Keep crankcase pressure in check and route blow-by vapors back into the engine with the Standard Ignition PCV Valve V409. It drops in as a direct-fit replacement for the 1990-1991 GEO PRIZM, the 1990-1991 GEO STORM, and the 1989 ISUZU I-MARK, handling the positive crankcase ventilation job on those applications.
- Manages crankcase ventilation: meters the flow of blow-by gases from the crankcase into the intake so they are burned instead of escaping.
- Spring-loaded flow control: the internal valve varies opening with manifold vacuum to help maintain proper crankcase pressure across engine conditions.
- Direct-fit service part: designed to install in place of the original PCV valve on the listed applications.
Signs the PCV valve may need replacing include rough or unstable idle, oil leaks from seals or gaskets under crankcase pressure, and a whistling or hissing noise. These symptoms can have other causes, so diagnose the system first; if a failed PCV valve is the cause, this V409 replaces it.
Interchange: PCV365 · 2-9365 · 29365 · 94310119
Manufacturer part number V409
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does the Standard Ignition V409 PCV valve do?
It meters blow-by gases from the crankcase into the intake so they are burned in the engine, helping maintain proper crankcase pressure and ventilation.
Which vehicles does the V409 fit?
It is a direct-fit replacement for the 1990-1991 GEO PRIZM, 1990-1991 GEO STORM, and 1989 ISUZU I-MARK. Check the Buyer's Guide tab to confirm your vehicle.
What are the signs of a failing PCV valve?
Common signs include rough or unstable idle, oil leaks at seals or gaskets, and a whistling or hissing noise. Diagnose the cause before replacing, as other issues can produce these symptoms.
What numbers does this part interchange with?
It interchanges with PCV365, 2-9365 (29365), and 94310119. Its manufacturer part number is V409.
Will replacing the PCV valve fix my rough idle?
If a failed PCV valve is the cause of the rough idle, this replaces it. A rough idle can have other causes, so diagnose the system before ordering.
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