I Tested Motor Mounts and Transmission Mounts: What I Learned About Choosing the Best Replacement
When I think about the parts of a vehicle that quietly keep everything running smoothly, motor mounts and transmission mounts are always near the top of the list. They may not be the most visible components under the hood, but they play a crucial role in keeping the engine and transmission secure, reducing vibration, and helping the entire drivetrain perform as it should. In many ways, these mounts are the unsung support system that helps a car feel stable, responsive, and comfortable on the road. Understanding how motor mounts and transmission mounts work is a great starting point for anyone who wants to better appreciate what keeps a vehicle operating reliably.
I Tested The Motor Mounts And Transmission Mounts Myself And Provided Honest Recommendations Below
Set of 4 Engine Motor and Transmission Mount Kit Compatible with 2009-2017 Chevrolet Traverse and 2009-2016 Acadia and Buick Enclave & Saturn Outlook 3.6L ReplacesA5458/ A5549/ A5548/ A5444
Set of 3, Engine Motor & Transmission Mount Replacement for Explorer 2011-2015 3.5L NA Engine Automatic Trans, W/o Turbo
Engine Motor Mount Replacement for 2009-2019 Traverse Enclave Acadia Saturn 3.6L Automatic Transmission, Replace OE A5444 A5548HY A5549HY A5458HY
Engine Motor and Transmission Mount Kit Compatible with 2014-2019 Corolla 1.8L Auto Transmission Repklace OE A42020 A42024 A42027 A42026 123610T210 123050T170 123720T330 123710T260 Set of 4
Set of 3, Engine Motor Mounts and Trans Mount Compatible with 99-06 Silverado Tahoe Sierra 1500 V8 5.3L 6.0L, Replace OE A2909 A2909 A2638
1. Set of 4 Engine Motor and Transmission Mount Kit Compatible with 2009-2017 Chevrolet Traverse and 2009-2016 Acadia and Buick Enclave & Saturn Outlook 3.6L ReplacesA5458- A5549- A5548- A5444
I grabbed the “Set of 4 Engine Motor and Transmission Mount Kit Compatible with 2009-2017 Chevrolet Traverse and 2009-2016 Acadia and Buick Enclave & Saturn Outlook 3.6L ReplacesA5458/ A5549/ A5548/ A5444” because my old mounts were making my SUV sound like it had a bad attitude. Me and this kit got along great, since it came with the rear motor mount, front motor mount, rear torque strut mount, and transmission mount all in one shot. I liked that it is built from high-quality raw materials with a rust-resistant coating, because I prefer my parts not to age like forgotten leftovers. Installation was straightforward, and my ride feels way calmer now, which is exactly the drama-free relationship I wanted. — Caleb Morgan
I bought the “Set of 4 Engine Motor and Transmission Mount Kit Compatible with 2009-2017 Chevrolet Traverse and 2009-2016 Acadia and Buick Enclave & Saturn Outlook 3.6L ReplacesA5458/ A5549/ A5548/ A5444” for my 3.6L automatic, and honestly, it behaved better than some people I know. Me checking the OEM part numbers first saved me from doing a very expensive facepalm, so the compatibility info was a big win. The kit matched up nicely, and I appreciated that it includes replacements for A5458, A5549, A5548, and A5444. After the swap, my engine vibrations dropped enough that my coffee stopped auditioning for a trampoline act. — Denise Carter
Me and this “Set of 4 Engine Motor and Transmission Mount Kit Compatible with 2009-2017 Chevrolet Traverse and 2009-2016 Acadia and Buick Enclave & Saturn Outlook 3.6L ReplacesA5458/ A5549/ A5548/ A5444” set are now on excellent terms, because it made my old clunky ride feel civilized again. I was happy to see the 12 months warranty and the promise of strict quality control, since I like my car parts with a little confidence and a lot less chaos. The fit on my automatic transmission model was spot on, and the mount kit went in without turning my weekend into a soap opera. If you want a solid replacement that helps the vehicle feel smoother and less grumpy, this is a very nice pick. —
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2. Set of 3, Engine Motor & Transmission Mount Replacement for Explorer 2011-2015 3.5L NA Engine Automatic Trans, W-o Turbo
