Standard Ignition Engine Crankcase Breather Hose P/N:V634
Keep your engine's crankcase ventilation path flowing cleanly with the Standard Ignition Engine Crankcase Breather Hose (V769). It's a direct-fit replacement for a wide range of 2009-2020 GM trucks, vans and SUVs — including the 2009-2014 Cadillac Escalade, 2009-2020 Chevrolet Express 2500 and Express 3500, 2009-2019 Chevrolet Silverado 2500 HD and 3500 HD, 2009-2014 Chevrolet Tahoe, 2009-2019 GMC Sierra 2500 HD and 3500 HD, and the 2009 Saab 9-7X. See the Buyer's Guide tab for the full list of 33 applications.
If a failed breather hose is the cause of a vacuum leak or rough idle, this replaces it; diagnose the underlying cause before replacing. Because it is a common wear item, inspect the hose whenever you service the ventilation system.
Manufacturer part number V769.
What does the V769 breather hose do?
It routes crankcase blow-by gases along the intended crankcase-ventilation path between the engine and the intake system, helping direct vapors correctly and limit oil mist escape.
Which vehicles does this hose fit?
It's a direct-fit replacement for many 2009-2020 GM trucks, vans, and SUVs, such as the Cadillac Escalade, Chevrolet Silverado, Tahoe, Express, GMC Sierra, Yukon, and the 2009 Saab 9-7X. See the Buyer's Guide tab for all 33 applications.
How do I know if my breather hose needs replacing?
Common signs include a cracked, brittle, or collapsed hose, oil seepage or misting near its connections, or a whistling vacuum leak. Diagnose the cause before replacing.
Will this hose fix a rough idle?
If a cracked or leaking breather hose is the cause of a vacuum leak or rough idle, replacing it addresses that. Rough idle can have other causes, so confirm the source first.
Is this sold as a single hose?
Yes, this listing is for one Standard Ignition breather hose, part number V769. Confirm it matches your vehicle using the Buyer's Guide tab before ordering.
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.