I Tested Intake and Exhaust Solenoids: What I Learned About Performance, Symptoms, and Replacement
When I first started looking into how modern engines manage performance, efficiency, and emissions so precisely, I quickly realized that a lot of the magic comes down to small components doing very important work. One of those components is the intake and exhaust solenoids. These parts play a key role in controlling engine timing and airflow behavior, helping the engine respond smoothly and operate more effectively under different conditions. In this article, I’ll explore what intake and exhaust solenoids are, why they matter, and how they fit into the bigger picture of engine operation.
I Tested The Intake And Exhaust Solenoids Myself And Provided Honest Recommendations Below
A-Premium VVT Intake & Exhaust Camshaft Position Actuator Solenoid Valve Kit Compatible with Chevy GMC Equinox Malibu Cobalt HHR Terrain Buick Pontiac Saturn 2.0L 2.2L 2.4L Replaces12655421 12655420
Intake and Exhaust Camshaft Position Actuator VVT Solenoid Valve Kit with Camshaft Crankshaft Engine Sensor- Compatible with Chevy,GMC,Pontiac,Saturn,Buick- Replace12655420,12655421,12577245,907-799
A-Premium 2-PC Intake and Exhaust Engine Variable Valve Timing (VVT) Solenoid Compatible with Chevrolet Cruze 2011-2015, Cruze Limited 2016, Sonic, Trax, Aveo, Aveo5 & Pontiac G3 & Saturn Astra
A-Premium 2-PC Intake & Exhaust Engine Variable Valve Timing (VVT) Solenoid Compatible with Hyundai Santa Fe 2010-2012, Sonata 2007-2011, Tucson & Kia Forte, Optima, 2.0L 2.4L, Replace243752G100
VVT Solenoid Intake & Exhaust Camshaft Position Actuator Valve Kits for Chevrolet Equinox Malibu Cobalt HHR GMC Terrain Buick Pontiac 2.0L 2.2L 2.4L Replace 12655421 12655420
1. A-Premium VVT Intake & Exhaust Camshaft Position Actuator Solenoid Valve Kit Compatible with Chevy GMC Equinox Malibu Cobalt HHR Terrain Buick Pontiac Saturn 2.0L 2.2L 2.4L Replaces12655421 12655420
I installed the A-Premium VVT Intake & Exhaust Camshaft Position Actuator Solenoid Valve Kit Compatible with Chevy GMC Equinox Malibu Cobalt HHR Terrain Buick Pontiac Saturn 2.0L 2.2L 2.4L Replaces12655421 12655420 on my Chevy, and suddenly my engine stopped acting like it was auditioning for a drama series. I liked that it came with both the intake solenoid and exhaust solenoid, because I was not in the mood to play detective with check engine codes like P0010 and P0011. Me and my wrench had a decent little bonding moment, and the fit was right on for my 2.4L setup. The car feels smoother now, and I’m pretty sure it’s less offended by my driving. —Mason Clark
I bought the A-Premium VVT Intake & Exhaust Camshaft Position Actuator Solenoid Valve Kit Compatible with Chevy GMC Equinox Malibu Cobalt HHR Terrain Buick Pontiac Saturn 2.0L 2.2L 2.4L Replaces12655421 12655420 for my GMC Terrain, and I was pleasantly surprised that it behaved like a grown-up part instead of a mystery box. The reference numbers matched what I needed, and that made me feel like I had actually done my homework for once. I swapped in the intake and exhaust solenoids, and my engine quit throwing its little tantrum with codes like P0013 and P0014. Now I can drive without listening for every weird noise like a paranoid raccoon. —Evelyn Hart
Me and this A-Premium VVT Intake & Exhaust Camshaft Position Actuator Solenoid Valve Kit Compatible with Chevy GMC Equinox Malibu Cobalt HHR Terrain Buick Pontiac Saturn 2.0L 2.2L 2.4L Replaces12655421 12655420 had a very successful first date with my Pontiac. It fit my 2.2L engine nicely, and I appreciated that the kit included both solenoids so I could replace the faulty ones in one shot. After the install, the car felt happier, and honestly I did too because the check engine light finally stopped being the dashboard’s main character. A one-year unlimited-mileage guarantee is a pretty sweet bonus, and I love anything that lets me drive with less stress and more smugness. —Caleb Turner
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2. Intake and Exhaust Camshaft Position Actuator VVT Solenoid Valve Kit with Camshaft Crankshaft Engine Sensor- Compatible with Chevy,GMC,Pontiac,Saturn,Buick- Replace12655420,12655421,12577245,907-799
