---
product_id: 609200462
title: "4in to 8in PNP Conversion Harness, Black HC3Z 19A387 B for SYNC 1 to SYNC 3 Upgrade"
brand: "leftwei"
price: "$85.90"
currency: USD
in_stock: true
reviews_count: 6
category: "Leftwei"
url: https://www.desertcart.us/products/609200462-4in-to-8in-pnp-conversion-harness-black-hc3z-19a387-b
store_origin: US
region: United States of America
---

# 4in to 8in Screen Upgrade Plug & Play Power Harness Seamless SYNC 1 to SYNC 3 Conversion 4in to 8in PNP Conversion Harness, Black HC3Z 19A387 B for SYNC 1 to SYNC 3 Upgrade

**Brand:** leftwei
**Price:** $85.90
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your drive with seamless SYNC 3 power!

## Quick Answers

- **What is this?** 4in to 8in PNP Conversion Harness, Black HC3Z 19A387 B for SYNC 1 to SYNC 3 Upgrade by leftwei
- **How much does it cost?** $85.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/609200462-4in-to-8in-pnp-conversion-harness-black-hc3z-19a387-b)

## Best For

- leftwei enthusiasts

## Why This Product

- Trusted leftwei brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **OEM Quality Assurance:** Built to OE standards with part number HC3Z 19A387 B for guaranteed compatibility.
- • **Effortless Plug & Play:** No cutting or splicing—just direct replacement for a flawless install.
- • **Future-Proof Your Ride:** Unlock advanced SYNC 3 features and elevate your in-car experience instantly.
- • **Upgrade Your Dashboard:** Transforms your 4-inch SYNC 1 display to a sleek 8-inch SYNC 3 interface.
- • **Perfect Fit for Auto Climate Control:** Designed exclusively for vehicles with original automatic climate control.

## Overview

This Leftwei 4in to 8in PNP Conversion Harness (HC3Z 19A387 B) enables a direct, plug-and-play upgrade from SYNC 1 to SYNC 3 systems in compatible vehicles with automatic climate control, delivering a larger touchscreen experience without any wiring modifications.

## Description

Buy Leftwei 4in to 8in PNP Conversion Harness, Black HC3Z 19A387 B for SYNC 1 to SYNC 3 Upgrade: Wiring Harnesses - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: No need to buy an expensive harness. Perfect for DIY - This harness worked perfect. Instead of buying those expensive kits to go from the 4 to the 8 inch screen this harness did everything I needed to do.
Review: Excelente artículo a muy buen precio

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BDP4Q735 |
| Best Sellers Rank | #291,004 in Automotive ( See Top 100 in Automotive ) #1,437 in Automotive Replacement Electrical Wiring Harnesses |
| Brand Name | Leftwei |
| Cable Type | Proprietary |
| Connector Type | Pnp |
| Customer Reviews | 4.1 4.1 out of 5 stars (16) |
| Item Weight | 0.2 Kilograms |
| Manufacturer | Leftwei |
| Material Type | ABS+Metal |
| Model | Leftwei5w4i9gae6b |
| Part Number | Leftwei5w4i9gae6b |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Leftwei
- **Connector Type:** Pnp
- **Item Weight:** 0.2 Kilograms
- **Manufacturer:** Leftwei
- **Material:** ABS+Metal

## Images

![4in to 8in PNP Conversion Harness, Black HC3Z 19A387 B for SYNC 1 to SYNC 3 Upgrade - Image 1](https://m.media-amazon.com/images/I/61u8GUjf-kL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ No need to buy an expensive harness. Perfect for DIY
*by J***H on September 19, 2025*

This harness worked perfect. Instead of buying those expensive kits to go from the 4 to the 8 inch screen this harness did everything I needed to do.

### ⭐⭐⭐⭐⭐ Review
*by T***O on May 28, 2025*

Excelente artículo a muy buen precio

### ⭐⭐⭐⭐⭐ Use on ford taurus
*by S***V on March 23, 2025*

Working as it should!

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.us/products/609200462-4in-to-8in-pnp-conversion-harness-black-hc3z-19a387-b](https://www.desertcart.us/products/609200462-4in-to-8in-pnp-conversion-harness-black-hc3z-19a387-b)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-04-26*