01-16 6.6L Duramax Wagler Billet Main Caps

Strengthen the bottom end in your 2001-2016 GM 6.6L Duramax with the Wagler WCPC6641 Billet Main Caps. Designed, and machined in-house at Wagler Competition Products, these Billet Main Caps increase strength and rigidity and work with or without the WCP Girdle. 

• WCP Billet Main Caps are designed and machined in house
• Does not distort when torquing down main studs
• Adds strength to the bottom end
• Can be used with or without the WCP Girdle
• For extra strength add the WCP Street Girdle
• Made in the USA
• Must be line bored

Part Number: WCPC6641