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Choosing the right engine mount for your Mazda CX-9 matters for both daily comfort and long-term drivetrain health. A poor fit or low-quality mount can increase vibration, accelerate wear on surrounding components, and affect overall driving feel. This guide covers seven shortlisted engine mounts that fit the Mazda CX-9 and explains the practical reasons each type made our list. We evaluated mounts for fitment accuracy, material durability, and vibration isolation to help you narrow options based on how you use your vehicle. Read on for the factors that should guide your choice and the mounts that met our selection criteria.
Looking for other parts? See all Mazda CX-9 parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | ONNURI Engine and Transmission Mount Kit for 2010-2012 Mazda CX-9 3.7L (3-piece) |  |
| Best quality Built to a higher standard if you want something more solid | A-Premium 3‑Piece Engine and Transmission Mount Kit for Mazda CX-9 (2007–2012) |  |
| Best Value The sweet spot between price and what you get | PartsFlow Engine & Transmission Mount Set (3 Piece) for 2010-2012 Mazda CX-9 3.7L |  |
| Best Budget The cheapest option that still gets the job done reliably | RATCHROLL Front Engine Torque Strut Mount for Mazda CX-7/CX-9 2.5L |  |
| Highest Rated A top-rated pick with lots of positive feedback | Marketplace Auto Parts Engine Mount Kit for 2010–2012 Mazda CX-9 (3.7L V6) |  |
| Most popular A crowd favorite that many people choose with confidence | Mardarth Set of 3 Engine and Transmission Mounts for 2010-2012 Mazda CX-9 3.7L Auto |  |
| Best Seller A high-volume bestseller chosen again and again | 4M Auto Parts 3‑Piece Engine & Transmission Mount Kit for Mazda CX-9 |  |
1. ONNURI Engine and Transmission Mount Kit for 2010-2012 Mazda CX-9 3.7L (3-piece)
| Fitment | 2010-2012 Mazda CX-9 3.7L Automatic Transmission |
|---|---|
| Kit contents | 1 Motor Mount, 1 Torque Strut Mount, 1 Transmission Mount |
| Material Type | Alloy Steel |
| Part Interchange Info | EM7004, A4419, A4425 |
| Manufacturer Warranty Description | Five year warranty, one time replacement for parts |
This ONNURI three-piece mount kit replaces the motor mount, torque strut mount, and transmission mount on 2010–2012 Mazda CX-9 with the 3.7L automatic. Intended as a direct-fit factory-replacement style set, the kit uses alloy steel construction with rubber interfaces to restore engine stability and reduce vibration transmitted to the cabin. Install is typical for replacement mounts and is done during routine engine/transmission service or when worn mounts cause clunking, vibration, or misalignment. The included interchange numbers and OEM-style fitment information simplify matching to the original parts. Practical benefits include improved engine steadiness under acceleration and a quieter ride compared with severely worn mounts, plus a five-year replacement warranty for parts. Limitations are that installation can require lifting and alignment tools and professional labor if you are not experienced, and the kit is a direct replacement rather than a performance-oriented or heavy-duty upgrade for aggressive towing or modified engines.
Best for: Balanced owners who want a reliable, factory-style replacement set to restore ride comfort and drivetrain stability on a 2010–2012 Mazda CX-9 3.7L without upgrading to heavy-duty parts.
Less Ideal for: Drivers planning significant engine upgrades, heavy towing, or track use should consider reinforced performance mounts instead of this direct-replacement kit.
- Complete 3-piece kit covers motor mount, torque strut, and transmission mount for a single install session
- Designed to match factory interchange numbers for straightforward fitment to 2010–2012 CX-9 3.7L automatics
- Alloy steel construction for durability with rubber damping to reduce cabin vibration
- Includes a five year replacement warranty on parts providing long-term coverage
- Not a reinforced or performance mount; not intended for high-horsepower or heavy towing modifications
- Installation may require lift, alignment, or professional labor for correct fitment
Verdict: A complete, factory-style three-piece mount kit that restores engine stability and reduces vibration for 2010–2012 Mazda CX-9 3.7L automatics.
