AIRMAX

Installation Instructions

(1988-1995 Chevrolet 4.3/5.0/5.7L TBI Part # 15700)

 

Important! Read all instructions before you begin installation.

 

1.      Remove the original air cleaner assembly, PCV vent spacer, air inlet, and baffle.

2.      Remove the baffle retainer assembly from the fender by unbolting the two 5/16” nuts.

3.      Install two 5/16” carriage bolts into the AirMax mount. Lay the two 3/8”x1” flat washers on fender (using the existing mounting holes from the baffle retaining assembly) aligning the mounting holes. Install the AIRMAX filter assembly into the fender holes. Use the two 5/16” nuts and washers supplied with the kit. Torque to 15 ft/lb.

4.      If your air cleaner assembly used only one retaining stud omit this step. Install new plenum stud in throttle body. Thread the stud in about five full turns.

5.      Place the plenum onto throttle body catching the stud through the small hole at the top of the plenum. Finish by using original wing nut to secure plenum. (Note: some engines used a plastic PCV vent spacer and will be required to purchase a gasket to be placed between the plenum and throttle body GM #25511809 or FelPro #60038)

6.      Slip two clamps onto the filter housing. Connect the filter housing to the plenum by fitting the rubber gasket over the plenum and filter housing. The rubber gasket is to seal the gap in between the air plenum and filter housing. Once the gasket is set, adjust clamps on the rubber gasket and tighten the clamps. Tight enough so that the plenum does not slip in the gasket and that the filter housing does not slip in the gasket.

7.      Install the crankcase vent-tube to the nipple located on rear of plenum. Some models may require the supplied 2” hose extension.

 

	Parts List 1 AIRMAX assembly 1 AIRMAX Plenum 1 K&N air filter (RE-0920) 2 5/16” nuts 2 5/16” flat washers 1 TBI stud 1 3.5” rubber coupler 2 Stainless steel clamps 2 3/8”x1” flat washers 2 5/16” carriage bolts	Required Tools 1 5/16” socket 1 1/2” socket 1 Screwdriver