28329581 Fuel Injection Ignition Harness Compatible with GM Left Hand Fuel Rail 5.3L 6.2L V8, Replaces 28329581, 28388775, 12685360, 12687244 1. Compatibility & Fitment – Ensure Proper Installation Specifically designed for GM Left Hand Fuel Rail 5.3L and 6.2L V8 engines. Note: Please verify your vehicle's engine size and configuration before purchasing. 2. High-Quality Construction – Durable & Reliable Made from high-quality raw materials, ensuring stable performance and long service life. Meets or exceeds OEM standards, providing a perfect match for your vehicle's original parts. 3. Easy Installation – Plug & Play Design Designed for direct replacement of the original harness, requiring no modifications or additional tools. Simple and quick installation process, saving you time and effort. 4. Enhanced Performance – Stable & Efficient Ensures reliable fuel injection and ignition performance, improving engine efficiency and overall vehicle performance. Fully tested before leaving the factory to ensure premium quality and consistent operation. 5. Customer Support & Satisfaction Backed by a 1-year warranty for your peace of mind. If you have any questions, feel free to contact us – our customer support team is available 24/7 to assist you.