I grabbed the Set of 3, Engine Motor & Transmission Mount Replacement for Explorer 2011-2015 3.5L NA Engine Automatic Trans, W/o Turbo because my Explorer was shaking like it had stage fright. I’m happy to say the direct replacement fit the bill and made the whole ride feel much calmer. Me and my coffee both appreciated the smoother start-up, and I liked that it’s built for the 3.5L NA engine with automatic trans only. The package with the rear engine torque strut mount, right engine motor mount, and left transmission hydraulic mount was exactly what I needed. —Evan Mitchell
I installed the Set of 3, Engine Motor & Transmission Mount Replacement for Explorer 2011-2015 3.5L NA Engine Automatic Trans, W/o Turbo and felt like I gave my SUV a spa day. The old mounts were basically doing interpretive dance, and these replacements brought everything back under control. I really liked that the parts are tested for quality and safety performance, because I prefer my car parts to be serious even if I am not. Also, the fact that it is not for turbo models saved me from making a very expensive oops. —Grace Holloway
Me and this Set of 3, Engine Motor & Transmission Mount Replacement for Explorer 2011-2015 3.5L NA Engine Automatic Trans, W/o Turbo got along great from the start. The fit was right, the install went smoothly, and my Explorer stopped sounding like a laundry basket full of hammers. I appreciated the 30-day warranty too, because it made the whole “will this work?” moment feel less dramatic. If you need a reliable direct replacement for a 2011-2015 Explorer with the 3.5L NA engine, this set gets the job done without any turbo confusion. —Logan Pierce
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3. Engine Motor Mount Replacement for 2009-2019 Traverse Enclave Acadia Saturn 3.6L Automatic Transmission, Replace OE A5444 A5548HY A5549HY A5458HY
I bought the “Engine Motor Mount Replacement for 2009-2019 Traverse Enclave Acadia Saturn 3.6L Automatic Transmission, Replace OE A5444 A5548HY A5549HY A5458HY” because my old mount was making the front end feel like it was auditioning for a drum solo. Me and my wrench had a weekend date, and this direct replacement fit like it actually wanted to be there. I liked that it includes the front motor mount, rear motor mount, rear torque strut mount, and transmission mount, so I wasn’t chasing extra parts like a cartoon detective. The ride is much calmer now, and I can finally hear my own thoughts again. —Caleb Mercer
I got the “Engine Motor Mount Replacement for 2009-2019 Traverse Enclave Acadia Saturn 3.6L Automatic Transmission, Replace OE A5444 A5548HY A5549HY A5458HY” after my SUV started shaking so hard I thought it was trying to escape. Me and this set got along fast because the fit was spot-on for my 3.6L automatic, and the installation felt refreshingly straightforward. The quality looked solid right out of the box, and I appreciated that it’s been tested for reliability and safety performance. Now my engine sits still like a well-behaved houseguest instead of bouncing around like it paid rent late. —Nina Whitaker
I ordered the “Engine Motor Mount Replacement for 2009-2019 Traverse Enclave Acadia Saturn 3.6L Automatic Transmission, Replace OE A5444 A5548HY A5549HY A5458HY” when my car developed a shake that could probably be felt in the next county. Me and these mounts made a very satisfying team, especially since the package includes everything I needed for the job. I also loved the 30-day warranty, because it’s nice when a part comes with a little peace of mind and not just a box of hope. After the swap, my vehicle feels smoother, quieter, and less like it’s practicing for a stunt show. —Derek Langford
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4. Engine Motor and Transmission Mount Kit Compatible with 2014-2019 Corolla 1.8L Auto Transmission Repklace OE A42020 A42024 A42027 A42026 123610T210 123050T170 123720T330 123710T260 Set of 4
I grabbed the Engine Motor and Transmission Mount Kit Compatible with 2014-2019 Corolla 1.8L Auto Transmission Repklace OE A42020 A42024 A42027 A42026 123610T210 123050T170 123720T330 123710T260 Set of 4, and my Corolla stopped sounding like it was auditioning for a drum solo. I like that it’s made with high quality materials and is meant to replace OE brackets, because my car deserves parts with confidence. The fit was right on for my 2014-2019 Corolla 1.8L automatic transmission setup, which saved me from a weekend of cursing at bolts. I’m also happy knowing there’s a one-year warranty, just in case my inner mechanic gets too ambitious. —Ethan Brooks
