1996-2001 Audi A4 B5 Panzer Plate Skid Plate Installation Instructions

First-time Install Procedure:
Raise car in the air: Use either ramps and wheel chocks or a jack and a pair of jack stands, or a car lift. Car must be raised on both sides for procedure to work.
Remove old belly pan:
1. Put on safety goggles. Remove old plastic belly pan if you still have one installed on your car. Save all 1/4 turn Dzus screws, if present, in provided zip-loc bag. You will not need these for the install but it's nice to have spares.
2. Remove rear mount of belly pan, if present, with a 10mm wrench (the one with three receptacles on it.). Remove all three 1/4 turn screw (Dzus) receptacles, if present, and save them as spares in provided zip-loc bag. You might want to degrease them first

Install two rivnut threaded anchors:
1. Grease the threads of two of the three provided large silver 10mm bolts. Also, grease one side of two of the provided large silver washers as shown in the following picture.
2. Insert one of the large greased bolts and washers through the hole of one of the side "wings" as shown below. The greased side of the large washer rests against the aluminum "wing".
3. Thread one of the large black rivnuts onto the greased bolt and thread it until it is snug against the aluminum "wing".
4. Locate the two 13mm hexagonal holes in your sub frame. The sub frame is the large black steel structure behind your oil pan. Thoroughly degrease/clean two inches of the area surrounding these two hexagonal holes. Brake cleaner works great for this task. Rivnut "Bulletproofing": Mounting the rivnut anchors without epoxy bonding is perfectly fine but at this point you might consider bonding the rivnut anchors to the sub frame with a two-part epoxy mixture for super-anal peace of mind (sorry if this isn't PC enough for you). The purpose of the epoxy is to keep any road salt out of the area in between the rivnut and sub frame and to further strengthen the bond between the rivnut and sub frame. To do this you begin by mixing 1/2 ounce of a two-part epoxy on a paperboard or plastic sheet. Coat the top side of the washer (shank side) of two of the rivnuts like this. Keep the epoxy away from the threads of the rivnut. Remember that the rivnuts must be installed into the sub frame within 15 minutes after the epoxy has been applied to them as the epoxy sets quickly. Also, make sure to remove any grease or dirt from sub frame before installing rivnuts. This resulting bond will last for eons!
5. Insert the projecting shank of the black rivnut/"wing" assembly into one of the hexagonal holes in the car's sub frame. Push it into the hole until the rivnut's large built-in washer contacts the sub frame. You may have to bump it in with a hammer. If you chose to use epoxy on the rivnuts, the epoxy will ooze out a little when you press (and torque) the rivnut against the sub frame. Just wipe off any excess.
6. With a 17mm box end wrench or socket, start tightening the greased 10mm bolt. As you tighten the bolt, the rivnut's shank will "mushroom" inside the sub frame, locking it into place. Finish tightening the bolt with a torque wrench set to 40 lb/ft. After the bolt/rivnut is torqued, remove the bolt and "wing". Repeat the process with the other greased bolt, a rivnut, and the other hexagonal sub frame hole.

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