2011-2016 Duramax 6.6L LML Combo Kit - WITHOUT UP-PIPE!

We keep these in stock and ready to ship at all times!
 
With this combo kit you can clean up the engine bay on your 2011-2016 Duramax LML which consists of the highest quality parts to ensure you have a reliable truck for many years down the road! It's usually added when doing head gaskets or a CP3 conversion and most of the parts are removed from the top of the engine.
 
It includes everything needed to install minus the up pipe which some customers already have, or plan to cap their factory up pipe. If you need the complete kit WITH up pipe, that can be found HERE
 
Included components:
John C Garage Coolant bypass kit
Stainless Steel Y-bridge Plate with stainless hardware (bolts and lock washers)
OEM AC Delco Y-bridge Gaskets
 
Optional in the drop down menu:
Full 3" Stainless Steel down pipe -  from WCFAB
 
Unsure which down pipe to get? Here's a general reference guide but you have to physically look on any 2015.
 
11-14 vband
2015 can be either
2016 3 bolt
 
For the 2015 Duramax LML, you will need look through the passenger wheel well at the connection where the down pipe meets the exhaust to tell which down pipe you have and will need.
 
2011 - early 2015 will be a vband clamp holding them together. This is the "vband" option.
2015.5-2016 will have 3 bolts holding a ring up against the exhaust. You will see 3 nuts. This is a "3 bolt" option.
 
Related items or often purchased together:
Duramax LML cross over pipe found HERE
Duramax LML ventilation kit found HERE
Duramax LML 9th Injector bundle found HERE
Duramax LML down pipe plugs found HERE
Fleece Performance coolant plate found HERE
WCFAB resonator plate found HERE