PCV VALVE PCM 90° - Original PCM R035015
3/8" Outside Diameter Nipple X 3/4" Outside Diameter Barrel
Most GM 350 - 454 and Ford 302 - 351
Not for PCM EFI GT40 - Use Part # 50-5001
Replace when it does not rattle when you shake it.
This indicates a poor crank case ventilation
Other indicators are: Excess oil or rough idle situations