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That hollow clunk when you shift into Drive and the steering-wheel buzz at every stoplight usually point to one worn part: the upper motor mount. It is the small bracket that keeps your engine from twisting under load, and when the rubber inside cracks, the whole powertrain thumps around the engine bay. Finding the right replacement means matching your exact engine code and transmission type, because a mount for a 3.6L GM will never fit a 1.8L Honda Civic.
I’m Mo Maruf — the founder and writer behind GoCarLife. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Whether you drive a Traverse, Civic, or Altima, the right upper motor mount restores quiet, stable acceleration without a dealership bill.
Our Picks at a Glance
How To Choose The Best Upper Motor Mount
An upper motor mount, sometimes called a torque strut, is the bracket that stops your engine from rocking side to side during acceleration and braking. When its rubber bushing collapses, you feel every shift as a thump and hear a knocking noise from under the hood. Choosing the right one starts with your vehicle’s year, engine displacement, and transmission type.
Match the Engine Code Before Anything Else
The single biggest mistake buyers make is trusting the car model alone. A 2009 Traverse with a 3.6L engine needs a completely different mount than a 2009 model with another displacement. Every mount here lists its OE reference numbers — strings like A5444 or 25840458 — so you can cross-check against your vehicle’s factory part number before you order.
Decide Between a Single Mount and a Full Set
If one mount has failed, the others are usually close behind because they share the same age and wear. A full kit costs more upfront but lets you replace the front, rear, and transmission mounts together, which balances the engine load and prevents the new part from wearing unevenly. A single mount is the cheaper fix if you just need to silence one obvious clunk.
Quick Comparison
| Model | Best For | Fitment | Kit Size | Weight | Amazon |
|---|---|---|---|---|---|
| Mardarth 4-Piece GM Kit★ Best Overall | Full vibration fix | 2009–2019 GM 3.6L | 4 mounts | 6.12 kg | Amazon |
| OCPTY A5444 StrutBest Value | Budget single mount | 2009–2017 GM 3.6L | 1 mount | 0.78 kg | Amazon |
| SHICHU A5833 Strut | Freestyle/Five Hundred | 05–07 Ford 3.0L CVT | 1 mount | — | Amazon |
| GM Genuine 25840458 | Factory-grade torque strut | 2009–2011 Traverse | 1 mount | 1.4 lb | Amazon |
| Mardarth 4-Piece Civic Kit | Honda Civic vibration | 2006–2011 Civic 1.8L | 4 mounts | 5.17 kg | Amazon |
| Yllshengyu 3-Piece Edge Kit | Ford Edge/MKX V6 | 2007–2015 Edge/MKX | 3 mounts | 6.36 kg | Amazon |
| BEBLEPANY 3-Piece Altima Kit | Nissan Altima 2.5L | 2019–2024 Altima | 3 mounts | — | Amazon |
In-Depth Reviews
1. Mardarth Engine Motor Mount Replacement 4-Piece Kit
Our pick — over 4.5★ from 450+ verified ratings; the strongest balance of quality and price.
The full-house cure for GM 3.6L shudder, replacing every tired mount in one go.
This kit attacks the whole problem instead of one symptom, packing a front motor mount, a rear motor mount, a rear torque strut, and a transmission mount into a single box. For 2009–2019 Traverse, Enclave, Acadia, and Saturn models on the 3.6L automatic, it is a direct bolt-on that needs no drilling or modification — buyers report their mechanics had no difficulty installing it and their 2016 Enclave “no longer shimmers and shakes.”
At 6.12 kg, this is the heaviest set here — roughly eight times the heft of the single OCPTY strut below, which makes sense because you are holding four complete metal brackets. The powder-coated finish and aluminum construction point to a part built to handle the constant twisting of a big V6. The recurring praise centers on quality and fit, with owners noting the old mounts were cracked and leaking before this swap smoothed everything out.
The honest trade-off is durability uncertainty: a few owners mention the mount failing within two months, and vibration results are split between “gone entirely” and “still present.” That mixed durability record is the reason to weigh this against a GM-branded part if you plan to keep the vehicle for many years.
Why owners pick it
- Complete 4-part coverage in one purchase
- Matches OEM part numbers A5548HY, A5549HY, A5444, A5458HY
- Powder-coated aluminum resists corrosion
- Bolt-on fit with no modifications
The durability asterisk
- Some owners saw failure within two months
- Vibration results are mixed, not universal
- Heavy kit at 6.12 kg
Reach for it if: you want to replace all four mounts at once and silence GM 3.6L vibration for good.
Think twice if: long-term durability is your top concern — the GM Genuine single strut below carries less warranty risk.
2. OCPTY Engine Motor Mount A5444 Torque Strut
A featherweight 0.78 kg strut that nails the fit on 3.6L GM crossovers.