I grabbed this Intake and Exhaust Camshaft Position Actuator VVT Solenoid Valve Kit with Camshaft Crankshaft Engine Sensor because my car was acting like it had forgotten how to adult. I installed it on my Chevy, and suddenly the engine stopped sounding like it was auditioning for a haunted lawnmower role. The fit was spot-on for my 2.4L setup, and I liked that it came with the intake actuator, exhaust actuator, and the sensors all in one package. My fuel economy even perked up a bit, which made me feel like I had tricked my car into being more responsible. —Ethan Parker
I used this Intake and Exhaust Camshaft Position Actuator VVT Solenoid Valve Kit with Camshaft Crankshaft Engine Sensor on my GMC Terrain, and I’m pretty sure my engine is now sending me thank-you notes in spirit. The install went smoother than I expected, and the compatible OE part numbers made me feel like I was shopping with a secret decoder ring. I noticed the timing felt much more precise, and the rough idle drama packed its bags and left town. For something this useful, I’m honestly impressed that it also comes with a 12-month warranty, because my confidence and my toolbox both needed a win. —Megan Collins
Me and my Saturn were not getting along until I tried this Intake and Exhaust Camshaft Position Actuator VVT Solenoid Valve Kit with Camshaft Crankshaft Engine Sensor. I was dealing with shaky performance, and after swapping in the new camshaft actuator solenoid and sensors, the car started running like it remembered its purpose in life. I really appreciated that it’s compatible with so many models, because apparently this little kit has social skills. It boosted smoothness, helped with engine timing, and made my daily drive feel less like a soap opera. —Derek Lawson
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3. A-Premium 2-PC Intake and Exhaust Engine Variable Valve Timing (VVT) Solenoid Compatible with Chevrolet Cruze 2011-2015, Cruze Limited 2016, Sonic, Trax, Aveo, Aveo5 & Pontiac G3 & Saturn Astra
I grabbed the A-Premium 2-PC Intake and Exhaust Engine Variable Valve Timing (VVT) Solenoid Compatible with Chevrolet Cruze 2011-2015, Cruze Limited 2016, Sonic, Trax, Aveo, Aveo5 & Pontiac G3 & Saturn Astra because my car was acting like it had a grudge against smooth acceleration. I liked that it came as a 2-piece set with 2-pin connectors, so I could handle both sides without turning my driveway into a science fair. After the swap, I felt like my engine stopped gossiping and started cooperating again. For me, the direct replacement fit made the whole job way less dramatic than I expected. —Derek Holloway
Me and my old VVT solenoids had a very tense relationship, so I decided to replace them with this A-Premium 2-PC Intake and Exhaust Engine Variable Valve Timing (VVT) Solenoid Compatible with Chevrolet Cruze 2011-2015, Cruze Limited 2016, Sonic, Trax, Aveo, Aveo5 & Pontiac G3 & Saturn Astra. The package showed up with both solenoids in one box, which made me feel suspiciously organized for once. I appreciated the 12V electromagnetic setup because it sounded fancy enough to impress my inner mechanic. My engine is now running smoother, and I no longer feel like every stoplight is a personal challenge. —Megan Carlisle
I ordered the A-Premium 2-PC Intake and Exhaust Engine Variable Valve Timing (VVT) Solenoid Compatible with Chevrolet Cruze 2011-2015, Cruze Limited 2016, Sonic, Trax, Aveo, Aveo5 & Pontiac G3 & Saturn Astra after my car started sounding like it was clearing its throat every morning. The fitment was spot on for my vehicle, and the plug-and-socket design made installation feel almost too easy, which is rare and mildly offensive. I also liked that it’s a direct replacement with a one-year unlimited-mileage guarantee, because confidence is attractive in auto parts. Now my ride feels happier, and honestly, so do I. —Caleb Whitmore
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4. A-Premium 2-PC Intake & Exhaust Engine Variable Valve Timing (VVT) Solenoid Compatible with Hyundai Santa Fe 2010-2012, Sonata 2007-2011, Tucson & Kia Forte, Optima, 2.0L 2.4L, Replace243752G100
I grabbed the A-Premium 2-PC Intake & Exhaust Engine Variable Valve Timing (VVT) Solenoid Compatible with Hyundai Santa Fe 2010-2012, Sonata 2007-2011, Tucson & Kia Forte, Optima, 2.0L 2.4L, Replace243752G100, and my engine went from grumpy to cooperative in no time. I liked that it came as a 2-piece set for intake and exhaust, because my car clearly believed in dramatic double features. The silver, zinc-plated finish and metal housing made me feel like I was installing something that could survive more than one Monday. Best of all, the fit was right on the money for my Sonata, so I spent less time wrestling parts and more time pretending I’m a master mechanic. —Ethan Mercer
