2001–2026 Silverado/Sierra 2500HD & 3500HD LB7/LLY/LBZ/LMM/LML/L5P. - Direct-fit for all 6.6L Duramax diesel trucks. This premium locking fuel cap threads directly into the factory filler neck and is precision-machined from 6061-T6 billet aluminum for maximum durability and long service life.
