Standard Ignition Engine Crankcase Breather Hose P/N:V634
Standard Motor Products
Keep your engine's crankcase breathing freely with the Standard Ignition Engine Crankcase Breather Hose (V768) — a direct-fit replacement for the 1996-2005 Chevrolet Astro and 1996-2005 Chevrolet Blazer. This crankcase vent hose routes blow-by vapors from the crankcase through the intended ventilation path, helping the system manage pressure and vapor flow the way the factory hose did before it cracked or hardened.
Confirm the exact engine application for your vehicle in the "Vehicles it fits" section before ordering.
Interchange: 2-9839
29839 · PCV853 · 93441238
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
What does this crankcase breather hose do?
It routes crankcase blow-by vapors through the engine's intended ventilation path, helping the system manage pressure and vapor flow the way the original hose did.
Will the V768 fit my vehicle?
It's a direct-fit replacement for the 1996-2005 Chevrolet Astro and 1996-2005 Chevrolet Blazer. Confirm the exact engine application in the "Vehicles it fits" section before ordering.
Can a bad breather hose cause a vacuum leak?
Yes. A cracked or hardened hose can leak and create a vacuum leak. If the hose is the cause, this replacement restores a sealed ventilation path.
Could a leaking breather hose set off a check engine light?
It can. A leaking hose may trigger an emissions-related trouble code. If the hose is the source, replacing it addresses that cause; diagnose to confirm before replacing.
What interchange numbers does this hose replace?
It cross-references 2-9839, 29839, PCV853, and 93441238.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.