LS PNEUMATIC AIR HOSE - VALVE HOLDING BY CYLINDER PRESSURE TOOL

Our Pneumatic hose tool allows you to pressurise the cylinder to hold up the valves when doing a spring swap. Compatible with both spark plug sizes (small + large).

This tool makes it easy for anyone to carry out a spring change at home or the professional shop.

• LS Cam swap + spring upgrade,
• Inner spring replacement after a flat tappet cam break in. 

How it works: 

Screw one end of the hose into the spark plug hole, connect the other end of the hose to your air compressor (you will need your own addaptor for this). The air pressure in the cylinder will hold up the valves while you carry out the spring swap. 

**Note: Make sure the rockers are off and the piston is at BDC and vehicle is in neutral. (things could get hairy if left in gear or a wrench left attached to the crank bolt)

Need a spring compressor? See our other listing: