Standard Ignition Engine Variable Valve Timing (VVT) Sprocket P/N:VVT521
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Keep the exhaust camshaft phasing on schedule with the Standard Ignition Engine Variable Valve Timing (VVT) Sprocket VVT521, a direct-fit replacement cataloged for the exhaust camshaft position on GM's V6-3.6L, V6-3.0L, V6-2.8L and L6-3.0L engines. It fits many vehicles, among them the 2009-2022 Chevrolet Traverse [V6-3.6L], 2007-2017 GMC Acadia [V6-3.6L] and 2013-2018 Cadillac ATS [V6-3.6L]; see the Buyer's Guide tab for the full list.
Exhaust cam actuator: Uses pressurized engine oil, metered by the VVT control solenoid, to advance and retard the exhaust camshaft relative to the crankshaft.
Precision phasing: Indexes the exhaust camshaft to the commanded position for correct valve timing.
Direct-fit replacement: Built as a direct-fit replacement for the listed GM applications.
Signs the original sprocket may need replacing include VVT-related trouble codes, a rattle at start-up, or timing-correlation faults. If a worn or stuck exhaust actuator is the cause, this replaces it. Quantity varies by application — most listed engines use two sprockets, so verify how many your engine requires before ordering.
Frequently Asked Questions
What does this VVT sprocket do?
It's the exhaust camshaft actuator. Oil pressure, metered by the VVT solenoid, adjusts the sprocket to advance or retard the exhaust cam relative to the crankshaft for correct valve timing.
Is this for the intake or exhaust camshaft?
It is cataloged for the exhaust camshaft position on the listed GM engines.
How many do I need?
Quantity varies by application. Most listed engines use two sprockets; a few call for one. Confirm how many your specific engine requires before ordering.
What vehicles does VVT521 fit?
It fits many GM vehicles, including the 2009-2022 Chevrolet Traverse [V6-3.6L], 2007-2017 GMC Acadia [V6-3.6L] and 2013-2018 Cadillac ATS [V6-3.6L]. See the Buyer's Guide tab for the full list.
What are signs this sprocket may be failing?
VVT-related trouble codes, a rattle at start-up, or camshaft/crankshaft timing-correlation faults. Diagnose the cause first; if a worn or stuck exhaust actuator is to blame, this replaces it.
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Standard Motor Products
Standard Ignition Engine Variable Valve Timing (VVT) Sprocket P/N:VVT521
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.
