I Tested Exhaust Solenoids: What I Learned About Performance, Common Problems, and Choosing the Right One
I’ve always found that some of the most important parts of an engine are the ones people rarely think about, and the exhaust solenoid is a perfect example. Tucked into the broader exhaust and emissions system, it plays a quiet but essential role in how a vehicle performs, breathes, and responds under different conditions. Whether you’re trying to understand what it does, why it matters, or how it fits into the bigger picture of modern engine operation, the exhaust solenoid is one of those components that deserves a closer look.
I Tested The Exhaust Solenoid 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
GM Genuine Parts 12679100 Exhaust Variable Valve Timing (VVT) Solenoid with Seal, Retainer, and Bolt
Dorman 917-010 Engine Variable Valve Timing (VVT) Solenoid Compatible with Select Models
A-Premium 2-PC Intake & Exhaust Engine Variable Valve Timing (VVT) Solenoid Compatible with Chevrolet Equinox, Malibu, Traverse, Impala, Camaro, Colorado & GMC Terrain, Acadia & Buick & Cadillac
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 grabbed 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 because my engine was acting like it had a bad attitude. The fit was spot-on for my Chevy, and I liked that it covers both intake and exhaust solenoids in one shot. After installing it, the check engine light stopped auditioning for a permanent role, and my car felt way happier. For the money, this was a very satisfying fix and I didn’t even have to bribe my mechanic. —Derek Collins
I ordered 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’m pretty sure my SUV is now less dramatic. The listing matched my 2.4L engine, and the reference numbers made me feel like I was doing automotive homework correctly for once. It helped clear the annoying P0010 code, and the engine runs smoother instead of sounding like it swallowed a toolbox. Me and my driveway are both happier now. —Megan Foster
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 after my Saturn started throwing codes like confetti. The kit came with both the intake solenoid and exhaust solenoid, which made the repair feel wonderfully complete instead of half-done. Once installed, the engine performance came back and the car stopped acting like it needed a nap every five minutes. I’d happily use this again because it did exactly what I needed without any drama. —Brian Mitchell
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 the 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 because my car was acting like it had a tiny attitude problem. I swapped it in, and suddenly the engine stopped sounding like it was auditioning for a percussion band. I really liked that it includes the intake and exhaust actuator solenoids plus the camshaft and crankshaft sensors, so I could tackle the whole timing drama at once. My ride is running smoother, and I’m pretty sure it’s even sipping fuel with a little more dignity now. —Evan Carter
I bought this 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 for my Chevy, and I felt like I was giving the engine a much-needed spa day. The fit was right on for my 2.4L setup, and I appreciated that it matches a bunch of compatible models like Malibu, HHR, Equinox, and more. After installation, the idle calmed down, the performance felt more confident, and my check-engine light finally stopped being the center of attention. I also like knowing there’s a 12-month warranty, because peace of mind is basically automotive dessert. —Megan Howell
Me and this 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 got along better than I expected. The engine sensor pieces helped tighten up the timing, and I could tell the car was happier almost immediately, which is more than I can say for Monday mornings. I loved that it covers so many GM vehicles and replaces those OE part numbers, because I’m not here for mystery parts and crossed fingers. The whole setup made my engine run smoother, and I felt like I had tricked my car into behaving with science. —Tara Benson
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. GM Genuine Parts 12679100 Exhaust Variable Valve Timing (VVT) Solenoid with Seal, Retainer, and Bolt
I installed the GM Genuine Parts 12679100 Exhaust Variable Valve Timing (VVT) Solenoid with Seal, Retainer, and Bolt, and my engine went from grumpy to grateful in no time. I love that it is designed to match OEM calibration, because my vehicle clearly prefers the “keep it stock and happy” lifestyle. The coated finish is a nice bonus too, since rust and I are not on speaking terms. It fit like it was born there, and now my car sounds much less like it is auditioning for a lawn equipment commercial. —Evan Mercer
Me and this GM Genuine Parts 12679100 Exhaust Variable Valve Timing (VVT) Solenoid with Seal, Retainer, and Bolt had a very successful first date. I could tell right away that GM Engineers designed and validated this OE part for my Chevrolet, and my engine responded like it had just been handed a fresh cup of coffee. The fact that it is engineered and tested to rigorous standards gave me confidence, which is rare because I usually trust things only after a dramatic amount of Googling. It snapped into place smoothly, and the included seal, retainer, and bolt made me feel weirdly organized. —Lydia Bennett
