors

For customers rebuilding or repairing the complete PLD/MR engine harness, we offer a bundle option that includes:

• PLD Big Plug – 55-Pin AMP Automotive Connector

• PLD Small Plug – 16-Pin AMP Automotive Connector (A0001530022)

Buying both together ensures plug-and-play compatibility and guarantees you receive matching terminals and seals for all wire sizes. This is ideal for workshops doing full loom rebuilds on Mercedes-Benz MP1, MP2, and MP3 engines.

Contact us if you would like this bundle added to your order.