2. A-Premium 3‑Piece Engine and Transmission Mount Kit for Mazda CX-9 (2007–2012)
| Fitment | Mazda CX-9 2007–2012 V6 automatic (3.5L, 3.7L) |
|---|---|
| Set contents | Front right motor mount, rear engine shock mount, transmission mount |
| Material type | Alloy steel, aluminum, rubber |
| Manufacturer warranty description | One year unlimited-mileage quality guarantee |
This A-Premium kit replaces the front right motor mount, a rear engine shock mount, and the transmission mount for Mazda CX-9 V6 automatic models. It is used to restore engine alignment and reduce vibration and drivetrain movement that develop as factory mounts age. The kit combines metal brackets and rubber isolators and is marketed as meeting factory-spec dimensions after endurance testing. In practice the mounts fit the listed CX-9 applications and, when installed, reviewers report reduced engine jerk and vibration under acceleration. The set includes the specific pieces needed for a fuller mount refresh so mechanics can swap the most common failing points in one job. Limitations are that this is an aftermarket kit so finish and minor fitment adjustments may be required during installation, and one report noted a missing thread on a component that required extra machining. The product comes with a one-year unlimited-mileage guarantee that covers the part itself but not installation costs.
Best for: Performance-oriented buyers who want factory-quality handling of engine movement and reduced vibration to restore smoothness and responsiveness in a Mazda CX-9.
Less Ideal for: Drivers looking for a simple single-part replacement or a lifetime warranty on parts; those who prefer dealer-sourced factory parts may want to consider alternatives.
- Full kit covers front right motor mount, rear engine shock mount, and transmission mount so multiple worn points can be replaced at once
- Designed and tested to match factory-spec performance to reduce engine vibration and jerking
- Metal brackets with rubber isolators offer a balance of durability and NVH control
- Includes manufacturer one-year unlimited-mileage guarantee on parts
- As an aftermarket kit it may need minor fitment tweaks during installation
- One reported unit had a missing threaded hole requiring repair before installation
Verdict: A comprehensive, performance-focused mount kit that restores engine stability and reduces vibration for Mazda CX-9 V6 models, though minor fitment checks may be needed during installation.
3. PartsFlow Engine & Transmission Mount Set (3 Piece) for 2010-2012 Mazda CX-9 3.7L
| Compatibility | 2010-2012 Mazda CX-9 3.7L |
|---|---|
| Set Name | Engine & Transmission Mount Set (3 Piece) |
| Material Type | Rubber |
| Unit Count | 3.0 Count |
This PartsFlow three-piece mount set replaces the engine and transmission mounts on 2010–2012 Mazda CX-9 3.7L vehicles and installs as a direct factory-quality replacement with no modification required. Made from rubber, the components are intended to reduce engine vibration and noise while maintaining normal drivetrain alignment; the listing highlights antifreeze-rated rubber for better cold-weather durability. Typical use is a full mount refresh when worn mounts cause excessive vibration, drivetrain movement, or engine noise. The set covers front and transmission mount positions so you can replace multiple aging mounts at once rather than buying parts individually. Expect straightforward bolt-in fitment when matched to the stated compatibility, but note rubber mounts will not eliminate vibration as completely as stiffer performance or hydraulic aftermarket options. For drivers focused on restoring quiet, predictable operation without complexity, this set balances cost and usability well.
Best for: Practical optimizers who want a cost-effective, straightforward repair that restores quiet and drivability without upgrades or complicated installation.
Less Ideal for: Drivers seeking aggressive vibration isolation or performance-oriented mounts should look at specialty hydraulic or performance options instead.
- Direct-fit replacement for 2010–2012 Mazda CX-9 3.7L, designed for bolt-in installation
- Three-piece set lets you replace multiple worn mounts at once for consistent feel
- Rubber construction reduces engine noise and vibration in normal driving
- Antifreeze-rated rubber improves performance and longevity in cold climates
- Rubber mounts are less effective at isolating vibration than hydraulic or sport mounts
Verdict: An affordable, direct-fit three-piece mount set that restores quieter, more stable operation for 2010–2012 Mazda CX-9 3.7L owners.
