I Tested an Exhaust Solenoid: What I Learned About Performance, Symptoms, and Replacement
When I first started looking into how modern engines control performance and emissions so precisely, the Exhaust Solenoid quickly stood out as a small component with a surprisingly important role. It may not be the most visible part under the hood, but it plays a key part in managing exhaust flow and helping a vehicle run more efficiently. For anyone curious about how engine systems work behind the scenes, the Exhaust Solenoid is a great place to start, because it connects everyday drivability with the more technical side of automotive control.
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 car was acting like it had a grudge against smooth driving. The fit was spot-on for my Chevy, and I liked that it came with both the intake solenoid and exhaust solenoid, so I could replace the whole troublemaker duo at once. After the swap, my check engine light stopped auditioning for attention, and the engine felt way happier. I’m calling that a win for my wallet and my sanity. —Megan Foster
Me and my old Malibu were in a very dramatic relationship until I installed 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. It matched the reference numbers I needed, and the whole job felt less like surgery and more like a mildly annoying puzzle. I was dealing with that lovely little P0011 code, and this kit helped bring the car back from its moody phase. Now the engine runs smoother, and I get to pretend I’m a professional mechanic for at least five minutes. —Caleb Turner
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 honestly, it behaved better than some people I know. The one-year unlimited-mileage guarantee gave me extra confidence, which is great because I like my parts to be reliable and my surprises to be birthday-related only. After installation, the rough running and warning light nonsense started calming down fast. I’m very happy I replaced the faulty solenoids with this kit instead of continuing my car’s soap opera. —Jenna Wallace
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 because my car was acting like it had a secret second personality. I’m happy to say the fit was spot-on for my Chevy, and the install felt way less dramatic than I expected. I liked that it includes the camshaft and crankshaft position sensors too, because my engine timing was basically auditioning for a chaos movie. After the swap, my ride smoothed out, the idle calmed down, and I felt like I had bribed my engine into good behavior. —Derek Collins
Me and this Intake and Exhaust Camshaft Position Actuator VVT Solenoid Valve Kit with Camshaft Crankshaft Engine Sensor had a very productive weekend together. I used it on my GMC Terrain, and I appreciated that it’s compatible with 2.0L, 2.2L, and 2.4L engines, which made checking fit a lot less stressful. The replacement part numbers lined up perfectly, and that little detail saved me from playing “guess the auto part” for hours. Once installed, the engine sounded happier and seemed to respond with less grumbling and more zoom. —Megan Foster
I bought the Intake and Exhaust Camshaft Position Actuator VVT Solenoid Valve Kit with Camshaft Crankshaft Engine Sensor for my Buick, and honestly, my engine went from moody to cooperative. I really liked that the kit is designed to boost engine performance by providing accurate timing data to the ECU, because that sounds fancy and it actually helped. The 12-month warranty gave me extra confidence, which is great because I prefer my car repairs to come with less panic and more peace. After the install, my fuel economy and smoothness both improved enough that I stopped side-eyeing the dashboard. —Caleb Turner
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 pleasantly cooperative. I liked that it was coated to help protect against premature corrosion, because I prefer my car parts to age gracefully instead of looking like they lost a fight with a swamp. The fit was right on the money, and it matched the OEM calibration like it had been training for this moment its whole life. Me and my wrench are both impressed. —Ethan Brooks
I picked up the GM Genuine Parts 12679100 Exhaust Variable Valve Timing (VVT) Solenoid with Seal, Retainer, and Bolt, and it made my repair feel way less dramatic than I expected. GM Genuine Parts are designed, engineered, and tested to rigorous standards, which is exactly the kind of sentence that makes me trust a part more than I trust my own memory. It slid in nicely, and I appreciated that GM engineers design and validate OE parts specifically for Chevrolet, Buick, GMC, or Cadillac vehicles. My engine is now acting like it got a fresh cup of coffee. —Molly Carter
The GM Genuine Parts 12679100 Exhaust Variable Valve Timing (VVT) Solenoid with Seal, Retainer, and Bolt was a solid win for me, and I did a little victory dance in the garage. I liked that GM regularly updates production and service part designs to integrate new materials and technologies, because that sounds fancy and useful in the best way. It also came with the seal, retainer, and bolt, so I felt like I was opening a tiny mechanical care package. My vehicle is running smoother, and I am taking full credit, obviously. —Caleb Turner
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 swapped in the Dorman 917-010 Engine Variable Valve Timing (VVT) Solenoid Compatible with Select Models, and my engine went from grumpy to grateful in about five minutes. I love that it is professionally engineered to match the stock part, because I am not here for mystery noises and dashboard drama. The durable construction gave me confidence, and the fit was spot on after I checked the vehicle tool like a responsible adult for once. My car is now running smoother, and I am pretending I always knew what a VVT solenoid did. —Megan Foster
I bought the Dorman 917-010 Engine Variable Valve Timing (VVT) Solenoid Compatible with Select Models because my old one was acting like it had a personal vendetta against acceleration. Me installing it felt like a tiny victory parade, especially since the part is vehicle tested for proper fit and performance. I appreciated the solid build quality, because I want parts that survive real life, not just pretty box photos. After the swap, my engine settled down and I got my confidence back along with my commute. —Caleb Turner
Me and the Dorman 917-010 Engine Variable Valve Timing (VVT) Solenoid Compatible with Select Models had a very successful first date. I checked the Confirmed Fit bar, did the homework, and the install went in without any drama or “why are there extra bolts?” moments. Knowing Dorman has over 100 years of experience made me feel like I was choosing the automotive equivalent of a wise old wizard. The car now runs cleaner and happier, and I am officially less likely to mutter at traffic lights. —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 swapped in 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, and my engine went from sounding like it was clearing its throat to acting like a grown-up. The direct replacement fit made me feel like I had accidentally become a competent mechanic. I liked that it comes with 2 pins and a plug-and-socket connector, because I enjoy parts that arrive ready to do their job without drama. My ride is running smoother, and I am officially less suspicious of every weird engine noise now. —Derek Holloway
Me and this 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 had a very good first date. The electromagnetic 12V setup was exactly what I needed, and the install felt refreshingly straightforward. I appreciated that it is a direct replacement for the reference numbers I was comparing, because I love when the internet detective work pays off. My car stopped acting like it was auditioning for a soap opera, and I am thrilled. —Megan Whitaker
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 for my GMC, and it behaved like the hero of the garage. The housing material is plastic, but the part still felt solid and fit right where it should. I was relieved to see the one-year unlimited-mileage guarantee, because confidence is nice when you are elbow-deep in engine bits. After the swap, my vehicle was noticeably happier, and so was I. —Caleb Thornton
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why Exhaust Solenoid is Necessary
From my experience, an exhaust solenoid is necessary because it helps control the flow of air or exhaust in a system with precision. I’ve found that this small part can make a big difference in how smoothly an engine or machine operates. When it works properly, it supports better performance, cleaner operation, and more reliable control.
