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2001-2016 Duramax 6.6L Billet Main Caps (C6641)

SKU C6641
Original price $1,035.00 CAD - Original price $1,035.00 CAD
Original price
$1,035.00 CAD
$1,035.00 CAD - $1,035.00 CAD
Current price $1,035.00 CAD
  • Overview
  • Features
  • Fits

Machined in-house at Wagler Competition Products, these Billet Main Caps increase bottom-end strength, rigidity & can be used 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

GM Duramax

2001 - 2016


Most orders are shipped 1-2 weekdays after an order is placed, depending on availability. Some products are shipped directly from manufacturers.


Not all products are stocked in house. Please check for availability as some products may be backordered.

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