LS steam vent coolant crossover ls throttle body Bypass Cylinder Head Coolant System Air Blead Plug Plates billet Compatible With Chevy LSX LS1 LS3 LS2 LQ4 LQ9 LS6 L92 L99 L33 LR4 LM7

Fit my 243 heads on 5.3

Not much to these, but parts and hardware were of good quality for use. No issue with blocking off the back steam ports on my LS3.

Part is cheap and doesn't work at all. Poured out coolant after installed and motor all back together. Then stripped out the hex head screw trying to get it out. Now have to tear motor down again to try and git it back out. This part is crap and sry I bought it when there was so many others to choose from. It's been a total nightmare.

Very important to change on a rebuilt .never forget this coolant steam vent plugs dont forget To install the gaskets that comes with it really important