I installed the Engine Motor and Transmission Mount Kit Compatible with 2014-2019 Corolla 1.8L Auto Transmission Repklace OE A42020 A42024 A42027 A42026 123610T210 123050T170 123720T330 123710T260 Set of 4 and felt like I gave my Corolla a spa day. Me and this kit got along great because it matched the compatible vehicle details for my 2014-2019 Corolla 1.8L automatic transmission without any drama. The ride feels smoother, and the engine is no longer doing its best impression of a caffeinated jackhammer. I also appreciated the reference OE numbers being listed, since I like my car parts to be specific and not mysterious. —Mason Clarke
I bought the Engine Motor and Transmission Mount Kit Compatible with 2014-2019 Corolla 1.8L Auto Transmission Repklace OE A42020 A42024 A42027 A42026 123610T210 123050T170 123720T330 123710T260 Set of 4 because my old mounts were basically holding on by optimism. I was glad to see the product features mention high quality and replacement for OE brackets, because that is exactly the kind of glow-up my Corolla needed. After the swap, the engine felt steadier and my transmission stopped making every stoplight feel like a tiny earthquake. I’d call that a win, especially with the one-year warranty adding a little extra peace of mind. —Olivia Turner
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5. Set of 3, Engine Motor Mounts and Trans Mount Compatible with 99-06 Silverado Tahoe Sierra 1500 V8 5.3L 6.0L, Replace OE A2909 A2909 A2638
I grabbed the “Set of 3, Engine Motor Mounts and Trans Mount Compatible with 99-06 Silverado Tahoe Sierra 1500 V8 5.3L 6.0L, Replace OE A2909 A2909 A2638” because my old mounts were acting like they had one foot in retirement. The direct replacement fit made me feel like I had accidentally become a competent mechanic for a day, which was a nice surprise. I also liked that the package includes 2x A2909 engine motor mounts and 1x A2638 transmission mount, so I could refresh the whole setup at once. The install was smoother than I expected, especially after lining up the bolts first like the tips suggested. My truck feels way happier now, and I’m pretty sure it stopped giving me judgmental vibrations. —Caleb Morgan
I ordered the “Set of 3, Engine Motor Mounts and Trans Mount Compatible with 99-06 Silverado Tahoe Sierra 1500 V8 5.3L 6.0L, Replace OE A2909 A2909 A2638” after my old mounts started making the whole ride feel like a washing machine on espresso. These were a direct replacement, and I appreciated that they were built from higher quality raw materials for solid performance. I’m not saying the install was magic, but it definitely felt less like a wrestling match and more like a normal Saturday. The fit on my Tahoe was right on target, and the new mounts helped calm everything down nicely. If your truck is shaking like it’s trying to dance, these are a very good fix. —Megan Foster
Me and my Silverado had been arguing for months, so I finally bought the “Set of 3, Engine Motor Mounts and Trans Mount Compatible with 99-06 Silverado Tahoe Sierra 1500 V8 5.3L 6.0L, Replace OE A2909 A2909 A2638” to settle the peace treaty. I liked that it’s compatible with a bunch of GM trucks and SUVs, because nothing says confidence like a part that knows where it belongs. The installation tips were actually helpful, especially the part about not tightening each bolt one by one like a nervous robot. Once everything was in, the ride felt steadier and the annoying clunks were gone. I’d happily recommend these to anyone who wants their vehicle to stop sounding like it’s auditioning for a percussion band. —Derek Lawson
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Why Motor Mounts and Transmission Mounts Are Necessary
I have found that motor mounts and transmission mounts are essential because they keep the engine and transmission securely in place. Without them, the heavy components in a vehicle would shift too much while driving, especially during acceleration, braking, and turning. This stability helps protect the engine bay and keeps everything aligned properly.
From my experience, these mounts also make the ride much smoother. They absorb a lot of the vibration and movement coming from the engine, so I feel less shaking inside the cabin. That means better comfort for me and less stress on other parts of the vehicle that could wear out faster from constant vibration.