If your clunk comes from just one worn strut, this single A5444 mount is the fast, low-cost fix. It matches the Buick Enclave, Chevrolet Traverse, GMC Acadia, and Saturn Outlook across the 2009–2017 model years, and the rubber mounting style soaks up normal engine movement. Customers note a “perfect match, perfect fitment” on a 2012 GMC Acadia SLT, with one noting improved steering feel right after install.
Compared to the 6.12 kg Mardarth kit above, this is a single purpose-built piece rather than a whole set — you buy it when you know exactly which strut is bad. Buyers describe it as decent quality at a reasonable price, though one flexed the material by hand and found it softer than expected. The fix is easy enough that even that owner would happily do it again.
What wins people over is the fit, which earns far more praise than any other aspect — a straight bolt-on that works as intended without drama. The main limitation is scope: one mount solves one problem, and if the other three are equally worn, you will be back under the car soon enough.
Bottom line: the cheapest way to kill a single GM strut clunk, provided you have confirmed the A5444 is the one that failed.
Best for: DIY owners who want a quick, low-cost replacement and can confirm their bad mount is the torque strut.
Look elsewhere if: you suspect multiple mounts are worn — a full set will save you a second round of labor.
3. SHICHU Motor Mount for 05-07 Freestyle A5833
The CVT-only torque strut that keeps a 3.0L Freestyle steady under throttle.
Ford’s 05–07 Freestyle, Five Hundred, and Mercury Montego with the 3.0L CVT transmission need this specific A5833 upper strut — and the listing is emphatic that it is a solid mount for the CVT, not the automatic trans. The alloy steel build and powder-coated finish give it a sturdy feel, and the one-year unlimited-mileage guarantee is a solid safety net for a part in this price range.
Reviewers point out the fit is perfect and the price is right, with most finding the part functions just like the factory original. But the critical caveat is compatibility: this mount has the highest mix of negative compatibility feedback in this list, meaning a few buyers ordered it for the wrong transmission or engine and had to return it. Check your exact trans type before checkout.
What wins people over is the quality — far and away the most-cited positive — followed by the precise fit. The catch is installation: several owners describe it as a hassle requiring an afternoon and a second pair of hands, and one reviewer noted the knocking got worse after install, likely a defective set. Measure twice, confirm your CVT, and this is a solid budget pick for an aging Ford.
Pick it if: you drive a 3.0L CVT Freestyle, Five Hundred, or Montego and want a low-cost factory-style strut.
skip it if: your car has the automatic trans — this solid mount will not fit it.
4. GM Genuine Parts 25840458 Engine Mount Strut
Factory-bred reliability in a 1.4 lb strut that bolts straight onto a Traverse.
When you want zero guesswork about quality, a genuine GM part is the safest bet — this one is manufactured to the exact OEM spec for fit, form, and function and built in the United States. On a 2009 Traverse it resolved front-end clunking and engine slop completely, and on a 2011 Traverse LS it ended random clunking in the front end. The alloy steel construction at 1.4 pounds is notably lighter than the aftermarket kits in this list.
The install is shade-tree friendly but not quick: shoppers say about an hour of work, and you must disconnect the negative battery cable first because the part sits under the fuse block on the passenger fender. The included components are just the single engine torque strut mount, so this is the right choice when you have diagnosed one specific failed part rather than a whole-set situation.
Quality and fit dominate the feedback, with the genuine OEM pedigree confirming the part matches factory standards. The only honest note is that a little molding splay inside the gaps appears on some units — purely cosmetic, and it does not affect how the mount functions at all.
The verdict: the premium pick for GM owners who would rather pay a bit more for factory-grade certainty than gamble on aftermarket longevity.
Best for: Traverse and Acadia owners who want a proven OEM component and are comfortable with a one-hour install.
Not ideal if: you need a full multi-mount kit — this is a single strut only.
5. Mardarth 4-Piece Motor Mount Kit for Honda Civic 1.8L
The 5.17 kg fix that erases Civic acceleration thump and idle vibration.
This kit is engineered exclusively for the 2006–2011 Honda Civic 1.8L with an automatic transmission — the listing is explicit that it will not fit 1.3L or 2.0L models. The four mounts replace part numbers A4530, A4534, A4543, and A4546, and the hydraulic design is what makes the difference: one owner’s old passenger-side mount literally fell out in two pieces, and after swapping in this set, the vibration and thump during acceleration were gone completely.
Owners describe the mounts as close to factory originals, with the engine running quietly after install. The powder-coated or painted finish and alloy steel build at 5.17 kg give it a substantial feel. Installation is straightforward with an impact wrench, though the single caution is not to overtighten the ground bolt on the upper dog bone — it can snap.
What wins people over is the combination of strong quality and effective vibration control, with buyers repeatedly noting the engine feels brand new afterward. The one caveat in the reviews is a split open end on one metal bracket, which looked like it might be factory-molded rather than a defect. For a 2006–2011 Civic owner, this is the complete, cost-effective cure.
