Parts needed: 1 Napa 6637 filter (Wix 46637) or equivelant, 1 constant torque clamp to fit filter (intercooler hose clamp), 1 piece of 4" exhaust tubing 4"-5" long, Spray paint for the tubing if not stainless.
1. Remove entire stock air box assembly and loosen the clamp on the other end of the black hose connecting it to the engine.
2. Push the 4" exhaust tubing into the black hose and tighten up the stock hose clamp on that end only. The tubing needs to be stainless otherwise paint it inside and out to prevent it from rusting. I painted mine black and applied a THIN layer of grease on the inside of the stock hose and the new air filter so that the paint wouldn't stick to them when I change air filters.
3. Place the constant torque clamp over the air filter and push the air filter over the exhaust tubing - do not tighten the clamp yet. It is a good idea to mark the tubing at the minimum length that the filter needs to be pushed on, which is about 1"
4. Place the filter down into its possition as seen in the picture. You may have to rotate the black hose on the engine side some and adjust how far the the filter is pushed onto the tubing.
5. Tighten the clamp on the engine side of the black hose.
6. Once you are sure the tubing is going straight into the filter tighten the clamp. You may want to pull the air filter up out of possition and rest it on the battery but be careful of the positive terminal especiall if it is not covered. Put the filter back into its resting place and enjoy the new found turbo whistle (especially if you have a 3" downpipe installed)
96 F-350 CC Dually My TDG Gallery
B codes, head studs, Comp 910 valve springs, stock turbo w/ 1.00 turbine housing
6.0 IC, NAPA 6637 air filter, AeroTurbine 4040XL, ITP Overboost Annihilator,
Quadzilla Commander, electric fuel system w/ regulated return
coolant filter, 203* thermostat
Dually Club Member #53
12/15/07 Greeley, CO w/ stage 1 injectors and Wildman tunes