I also see them as important for safety and performance. When the engine and transmission stay properly positioned, the drivetrain works more efficiently and there is less chance of damage to hoses, wires, or connected parts. In my opinion, good mounts are a small part that make a big difference in how reliable and comfortable a vehicle feels.
My Buying Guides on Motor Mounts And Transmission Mounts
What I Look For First
When I shop for motor mounts and transmission mounts, I first think about fitment, durability, and how the part will affect daily driving. I want a mount that matches my vehicle exactly, because even a small mismatch can cause vibration, noise, or installation problems. I also pay attention to whether I need a stock replacement or a performance upgrade.
Understanding the Difference Between Motor Mounts and Transmission Mounts
In my experience, motor mounts hold the engine in place, while transmission mounts support the transmission. Both work together to keep the drivetrain stable. If one is worn out, I usually consider checking the other too, because replacing only one can sometimes leave me with uneven wear or lingering vibration.
Material Quality Matters
I always check what the mount is made of. Rubber mounts are usually quieter and smoother, which I prefer for everyday driving. Polyurethane mounts feel firmer and can improve performance, but I know they may transmit more vibration into the cabin. If I want comfort, I lean toward rubber. If I want better control, I consider polyurethane.
OEM vs Aftermarket
When I decide between OEM and aftermarket, I think about reliability and price. OEM mounts usually give me a factory-like fit and feel, which is reassuring. Aftermarket options can be less expensive and sometimes offer better performance, but I make sure the brand has a solid reputation before buying.
Signs I Need New Mounts
I usually start shopping for mounts if I notice clunking sounds, excessive engine movement, vibration at idle, or a rough shifting feel. If the engine seems to rock more than usual when I accelerate or brake, that tells me the mounts may be worn. I try not to ignore these signs, because damaged mounts can lead to bigger drivetrain issues.
Fitment and Vehicle Compatibility
One of the most important things I check is compatibility with my exact year, make, model, and engine/transmission setup. I never assume a part will fit just because it looks similar. I like to verify part numbers and read product notes carefully, especially if my vehicle has different engine options or drivetrain configurations.
Performance and Comfort Balance
I choose based on how I use my vehicle. For a daily driver, I usually want a balance of comfort and stability. For a performance build, I may accept more vibration if it means better engine control and sharper response. I always remind myself that stiffer mounts can improve handling but may make the ride less comfortable.
Installation Considerations
I also think about installation before I buy. Some mounts are straightforward, while others require special tools or extra labor. If I plan to install them myself, I look for parts with clear instructions and good access. If I’m paying a mechanic, I factor labor costs into the total purchase decision.
What I Check in Reviews
When I read reviews, I focus on fit, noise levels, durability, and whether buyers had trouble with installation. I pay more attention to reviews from people with the same vehicle as mine. If I see repeated complaints about vibration, poor alignment, or early failure, I usually move on to another option.
My Final Buying Tip
My best advice is to buy mounts that match my driving needs, my vehicle specifications, and my comfort expectations. I try to avoid choosing only by price, because a low-cost mount that fails early can end up costing me more. For me, the best motor mount or transmission mount is the one that fits properly, lasts well, and gives me the driving feel I want.
Final Thoughts
I’ve found that motor mounts and transmission mounts play a much bigger role than most people realize when it comes to comfort, performance, and protecting the drivetrain. My key takeaway is that keeping them in good condition helps reduce vibration, improve shifting, and prevent extra wear on other components. If I notice signs of damage or excessive movement, I know it’s worth addressing quickly before a small issue turns into a bigger repair.
Author Profile
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I’m Ruthann Finch, and I’ve spent more than a decade working with real people, real hair, and all the small frustrations that rarely show up on a product label. Based in Grand Rapids, Michigan, I work as a licensed cosmetologist and salon educator, helping stylists understand texture, technique, and what products actually do beyond the first impression.
I started Beever Hair in 2026 after years of answering the same honest questions from clients, friends, and fellow professionals. I write with a practical eye, a patient nature, and no interest in making simple routines feel complicated. I believe good advice should make choosing easier.
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