Buy 2003 Toyota Tacoma 3.4L V6 M/T 4WD Base Extended Cab Pickup Stepside PCV Valve. 4-Runner; 4 Cylinder, May, Dipstick - OEM Toyota Part # 1220475020 (12204-75020)

Valve SUB - Assembly, Vent. Valve, PCV.
Calif. PCV Valve.

PCV Valve

Fits 4Runner, Tacoma

4-Runner; 4 Cylinder; California. Tacoma; 4 Cylinder; All. Tacoma; 4 Cylinder; California.
PCV Valve - Repair or Replace
If your PCV system is malfunctioning, you may notice any of several symptoms: if your tailpipe smokes or your engine idle speed is high or erratic, the PCV valve or its associated parts may need service. You may also notice that the dipstick in your 2003 Toyota Tacoma won't stay in the dipstick tube, or that your oil cap hisses as the engine is running.