Precision-machined from durable 6061 Billet Aluminum, this cap not only enhances the visual appeal of your engine bay but also ensures lasting performance. We provide a new o ring to achieve the perfect seal on your trucks oil fill neck and trouble free installation. Engineered to complement other HSP products, this cap can also be coated in any of our standard or custom powder coat options.

What comes with the HSP Oil Fill Cap for 2001-2010 Chevrolet/GMC Duramax factory oil fill necks?

• (1)HSP Oil Fill Cap-Raw
• (1)O-ring seal

What Does The HSP Oil Fill Cap for 2001-2010 Chevrolet/GMC Duramax with the factory Oil Fill Neck fit?

• 2001-2010 GMC Sierra 2500
• 2001-2010 GMC Sierra 3500
• 2001-2010 Chevrolet Silverado 2500
• 2001-2010 Chevrolet Silverado 3500
• LB7: VIN Code 1
• LLY: VIN Code 2
• LBZ: VIN Code D
• LMM: VIN Code 6

Special Note:

• This cap only fits factory oil fill necks on 2001-2010 Duramax engines. This does not fit trucks with aftermarket oil fill necks. Trucks equipped with an aftermarket fill neck please use part number HSP-042-HSP.

HSP No BS Limited Lifetime Warranty
At HSP we believe in our products and we stand firmly behind every single one that leaves our facility. For years we have taken care of almost everything and anything that our customers had issues with, but we didnt have a set in stone warranty. We have always gone above and beyond for our customers which set us apart from the rest. We will continue that same standard, but now we are taking things to the next level.