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VVT | Variable Valve Timing

NAPA® Echlin® is proud to introduce a line of variable valve timing (VVT) solenoids and sprockets. Scroll down to learn more about our newest product category.

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 components to fail prematurely.

Providing a premium quality replacement for this high-tech, high-failure category, NAPA® Echlin® is proud to introduce a line of variable valve timing solenoids and sprockets. With more than 260 SKUs in the line, NAPA® Echlin® provides comprehensive coverage for the aftermarket.

Variable valve timing facts

      NAPA® Echlin® offers
       more than 260 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

      NAPA® Echlins VVT line
  undergoes extensive design
      and testing to ensure
   performance and longevity

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Variable Valve Timing Solenoids

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

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

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Variable Valve Timing Sprockets

VVT sprockets help maximize engine horsepower and torque curves while reducing emissions and improving vehicle efficiency. To ensure proper performance for this important category, NAPA® Echlin® VVT Sprockets meet tight dimensional tolerances to improve internal sealing, minimize oil drain back, and reduce frequency of PCM correction.

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

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New Parts Added

New VVT Parts

As a sign of things to come, our initial Variable Valve Timing launch features 84 parts covering 40 million VIO. The release features an array of solenoids and sprockets for both domestic and import applications. 

To view the highlights, click here.


Designed and Tested for Real-World Conditions

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

VVT Testing

Solutions for High-Failure Applications

Every VVT 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, NAPA® Echlin® has 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


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.


How to Replace a VVT Sprocket and Solenoid on a Ford 5.4L Engine

What you need to know:

Level of difficulty: ADVANCED
Approximate installation time: 4.5 HOURS
Vehicle used: 2008 Ford F250 Super Duty


Tips for Replacing VVT Components on Ford 5.4L Engines

Replacing the 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.