Keep your 2017-2023 Chevy or GMC heavy-duty truck running at its best with our premium replacement Diesel Glow Plugs. Designed as a direct, drop-in fit for the L5P and L5D 6.6L Duramax engines, these glow plugs are essential for dependable cold-weather starting and maintaining optimal engine performance year-round.

Key Features:
Guaranteed Compatibility: A precise OEM replacement for part numbers: 12690238, 12725202, 12679959, GP124, 21135, 12666880.
Superior Construction: Combines a high-quality copper core for fast heat conduction with a durable ceramic heating element, all within a rugged shell designed to withstand high pressures and temperatures.
Performance You Can Count On: Experience quicker ignition, more stable idling in cold conditions, reduced emission smoke during startup, and decreased load on your starter and battery.
Complete Service Pack: This listing includes 2 glow plugs, allowing you to service your vehicle efficiently.

Application:
Fitment: 2017, 2018, 2019, 2020, 2021, 2022, 2023 Chevrolet Silverado / GMC Sierra 4500/5500 with the 6.6L L5P or L5D Duramax Diesel V8 engine.

Package Includes:
2 x Diesel Glow Plugs