Banks Rear Differential Cover

Banks Ram-Air® Differential Cover
Installation and Owners Manual

2001-2019 Chevy/GMC/Dodge/Ram with AAM 11.5" and 11.8" 14 Bolt Rear Axle

Part #s 19249, 19259, 19269

Please read through the following instructions thoroughly before starting your installation. If you have any questions please visit our Support Page.

Tools required:
  • A power or manual driver
  • Oil pan
  • 3/8" Socket wrench and short extension
  • Torque wrench
  • 10mm socket
  • 13mm socket
  • 14mm socket
  • Flathead screwdriver
  • Cleaning rags

  • Additional tools required for service:
  • 12mm socket - drain plug
  • 5mm hex key - sensor port plug


  • General Installation Practices

    1. Before starting work, familiarize yourself with the installation procedure by reading all of the instructions.

    2. Disconnect the negative (ground) cable from the battery (or batteries, if there are two) before beginning work.

    3. When raising the vehicle, support it on properly weight-rated safety stands, ramps, or a commercial hoist. Follow the manufacturer’s safety precautions. Take care to balance the vehicle to prevent it from slipping or falling. When using ramps, be sure the front wheels are centered squarely on the topsides; put the transmission in park; set the hand brake; and place blocks behind the rear wheels.

    ⚠️ CAUTION! ⚠️

    Do not use floor jacks to support the vehicle while working under it. Do not raise the vehicle onto concrete blocks, masonry, or any other item not intended specifically for this use.

    4. During installation, keep the work area clean. Do not allow anything to
    be dropped into the rear differential while performing the installation, as foreign objects will cause immediate damage upon start-up.


    General Assembly

    Figure 1
    Figure 2

    Note: RAM trucks equipped with a rear sway bar require the installation of a *spacer kit (PN19249-2) to provide proper clearance between the sway bar and the differential cover.

    Figure 3

    Rear Differential Cover Installation

    1. RAM trucks equipped with a rear sway bar require the installation of a sway bar spacer kit (Part #: 19249-2) before continuing. This will provide proper clearance between the sway bar and the differential cover. Use the longer bolts included with the spacer kit to replace the stock sway bar mounting bolts. (See Figure 3)
    2. Position an oil pan under the differential cover to catch fluids drained during installation.
    3. If the differential has a drain plug, remove the drain plug using a 3/8″ square drive and allow the fluid to fully drain from inside the axle housing. If no drain plug is equipped, proceed to the next step.
    4. Using a flat-head screwdriver to assist in loosening the push-on retaining ring, remove the P-clamp underneath. Next, remove the bolts sealing the cover and brake line bracket using a 13mm socket, and remove the stock differential cover. (See Figure 4)

    Note: If the vehicle has no drain plug, open the cover partially from the bottom and allow fluid to drain before removing the cover.

    Figure 4
    1. Clean and inspect the axle housing sealing surface. It should be flat and free of all debris, rust, residue, and sealant to ensure a proper O-ring sealing. (See Figure 5)
    Figure 5
    1. Apply a thin coat of differential fluid on the O-ring. Install the O-ring in the Banks differential cover. Be careful not to damage the O-ring. (See Figure 6)
    Figure 6
    1. Install the Banks cover and re-attach brackets to the cover using the included M8 bolts. Apply a small amount of thread locker on the bolts. Torque the bolts to 12 lb/ft (29 N.m) using a 10mm 12 pt socket.
    1. Fill the differential housing with four quarts of the manufacturer’s specified lubricant using a funnel or a fluid dispenser. The fluid level should be at the center of the sight glass when the vehicle is parked on level ground. (See Figure 7)

    Note: The fluid level may not appear in the center of the sight glass if the vehicle is parked on a hill, the chassis is raised by a jack or lift, or the suspension has been modified.

    Figure 7
    1. Clean up any spilled oil and check for any leaks around the cover, fill/drain plugs, and sight glass.