Fits: 2001-2007 & 2011-2019 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7 LLY LBZ LML L5P Duramax Diesel

Max-Flow's Oil Cooler Upgrade kit for your 2001+ LB7, LLY, LBZ, LML & L5P Duramax Diesel includes an oversized oil cooler that has improved fluid dynamics to take full advantage of the cooling plates within the oil cooler. If you are concerned with oil temps or they are getting hotter then you will benefit from this bolt on replacement oil cooler for your Duramax Diesel. When testing this oil cooler kit, we have seen a 10-15 degree decrease in oil temperatures during daily driving and unloaded. We also tested this with a trailer attached and going up a fairly steep grade we saw a 25 degree drop in peak oil temperatures after installing this Max-Flow Oil Cooler Upgrade kit.

Features:

• Improved internal fluid dynamics for better heat reduction
• Increased cooling capacity
• We have seen a 10-25 degree cooler oil temps during daily driving and towing use
• Bolt on replacement 
• 35%-89% more surface area on the cooling stack

Includes:

• Engine Oil Cooler
• Engine Oil Cooler Gasket
• Engine Oil Cooler Adapter
• Water Pump Outlet Pipe Gasket
• Engine Oil Cooler Adapter Gaskets
• Oil Cooler Inlet Pipe O-ring
• Hardware Kit
• Oil Temperature Sensor Adapter
• Engine Oil Filter, select from options

Optional:

• If you have aftermarket manifolds without the heat shield boss you do not need to remove the manifold.
• Manifold gasket and up pipe gasket (if you are modifying your factory manifold)
• Pre-Modified BD Exhaust Manifold with Gaskets (Modified for clearance of larger oil cooler)
  

DmaxStore Notes: 

• Utilizes 2020+ L5P oil filter
• Will NOT work on 2007.5-2010 LMM 6.6L Duramax Diesels

Install Instructions