Keep the exhaust camshaft phasing in step with the crankshaft using the Standard Ignition Engine Variable Valve Timing (VVT) Sprocket VVT666. This is the exhaust-side unit, and it installs as a direct-fit replacement for the listed applications — including the 2007-2013 BMW 328I, 2011-2016 BMW 535I, and 2015-2018 BMW M3 (L6-3.0L), plus the 2015-2016 BMW Z4 (L4-2.0L). See the Buyer's Guide tab for the full list of 60 applications.
Exhaust position: Cataloged for the exhaust camshaft.
Mechanical role: Mounts on the exhaust camshaft and uses engine oil pressure, controlled by the ECM, to advance or retard exhaust valve timing across the engine's operating range.
Coverage: Fits BMW L6-3.0L engines and the 2015-2016 Z4 L4-2.0L application.
Over time the internal phasing mechanism can wear or stick, which may show up as a cold-start rattle, rough idle, or camshaft-position/VVT correlation codes. If a worn or faulty exhaust VVT sprocket is the cause of those symptoms, this replaces it — diagnose the underlying cause before installing.
Manufacturer part number VVT666.
Frequently Asked Questions
Is this the intake or exhaust VVT sprocket?
It is cataloged for the exhaust camshaft position — the exhaust-side variable valve timing sprocket.
What does this VVT sprocket do?
It mounts on the exhaust camshaft and uses ECM-controlled engine oil pressure to advance or retard exhaust valve timing as operating conditions change.
What are signs this part may need replacing?
A cold-start rattle, rough idle, or camshaft-position/VVT correlation trouble codes may point to a worn phasing unit. Diagnose the underlying cause before replacing it.
Which vehicles does VVT666 fit?
BMW L6-3.0L models such as the 2007-2013 328I, 2011-2016 535I, and 2015-2018 M3, plus the 2015-2016 Z4 (L4-2.0L). See the Buyer's Guide tab for all 60 applications.
How many are needed per vehicle?
The listed applications call for one (qty 1). Confirm the amount for your specific vehicle in the Buyer's Guide tab.
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