What makes it work
- Hydraulic mounts damp vibration better than solid rubber
- Complete 4-mount coverage for full engine support
- Matches OEM codes A4530, A4534, A4543, A4546
- Buyers report near-factory quality
Watch points
- Only fits 1.8L automatic Civics
- One owner saw a split bracket end
- Ground bolt on the dog bone snaps if over-torqued
Reach for it if: your 1.8L auto Civic shudders on acceleration and you want to replace everything at once.
Think twice if: you drive a manual or a 1.3L/2.0L Civic — this kit will not bolt up.
6. Yllshengyu 3-Piece Mount Kit for Ford Edge & MKX
A matched 3-mount set, 6.36 kg of alloy steel, for Edge and MKX V6 smoothness.
This 3-piece set covers the rear torque strut, front motor mount, and transmission mount for the Ford Edge 2007–2014 3.5L and 2011–2014 3.7L, plus the Lincoln MKX 2007–2010 3.5L and 2011–2015 3.7L — automatic transmission only. The kit replaces a long list of OEM numbers including A5342, A5605, and A5431, so cross-referencing your factory part is easy. At 6.36 kg, it is the heaviest set in this lineup, reflecting the substantial V6 brackets.
Owners mention massive improvements: one 2017 Focus SEL had cabin vibration so bad it sounded like a missing muffler, and after swapping two top-access mounts, the improvement was huge and definitely worth the money. A 2012 Focus owner noted reduced vibration and a smoother engine with the passenger mount being the easy one and the driver-side trans mount requiring some careful alignment.
The fit earns the strongest praise, and customers note the value is strong compared to dealership costs. The honest caveat is mixed durability feedback — a few owners reported passenger-side and rear mounts breaking within a week, though the majority call the parts durable and good. As with any aftermarket set, the one-year quality guarantee is worth registering.
The read: a well-priced matched set that fixes Edge and MKX vibration properly — just be aware the durability reviews are split, not unanimous.
Best for: Edge and MKX owners replacing multiple worn mounts at once and wanting balanced engine support.
Not for: anyone needing just one specific mount, or owners outside the listed V6 model years.
7. BEBLEPANY 3-Piece Mount Set for Nissan Altima 2.5L
A 3-piece steel-and-rubber cure for 2019–2024 Altima 2.5L idle shake.
Built for the 2019–2024 Nissan Altima 2.5L four-cylinder sedan, this set covers the right engine mount, the right upper torque strut, and the rear lower torque strut. The solid steel brackets with durable rubber components are designed for day-to-day commuting, and the OE reference numbers — A4382, A4389, and A4390 — let you verify fitment before buying.
Reviewers point out a perfect fit and immediate results, with one noting the “shudder was gone” and the car driving like new after install. Another described solid material and an immediate improvement in vibration on startup and when shifting into Drive. The design intention is clear: replace all three mounts together to keep the engine load balanced and avoid uneven wear on fresh parts.
The fit earns consistent praise, but the quality picture is genuinely split — several buyers call it excellent for the price while others say you get what you pay for, with minor issues reappearing days after install. It is a budget-conscious option for a modern Altima, and the recommendation to replace all mounts at once is sound advice for avoiding repeat labor.
Pick it if: you want an affordable 3-mount refresh for your 2.5L Altima and are comfortable with an aftermarket part.
Think twice if: long-term durability is non-negotiable — the quality feedback here is genuinely mixed.
Understanding the Specs
OE Reference Numbers
Every mount carries a factory part code, like A5444 or 25840458, that matches the original bracket from the automaker. You find your vehicle’s code on the old part itself or in the repair manual, then cross-check it against the listing’s compatible numbers. This is the single most reliable way to avoid an incompatible order — far better than trusting the model year alone.
Hydraulic vs. Solid Rubber
Hydraulic mounts contain fluid inside the bushing, which absorbs low-frequency engine vibration more effectively than solid rubber — these appear in some kits here and are a favorite for silencing idle shake. Solid mounts use a single rubber block and are cheaper and simpler but pass more vibration into the cabin. For a daily driver, hydraulic is usually the more comfortable choice.
FAQ
How do I know which upper motor mount fits my car?
What is the difference between a torque strut and a motor mount?
Should I replace all motor mounts at once or just the broken one?
How long does it take to install an upper motor mount?
What tools do I need to replace a motor mount?
Why does my car still vibrate after replacing the mount?
Is a genuine OEM mount worth the extra cost?
Can a bad motor mount damage other parts of my car?
Final Thoughts: The Verdict
For most drivers, the upper motor mount winner is the Mardarth 4-Piece GM Kit because it delivers complete 4-mount coverage at a price that beats dealership labor. If you want the lowest-cost single-strut fix for a confirmed bad mount, grab the OCPTY A5444. And for GM owners who insist on factory-grade certainty with zero fitment guesswork, the GM Genuine 25840458 is the one to reach for.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of August 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, GoCarLife earns from qualifying purchases. This does not affect which products we feature.