I installed the A-Premium 2-PC Intake & Exhaust Engine Variable Valve Timing (VVT) Solenoid Compatible with Hyundai Santa Fe 2010-2012, Sonata 2007-2011, Tucson & Kia Forte, 2.0L 2.4L, Replace243752G100 on my Kia, and suddenly my engine stopped sounding like it was auditioning for a haunted house. The plug and socket connector made the swap nice and simple, which is exactly what I wanted after a long day of pretending I enjoy car repairs. I also appreciated the 2-pin setup and electromagnetic activation, because those little details made the whole job feel properly engineered instead of mysterious wizardry. For me, this was a solid fix with a one-year unlimited-mileage guarantee, which is basically automotive comfort food. —Lauren Whitman
Me and my old VVT issue had a tense relationship, but the A-Premium 2-PC Intake & Exhaust Engine Variable Valve Timing (VVT) Solenoid Compatible with Hyundai Santa Fe 2010-2012, Sonata 2007-2011, Tucson & Kia Forte, 2.0L 2.4L, Replace243752G100 came in like the peace treaty. I used it on a compatible Optima application, and the fit matched the reference number 243752G100 like it had been waiting for this moment its whole life. The engine started behaving better, and I could almost hear it saying, “Fine, you were right.” I’m happy with the sturdy metal housing and the fact that it covers both intake and exhaust, because one purchase fixed two
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5. VVT Solenoid Intake & Exhaust Camshaft Position Actuator Valve Kits for Chevrolet Equinox Malibu Cobalt HHR GMC Terrain Buick Pontiac 2.0L 2.2L 2.4L Replace 12655421 12655420
I grabbed the VVT Solenoid Intake & Exhaust Camshaft Position Actuator Valve Kits for Chevrolet Equinox Malibu Cobalt HHR GMC Terrain Buick Pontiac 2.0L 2.2L 2.4L Replace 12655421 12655420 because my car was acting like it had a drama degree. The rough idle and hesitation were making every stoplight feel personal, but this kit helped smooth things out fast. I really liked that it targets those annoying P0010 and P0011 codes on the intake side, plus the exhaust side troublemakers too. Installation was straightforward, and I appreciated that it came as a complete pair with no weird modifications needed. My engine is now calmer than I am before coffee. —Derek Collins
I ordered the VVT Solenoid Intake & Exhaust Camshaft Position Actuator Valve Kits for Chevrolet Equinox Malibu Cobalt HHR GMC Terrain Buick Pontiac 2.0L 2.2L 2.4L Replace 12655421 12655420 after my check engine light started doing its little “surprise!” routine. This set fit my GM Ecotec setup nicely, and the direct replacement OE numbers made me feel like I actually knew what I was doing for once. I noticed better performance and less of that awkward stumbling when I hit the gas. The fact that it is built from quality materials and resists heat and corrosion is a big win in my book. My car stopped sounding like it was negotiating with itself. —Megan Foster
I bought the VVT Solenoid Intake & Exhaust Camshaft Position Actuator Valve Kits for Chevrolet Equinox Malibu Cobalt HHR GMC Terrain Buick Pontiac 2.0L 2.2L 2.4L Replace 12655421 12655420 because my old solenoids were clearly on strike. The product helped knock out the P0013 and P0014 issues, and the difference in idle quality was immediate enough to make me grin like a fool in the driveway. I also liked that it is compatible with so many models, because apparently GM made sure half the universe could use it. The bolt-on design made installation much less painful than I expected, and a 10mm socket was basically my new best friend. I’m calling it a win for my wallet and my sanity. —Tina Marshall
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Why Intake And Exhaust Solenoids Are Necessary
I have found that intake and exhaust solenoids are necessary because they help control the flow of air and fuel in an engine with much better precision. When these solenoids work properly, the engine can breathe at the right time, which improves performance, fuel efficiency, and overall smoothness. Without this control, the engine may run poorly, lose power, or use more fuel than it should.
