Cometic Timing Cover Seal 01-18 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML/L5P

Made-to-order and designed for performance engines, Cometic gaskets are the perfect fit for the job. Using Cometic helps prevent leaks and broken seals that can cause massive damage to your crankshaft or other parts of your Duramax engine.