L5P Duramax Glow Plug Kit 2017-2023

Overview

This is a glow plug / cold-start heating component for the Chevrolet, GMC L5P Duramax diesel (2017-2023). Built to OEM specification and engineered as a direct-fit replacement for a professional-grade L5P Duramax repair or service. Every order ships fast and is backed by our support team.

What It Does & How It Helps

Glow plugs heat the combustion chamber so a cold diesel lights off cleanly and starts without excessive cranking, smoke or misfire. As they age they draw high resistance or fail open, leaving one or more cylinders cold — the classic hard cold-start, rough cold idle and white startup smoke. A matched set of new glow plugs, with the harness, relay or controller where included, restores fast, clean cold starts and smooth cold-engine running.

What's Included

• glow plugs matched to the engine as specified
• a glow plug harness, relay or controller where applicable

Fitment

Fits Chevrolet, GMC trucks equipped with the L5P Duramax diesel engine, 2017-2023. Please confirm your engine and year before ordering to ensure correct fitment.

Common Symptoms & When to Use

Consider this L5P Duramax part when you experience:

• hard cold starting
• rough idle and white smoke on a cold start
• a glow plug or glow-plug controller fault code
• failed or high-resistance glow plugs

Specifications

• Engine: L5P Duramax
• Year Range: 2017-2023

Quality & Service

Fast shipping on in-stock orders. Free shipping on orders over $70. Backed by Core Diesel Parts — your source for L5P Duramax diesel parts.