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Variable Valve Timing (VVT)

Standard® and Intermotor® are proud to offer a comprehensive line of variable valve timing (VVT) solenoids and sprockets. Scroll down to learn more about how we're providing premium replacements for this high-tech, high-failure category. 

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NEW - 5 VVT Sprockets Added

VVT Sprocket

One highlight from our latest 'New Parts Spotlight' is another expansion to our line of variable valve timing components. We've added 5 VVT Sprockets.

To view the full 'New Parts Spotlight', click here.


Comprehensive Coverage for Variable Valve Timing

Variable valve timing systems are designed to reduce emissions and maximize engine performance and fuel economy. The electro-mechanical system depends on the circulation of engine oil. Lack of oil circulation can cause VVT components to fail prematurely.

Providing a premium quality replacement for this high-tech, high-failure category, Standard® and Intermotor® are proud to introduce a line of variable valve timing solenoids and sprockets. With more than 275 SKUs in the line, Standard® and Intermotor® provide comprehensive coverage for the aftermarket.

Download our VVT Brochure

VVT info

       Standard® and
  Intermotor® offer more
    than 275 SKUs, which
      is comprehensive
   aftermarket coverage

 Irregular oil change
   service is one of
  the leading causes
   of Variable Valve
     Timing failure

  Variable Valve Timing
   is an extremely high
  tech category, which
     is why premium
    quality is a must

   Standard and Intermotor’s
          line undergoes
    extensive design and
         testing to ensure
   performance and longevity


Variable Valve Timing Solenoids

Variable valve timing solenoids can fail due to low engine oil levels and/or irregularly changed engine oil or filters. For a high-quality replacement, Standard® and Intermotor® VVT solenoids feature hard anodized components to ensure proper performance and long service life.

View Full Product Listing http://ecatalog.smpcorp.com/STD/#/searchparts/searchText/Variable Valve Timing Solenoid?type=p

Hardened steel componentry limits sticking during sludge buildup

Premium O-rings and gaskets properly maintain oil pressure and prevent premature oil leaks

Designed for optimum performance and long service life

Download Product Information

Variable Valve Timing Sprockets

Variable valve timing sprockets (a.k.a. cam phasers) help maximize engine horsepower and torque curves while reducing emissions and improving vehicle efficiency. To ensure proper performance for this important category, Standard® and Intermotor® VVT sprockets meet tight dimensional tolerances to improve internal sealing, minimize oil drain back, and reduce frequency of PCM correction.

View Full Product Listing http://ecatalog.smpcorp.com/STD/#/searchparts/searchText/vvt sprocket?type=p&search=s

OE-matching sprocket tooth profiles ensure quiet operation

OE-style installation bolts included with sprockets for ease of installation

Precision-machined to ensure accurate variable valve timing, correct rough idle, and restore drivability

Download Product Information

Designed and Tested for Real-World Conditions

In addition to providing comprehensive coverage, Standard® and Intermotor® are committed to supplying professional technicians with the premium quality that’s critical for this high-tech category. That’s why Standard® and Intermotor® VVT solenoids and sprockets undergo an in-depth design process. Our continued commitment to high-quality design and testing standards ensures that each Standard® and Intermotor® component will endure real-world conditions.


Solutions for High-Failure Applications

Every variable valve timing system is slightly different, but there are three general rules to follow to ensure proper performance. First, regularly service the engine oil and filter. Second, use the manufacturer’s required engine oil type. Lastly, service the engine oil and filter after you install new solenoids or sprockets.

A few specific applications that are known to have high failure rates for VVT solenoids include the GM 2.4L and Toyota 3.0L and 3.3L. As you can see below, Standard and Intermotor have these applications covered.


Rattling Noises and Unstable Idle on GM 2.4L

Years: 2009-2010
Make: GM
Engine: 2.4L
Common DTCs: P0011, P0014, P0016, and P0017
Symptoms: Rattling noise at startup, unstable idle
Solution: Change the engine oil and filter
during maintenance intervals and following
solenoid replacement
Parts for the job: VVT198 and VVT199


Rough Idle on Toyota 3.0L and 3.3L

Years: 2001-2007
Make: Toyota
Engines: 3.0L and 3.3L
Common DTC: P1354
Symptoms: Rough idle
Solution: Maintain regular engine oil change
intervals. When replacing the solenoids, replace the
engine oil and filter.
Parts for the job: VVT156 and VVT157


Tips for Replacing VVT Components on Ford 5.4L Engines

Replacing the VVT sprocket on a Ford 5.4L engine is an in-depth job. To help you replace it correctly, here are a few repair tips from our Installation Spotlight video. 

  • Use a pick tool to make a scribe on the timing chain. The scribe will show you where to put the chain with the new sprocket to avoid retiming the engine.
  • Remove the entire camshaft. Otherwise, it will be difficult to align the sprocket’s dowel pin. If the pin isn’t aligned perfectly, it will be sheared off, causing damage to the camshaft.

  • Tighten the sprocket bolt to 40Nm, then tighten an additional 90 degrees.

  • Torque the camshaft caps to 10Nm, working your way from the center to the outside

If you’re replacing the sprocket, our Master Technicians recommend replacing the solenoid, too. Here are a few repair tips to keep in mind during the replacement:

  • Make sure the solenoid screens are clean. Buildup of engine oil sludge is a leading cause of solenoid failure
  • Tighten the solenoid hold-down bolt to 5Nm.

  • Perform an oil change following the repair. 

A Video Playlist for VVT Repairs

Our VVT Playlist features all of our installation videos for VVT systems. Currently, you can watch repairs for Dodge 3.6L, Trailblazer 4.2L, GM 2.4L, and Ford 5.4L applications. Subscribe to our channel to be the first to know when new videos are added.


"On some systems, the intake camshaft is advanced at part throttle and WOT. The placement opens the intake valve sooner and allows some exhaust gas into the intake stroke, which has an EGR effect."


From "Read and Repair: Variable Valve Timing"