Fits: 2001 thru 2025 Chevrolet Silverado/GMC Sierra 2500HD/3500HD LB7/LLY/LBZ/LMM/LML/L5P Duramax Diesel 

This fuel cap was designed specifically to fit the 6.6L Duramax Diesel Trucks and threads right into the factory filler neck. It is constructed of T6 6061 Aluminum and is anodized in green for corrosion resistance and to give you that extra reminder to fill up with Diesel fuel. This cap is perfect for Duramax owners that want to keep their diesel in their tanks, while also looking good. Deter thieves and keep your fuel clean with this locking fuel cap. We designed this with flatbed and service bed owners in mind, when your fuel cap is out in the open 24/7 and shining in the sun, it may attract some extra attention, now you won't have to worry about anybody stealing your fuel cap with this secure locking design!

Features:

• Direct fitment 6.6L Duramax Diesel Trucks
• Billet 6061 Aluminum
• Secure Locking Design
• 2 Uniquely keyed keys
• Anodized Green Finish

Includes:

• 1x Fuel Cap
• 2x Keys

Notes:

• Optional second cap will be keyed the same