Mag-Hytec 14-11.5 Differential Cover for 2001-2010 GM Duramax Trucks
| Item Number | MAG-GM-AA14-11.5 |
| Price | $270.75 |

Full Floating Axle for 2001 to present GM Duramax HD 2500 & 3500 Diesel Trucks.
This cover is the correct cover for your 14 bolt-11.5 differential, even though there are only 12 holes. The top and bottom bolts have been removed for drain plug and temperature sending unit hole. Capacity 8 quarts.
Mag-Hytec’s heavy duty differential covers and transmission pans provide increased lubricant and cooling capacity for hard working diesel trucks like yours. Mag-Hytec covers and pans set your vehicle apart in both aesthetics and function – cast in A356-T6 aluminum and texture powder coated black with machined cooling fins.


Magnetic drain plugs trap worn gear material promoting fluid integrity. As the metallic components in transmissions and axles wear, they generate very fine particle debris that becomes suspended in the lubricating oil. A suspended magnet acts as a filter to contain these particles, keeping the fluid cleaner and extending component life. Periodic checking and cleaning of the magnet is recommended for maximum fluid service life.
Each unit is fitted with ARP 568 O-rings for superior sealing. All hardware is 303 stainless steel, and in most applications no gasket or sealant is required. All Mag-Hytec parts are covered by a lifetime limited warranty. Depend on MAG-HYTEC when you’re pulling a heavy load.

Key Differential Cover Features
- Magnetic drain plug and anodized aluminum dipstick with magnetic insert
- O-rings require no gaskets or sealant
- Routine lube maintenance without removing the differential cover
- 1/8 NPT temperature sender port
- 303 stainless steel hardware
- Lube level reference plug
- Finned aircraft aluminum housing
- Requires allen key wrenches (included) for installation and service
- Fits with most factory suspension systems and aftermarket anti-sway bars
MAG-HYTEC Differential Cover MAGAA14-11.5 will fit:
- 2001 to Present – GMC / Chevrolet HD 2500 & 3500 6.6L Duramax & 8.1L Gas

Based out of Van Nuys, California, Mag-Hytec is recognized as the industry leader in heavy duty differential covers and transmission pans.
Heavy duty differential covers and transmission pans provide increased lubricant and cooling capacity for hard working recreational and service vehicles.
Mag-Hytec covers and pans are cast in A356-T6 aluminum and texture powder coated black with machined cooling fins. Magnetic drain plugs trap worn gear material promoting fluid integrity. Each unit is fitted with ARP 568 O-rings for superior sealing. All hardware is 303 stainless steel, in most applications no gasket or sealant is required.
Mag-Hytec is synonymous with high quality differential covers and transmission pans, so you can depend on Mag-Hytec when you’re pulling a heavy load.
Links
- Manufacturer Product Web Page
- Product Installation Manual
- Manufacturer Product Support
- Manufacturer Warranty
Manufacturer Contact Info:
818-786-8325
MAG-HYTEC
14718 Arminta Street
Van Nuys, CA 91402