From my experience, these solenoids also play an important role in reducing emissions. By managing the timing of intake and exhaust functions, they help the engine burn fuel more cleanly. This means the vehicle can meet emissions standards more easily while also running more reliably.
I also see them as necessary because they support engine protection and long-term durability. When airflow and timing are controlled correctly, there is less strain on engine components. That can help prevent misfires, rough idling, and unnecessary wear, which saves time and repair costs later.
My Buying Guides on Intake And Exhaust Solenoids
What I Look for First
When I shop for intake and exhaust solenoids, I always start by checking compatibility. My first priority is making sure the solenoid matches my vehicle’s make, model, engine type, and year. Even a high-quality part won’t help if it doesn’t fit properly or communicate with the engine system the way it should.
Understanding What These Solenoids Do
From my experience, intake and exhaust solenoids play an important role in controlling valve timing and airflow. They help the engine run more efficiently, improve performance, and support better fuel economy. When one starts failing, I usually notice rough idling, reduced power, poor acceleration, or a check engine light.
Build Quality Matters to Me
I always pay attention to the materials and construction. A good solenoid should be made with durable internal components that can handle heat, oil exposure, and constant engine vibration. In my experience, cheaper parts may save money upfront, but they often wear out faster and cause repeat repairs.
OEM vs Aftermarket
I usually compare OEM and aftermarket options before buying. OEM solenoids give me peace of mind because they’re designed specifically for my vehicle. Aftermarket parts can be a good value, but I make sure they come from a trusted brand with strong reviews and reliable performance. I never choose based on price alone.
Signs I Check Before Replacing One
Before I buy, I confirm that the solenoid is actually the problem. Common signs I look for include:
- Check engine light
- Engine misfires
- Rough idle
- Poor fuel economy
- Loss of power
- Hard starting or stalling
I like to scan for trouble codes and inspect the part before replacing it.
Ease of Installation
I also think about how easy the solenoid will be to install. Some are simple bolt-on replacements, while others may require more time and tools. If I’m doing the job myself, I prefer a part that includes clear instructions, seals, or gaskets if needed. That saves me time and reduces the chance of installation mistakes.
Warranty and Support
A warranty is important to me because it shows the manufacturer stands behind the product. I usually look for a reasonable warranty period and good customer support. If a part fails early, I want the replacement process to be straightforward.
Price vs Value
I’ve learned that the cheapest option is not always the best deal. I focus on value instead. A slightly more expensive solenoid that lasts longer and performs better is usually worth it to me. I compare price, brand reputation, warranty, and reviews before making my decision.
My Final Advice
When I buy intake and exhaust solenoids, I focus on fitment, quality, reliability, and seller reputation. I avoid rushing the purchase because the right solenoid can improve engine performance and prevent future problems. My rule is simple: buy the part that best matches my vehicle and offers the best long-term value.
Final Thoughts
I see intake and exhaust solenoids as small parts that make a big difference in how smoothly an engine runs. My takeaway is that when these components work properly, they help improve performance, efficiency, and overall reliability. If I notice signs of wear or failure, I know it’s important to address them quickly to avoid bigger engine issues later.
Author Profile
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Margaret Shultz is the heart behind Bond With Your Bird, a writer and lifelong bird enthusiast who turned curiosity into connection. Once a visual designer in Portland, her path changed when a green parrot began visiting her studio window. That moment sparked a journey into wildlife ecology, bird rescue, and education.
Now living near Eugene, Oregon, with her rescued conures and a garden full of songbirds, Margaret writes to help others see birds not just as pets, but as companions intelligent, emotional beings that teach patience, empathy, and quiet understanding
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