Does anybody know if the stock k04 and the ZFR boost control solenoids are the same? I've got the P/N for the one on the ZFR but I cannot find the PN for the k04 for the life of me. google is failing me.

pn for the zfr one is 55557806

 

I didn't know which solenoid you are looking for but here is what I found.

12633411 (BPV solenoid/actuator, the one on the intake manifold)
SOLENOID. Turbocharger/Supercharger Cooling. 2008 Chevrolet Cobalt # 12633411
also, Ecotec LNF Bypass Valve Solenoid 12633411

and, 19168559 (Boost controller solenoid/actuator, the one on the turbo itself)
ACTUATOR KIT. Turbocharger/Supercharger. Fits: Chevrolet: Cobalt (2008-2010), HHR (2008-2010); Pontiac: Pursuit (2008-2010), Solstice (2007-2010); Saturn: Sky (2007-2010). # 19168559.

As to either of them being the same as the zfr, I have no idea, but they should have the same functions, just different designs.

 

the bypass valve solenoid. thanks. it seems like every place calls it something different.

 

You're welcome.