OBD2 3-Pin to 16-Pin Diagnostic Adapter Cable – Compatible with Fiat, Lancia & Alfa Romeo

Struggling to connect your older Fiat, Lancia, or Alfa Romeo to a modern OBD2 diagnostic scanner? This 3-pin to 16-pin OBD2 adapter cable is the simple, reliable solution. It bridges the gap between your vehicle's legacy 3-pin diagnostic port and any standard 16-pin (OBDII) compatible diagnostic interface or scan tool — letting you read fault codes, check engine data, and keep your car running its best.

⚠️ Please Note: This is an adapter cable only. It is not a diagnostic tool. A compatible OBD2 diagnostic interface or scan tool is required separately.

Key Features

Universal Compatibility: Works with older Fiat, Lancia, and Alfa Romeo vehicles equipped with a 3-pin diagnostic connector.
Standard OBDII Interface: Converts the proprietary 3-pin connector to a universal 16-pin OBD2 port for use with most aftermarket scan tools and diagnostic interfaces.
CE Certified: Meets CE external testing certification standards for safety and reliability.
No Batteries Required: Completely passive adapter — plug it in and it's ready to go.
Durable Construction: Sturdy connector housing and quality wiring ensure a secure, stable connection every time.
Compact & Portable: Lightweight design makes it easy to keep in your glove box or tool kit.

Specifications

Connector A: 3-Pin OBD Plug (vehicle side)
Connector B: 16-Pin OBD2 / OBDII Plug (diagnostic tool side)
Compatible Vehicles: Fiat, Lancia, Alfa Romeo (older models with 3-pin diagnostic port)
Certification: CE
Wireless Support: No
Country of Origin: Made in Mainland China

What's in the Box

1 × 3-Pin to 16-Pin OBD2 Diagnostic Adapter Cable

Why You Need This Adapter

Many classic and older Italian vehicles — including Fiat, Lancia, and Alfa Romeo models — use a non-standard 3-pin diagnostic port instead of the modern 16-pin OBD2 interface. Without this adapter, you simply cannot plug in a standard scan tool. This cable solves that problem instantly, saving you time and money on dealership diagnostic fees.

For more information on on-board diagnostics and vehicle health monitoring, visit the U.S. EPA's On-Board Diagnostics (OBD) resource page.

Frequently Asked Questions

Q: Which Fiat, Lancia, and Alfa Romeo models is this OBD2 3-pin adapter cable compatible with?

A: This adapter is designed for older Fiat, Lancia, and Alfa Romeo vehicles that use a proprietary 3-pin diagnostic connector instead of the standard 16-pin OBD2 port. This typically includes pre-OBD2 era models manufactured before the late 1990s/early 2000s. If your vehicle has a 3-pin diagnostic port, this cable should allow you to connect a standard 16-pin OBD2 scan tool or diagnostic interface.

Q: Does this cable work as a standalone diagnostic tool?

A: No — this is purely a passive adapter cable. You will still need a compatible 16-pin OBD2 diagnostic scanner or interface (sold separately). This cable simply converts your vehicle's 3-pin port to the standard 16-pin OBD2 format so your scan tool can connect properly.

Q: Is this OBD2 adapter cable safe to use in my vehicle?

A: Yes. This adapter cable holds CE certification, confirming it meets European safety and quality standards. It contains no hazardous chemicals and requires no batteries or external power — just plug it in between your vehicle's 3-pin port and your OBD2 scan tool.

Q: What is included in the package?

A: The package includes 1 × 3-Pin to 16-Pin OBD2 diagnostic adapter cable. No diagnostic software or scan tool is included.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

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