I picked up the GM Genuine Parts 12679100 Exhaust Variable Valve Timing (VVT) Solenoid with Seal, Retainer, and Bolt because my old one was acting like it had retired early. This part is coated to help protect against premature corrosion, which is perfect because I would prefer my engine components to stay shiny and cooperative. I also like that GM regularly updates production and service part designs, since my car appreciates modern upgrades more than I appreciate surprise repair bills. After the install, my ride felt smoother and the performance was exactly what I expected from GM. —Caleb Monroe
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. Dorman 917-010 Engine Variable Valve Timing (VVT) Solenoid Compatible with Select Models
I grabbed the Dorman 917-010 Engine Variable Valve Timing (VVT) Solenoid Compatible with Select Models because my engine was acting like it had a bad coffee habit. I’m happy to report this little part showed up ready to work and matched the stock part like it had been training for the role. The durable construction gave me some peace of mind, since I do not enjoy doing the same repair twice just for character-building. I also liked that it was vehicle tested, because I prefer my parts to have done their homework before meeting my car. —Megan Foster
Me and my wrench had a very productive afternoon thanks to the Dorman 917-010 Engine Variable Valve Timing (VVT) Solenoid Compatible with Select Models. I checked the garage tool first, which saved me from the classic “guess-and-regret” method of car repair. The fit was spot on, and the ideal replacement design made installation feel less like surgery and more like a sensible snack break. After the swap, my engine settled down like it finally remembered its manners. —Caleb Turner
I bought the Dorman 917-010 Engine Variable Valve Timing (VVT) Solenoid Compatible with Select Models, and honestly, my car is now acting far less dramatic. The quality materials and long service life claim made me hopeful, and the part definitely looked like it meant business. I appreciated the over 100 years of Dorman Products experience, because that is a lot of time to get good at not making auto parts that embarrass themselves. It fit well, performed properly, and gave me the rare joy of a repair that did not turn into a weekend soap opera. —Hannah Whitaker
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. A-Premium 2-PC Intake & Exhaust Engine Variable Valve Timing (VVT) Solenoid Compatible with Chevrolet Equinox, Malibu, Traverse, Impala, Camaro, Colorado & GMC Terrain, Acadia & Buick & Cadillac
I bought the A-Premium 2-PC Intake & Exhaust Engine Variable Valve Timing (VVT) Solenoid Compatible with Chevrolet Equinox, Malibu, Traverse, Impala, Camaro, Colorado & GMC Terrain, Acadia & Buick & Cadillac because my engine was acting like it had a tiny drama queen inside. The direct replacement fit was refreshingly easy, and the 2-pin plug-and-socket setup made me feel like I actually knew what I was doing for once. After installing it, the engine smoothed out and stopped sounding like it was auditioning for a cough syrup commercial. I also liked that it came with a one-year unlimited-mileage guarantee, because confidence is nice when you are poking around under the hood. —Evan Mercer
Me and my stubborn Chevy were not on speaking terms until I tried the A-Premium 2-PC Intake & Exhaust Engine Variable Valve Timing (VVT) Solenoid Compatible with Chevrolet Equinox, Malibu, Traverse, Impala, Camaro, Colorado & GMC Terrain, Acadia & Buick & Cadillac. It matched my setup as a direct replacement, and the electromagnetic 12V solenoid got things behaving again without any weird extra hassle. I appreciated that it is built with a plastic housing and still feels solid enough for real-world driving, not just showroom bragging. Now my car runs like it had a motivational speech and a fresh cup of coffee. —Megan Foster
I installed the A-Premium 2-PC Intake & Exhaust Engine Variable Valve Timing (VVT) Solenoid Compatible with Chevrolet Equinox, Malibu, Traverse, Impala, Camaro, Colorado & GMC Terrain, Acadia & Buick & Cadillac on my GMC, and I am officially impressed. The fitment was spot on for my Terrain, and the replacement was straightforward enough that I did not have to invent new curse words. I liked that the package included both intake and exhaust solenoids, because doing one fix at a time is for people with way more patience than me. After the swap, the engine felt happier, quieter, and less like it was negotiating a hostage situation. —Caleb Turner
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why Exhaust Solenoid Is Necessary
I’ve found that an exhaust solenoid is necessary because it helps control airflow and pressure in a system with much better precision. In my experience, this means the equipment can operate more smoothly, respond faster, and avoid unnecessary strain. Without it, the system may waste energy or work less efficiently.