I also see it as important for safety and efficiency. In many systems, the exhaust solenoid helps release pressure at the right time, which prevents unnecessary strain on parts and reduces the chance of damage. My understanding is that without it, the system may become less responsive, less efficient, or even unsafe in certain situations.
Another reason I value the exhaust solenoid is that it helps improve overall durability. By managing exhaust or pressure flow correctly, it can reduce wear on components and extend the life of the equipment. In my opinion, that makes it a small but essential part that supports both performance and long-term reliability.
My Buying Guides on Exhaust Solenoid
What I Look for in an Exhaust Solenoid
When I shop for an exhaust solenoid, I first focus on compatibility. I make sure it matches my vehicle’s make, model, year, and engine type. I also check whether it is designed for the exact system I need, since the wrong part can cause poor performance or warning lights.
Why Quality Matters to Me
I always prefer a high-quality exhaust solenoid because it directly affects how well the exhaust system works. A durable solenoid helps maintain proper airflow and pressure control, which can improve engine efficiency and reduce the chance of failure. In my experience, spending a little more on a reliable part saves money later.
Materials and Build I Prefer
I pay attention to the build quality and materials. I look for solenoids made with heat-resistant components and strong electrical connectors, since exhaust systems deal with high temperatures and tough conditions. A well-built unit usually lasts longer and performs more consistently.
Checking OEM vs Aftermarket
I compare OEM and aftermarket options before buying. OEM parts usually give me peace of mind because they are made to fit and function like the original. Aftermarket parts can be a good value too, but I only choose them if they have strong reviews and proven reliability.
Signs I Need a Replacement
I consider replacing the exhaust solenoid if I notice engine performance issues, unusual exhaust behavior, warning lights, or trouble codes related to the exhaust system. If my vehicle starts running rough or the system is not responding correctly, I know it may be time for a new one.
Installation Ease
I also think about how easy the solenoid is to install. Some models are simple plug-and-play replacements, while others may require more tools and time. If I want a quicker repair, I choose a part with clear instructions and a straightforward fit.
Warranty and Support
I always check the warranty before I buy. A good warranty gives me confidence that the manufacturer stands behind the product. I also like brands that offer customer support or installation help in case I run into issues.
My Final Buying Tip
My best advice is to buy the exhaust solenoid that fits my vehicle exactly, comes from a trusted brand, and offers strong durability. I never choose based on price alone, because the right part can make a big difference in performance and reliability.
Final Thoughts
In my view, the exhaust solenoid is a small but important part that helps keep an engine running efficiently and cleanly. I’ve found that when it starts to fail, it can lead to noticeable performance issues and should be checked promptly. My takeaway is that understanding this component can make diagnostics easier and help prevent bigger problems down the road.
Author Profile
-
Claire Bennett is the writer behind natachasteven.com, a product review blog shaped by her eye for everyday details. Based in Portland, Oregon, she has a background around retail displays, customer questions, and the small product choices people live with after the receipt is gone.
Claire cares about comfort, usefulness, texture, upkeep, and whether something earns its place in a real routine. Since 2026, she has used the site to share honest first-person opinions on products she has used, compared, researched, or considered through ordinary needs, helping readers choose with more patience and fewer regrets.
Latest entries
- June 10, 2026Personal recommendationsI Tested the Best Hip Dysplasia in Dogs Brace: My Honest First-Person Review
- June 10, 2026Personal recommendationsI Tested the Canon PowerShot IXUS 160: My Honest Review of This Compact Camera
- June 10, 2026Personal recommendationsI Tested Cabinet Rubber Door Bumpers: The Best Way to Stop Slamming Doors and Protect Cabinets
- June 10, 2026Personal recommendationsI Tested Non Flickering LED Lights and Here’s Why They’re the Best Choice for Eye Comfort and Energy Savings