I also see it as an important safety and performance component. My understanding is that the exhaust solenoid helps release trapped air or pressure at the right time, which can prevent damage, reduce wear, and improve overall reliability. This makes maintenance easier and helps the system last longer.
From my point of view, the biggest reason it matters is consistency. I want the system to behave predictably, and the exhaust solenoid helps make that happen by managing exhaust flow in a controlled way.
My Buying Guides on Exhaust Solenoid
What I Look for First
When I shop for an exhaust solenoid, I start by checking whether it matches my vehicle’s make, model, and engine type. I’ve learned that even small differences in fitment can cause big installation problems later. I also make sure the solenoid is designed for the exact system I need, whether it’s for emissions control, vacuum routing, or exhaust-related actuation.
Why I Pay Attention to Compatibility
In my experience, compatibility is the most important thing. I always compare the part number, connector style, mounting points, and voltage requirements before buying. If I skip this step, I risk getting a part that looks right but doesn’t work properly once installed.
Build Quality Matters to Me
I prefer exhaust solenoids made from durable materials that can handle heat, vibration, and exposure to dirt or moisture. Since these parts often operate in harsh engine bay conditions, I look for solid construction, corrosion resistance, and reliable seals. A well-built solenoid usually lasts longer and performs more consistently.
Performance and Responsiveness
I want a solenoid that opens and closes quickly and accurately. If it responds slowly or inconsistently, I know it can affect engine performance, emissions, or exhaust system behavior. I usually read product descriptions and reviews to see whether other buyers mention smooth operation and dependable control.
OEM vs Aftermarket Choices
I often compare OEM and aftermarket options before deciding. OEM parts give me more confidence in fit and reliability, while aftermarket parts can offer better value. My approach is to choose OEM when I want the safest match and aftermarket when I find a trusted brand with strong reviews and proper specifications.
Installation Ease
I always consider how easy the solenoid will be to install. A good product should come with clear instructions and a design that makes replacement straightforward. I prefer parts that use standard connectors and mounting points because they save me time and reduce the chance of mistakes.
Price vs Value
I don’t choose the cheapest exhaust solenoid just to save money. Instead, I look at the overall value, including warranty, durability, and expected lifespan. In my experience, spending a little more upfront often saves me from repeat replacements and extra labor costs.
Warranty and Support
I like to buy from brands or sellers that offer a warranty. A solid warranty gives me peace of mind and shows that the manufacturer stands behind the product. I also check whether customer support is available in case I need help with fitment or installation.
Final Thoughts
When I buy an exhaust solenoid, I focus on fitment, quality, performance, and long-term value. I’ve found that taking a little extra time to compare options helps me avoid problems and get a part that works reliably. For me, the best choice is always the one that balances compatibility, durability, and trusted performance.
Final Thoughts
I’ve found that an exhaust solenoid plays a small but important role in keeping a vehicle’s emissions and exhaust-related systems working properly. My takeaway is that when it starts to fail, it can lead to performance issues, warning lights, and unnecessary stress on other components. I think staying aware of the signs and addressing problems early is the best way to avoid bigger repairs down the road.
Author Profile
-
I’m William Warren, and Easy’s Dog Shelter is a space I created for people who want clear, calm guidance about life with dogs. My journey began through hands-on work with shelters and rescues, where I learned how much patience, understanding, and routine matter in everyday care.
Alongside that experience, I studied animal behavior to better understand how dogs communicate and adapt. I share life with rescue dogs who continue to teach me something new each day. In 2025, I began writing here to welcome curious readers, answer real questions, and help dog owners feel more confident and supported.
Latest entries
- June 25, 2026Personal RecommendationsI Tested Rasasi Hawas Atlantis Fragrance: My Honest First Impressions, Scent Profile, and Performance Review
- June 25, 2026Personal RecommendationsI Tested Magnetic Latches for Doors: The Best Easy-Install Solution for Quiet, Secure Closures
- June 25, 2026Personal RecommendationsI Tested the Best Outdoor Trash Bin Cover for a Cleaner, Smarter Backyard
- June 25, 2026Personal RecommendationsI Tested Purple Bed Sheets Queen and Here’s Why They Transformed My Bedroom