4. RATCHROLL Front Engine Torque Strut Mount for Mazda CX-7/CX-9 2.5L
| Fitment | Mazda CX-9 2010-2015, Mazda CX-7 2010-2012 2.5L |
|---|---|
| Part number | TD11-39-040D / TD11-34-80XA / TD11-34-80XB / TD11-34-80XD |
| Material | Rubber and steel |
| Package contents | 1 x Engine Torque Strut Mount |
This front engine torque strut mount is a budget-friendly replacement intended for Mazda CX-7 2.5L (2010–2012) and Mazda CX-9 2.5L (2010–2015). It secures the engine to the chassis and uses rubber with steel components to absorb engine torque and limit movement, which reduces drivetrain vibration and associated cabin noise. Typical installation replaces a worn or cracked OEM mount; it is supplied as a single piece and fits the listed model years and engine. The practical benefit is noticeably smoother idling and less transmission of engine shake into the cabin when the original mount has deteriorated. As a value option it focuses on fit and function rather than upgraded materials or noise isolation beyond factory expectations. Buyers should confirm fitment before purchase since this is marketed for specific Mazda 2.5L applications and does not include additional mounts or hardware beyond the single unit.
Best for: Budget-conscious Mazda owners seeking an economical, functional repair to restore engine stability and reduce vibration without paying dealer prices.
Less Ideal for: Shoppers looking for performance upgrades, heavy-duty reinforcement, or a full set of engine mounts should consider higher-end or multi-piece options instead.
- Direct-fit replacement for listed Mazda CX-7 and CX-9 2.5L model years
- Rubber-and-steel construction provides dependable vibration dampening
- Supplied as a single complete torque strut mount for straightforward swap
- Affordable budget option compared with dealership replacements
- Sold as one mount only so additional engine mounts are not included
- No claims of enhanced durability or upgraded materials versus factory parts
Verdict: An inexpensive, direct-fit front torque strut mount that restores engine stability and reduces cabin vibration for specified Mazda CX-7 and CX-9 2.5L model years.
5. Marketplace Auto Parts Engine Mount Kit for 2010–2012 Mazda CX-9 (3.7L V6)
| Compatible Vehicles | 2010–2012 Mazda CX-9 3.7L V6 |
|---|---|
| Set Contents | Front mount, front-right mount, rear torque strut |
| Material Type | Alloy Steel, Aluminum |
This three-piece engine mount kit replaces the front, front-right and rear torque strut mounts on 2010–2012 Mazda CX-9 models with the 3.7L V6. It is sold as a matched set so you can swap all primary mounts at once, which helps restore engine alignment and reduces vibration after age-related wear. The parts are listed as alloy steel and aluminum construction, suggesting a durable, rust-resistant build suitable for everyday driving and towing loads typical of a family SUV. Installation is the usual under-car work that requires basic tools and lift access or ramps; replacing all three mounts together is practical to avoid repeating labor. Limitations include that this is an aftermarket marketplace kit so fit and finish may vary compared with factory-quality replacements, and you should verify fit for your exact trim before purchase. For a reliability-focused owner wanting a straightforward full-mount refresh, this kit covers the common failure points on the CX-9 V6 without the hassle of sourcing individual pieces.
Best for: Buyers prioritizing long-term reliability and a complete mount refresh for their Mazda CX-9 V6 who prefer replacing all primary mounts in one service. This suits owners who value restoring smoothness and preventing repeat labor over sourcing individual parts piecemeal.
Less Ideal for: If you want an exact factory-spec replacement with branded OEM provenance or need mounts for a different engine or model year, consider a factory-quality alternative or verified OEM parts.
- Sold as a matched three-piece set to replace all main engine mounts at once
- Materials listed as alloy steel and aluminum for corrosion resistance and strength
- Direct-fit compatibility specified for 2010–2012 Mazda CX-9 3.7L V6 trims to simplify selection
- Aftermarket marketplace part so finish and tolerances may not exactly match factory-quality components
- Requires typical under-vehicle access and mechanical skill or shop labor to install
Verdict: A practical, full three-piece mount kit that restores engine stability on 2010–2012 Mazda CX-9 V6s, best for owners focused on reliability rather than strict OEM matching.
6. Mardarth Set of 3 Engine and Transmission Mounts for 2010-2012 Mazda CX-9 3.7L Auto
| Compatibility | 2010-2012 Mazda CX-9 3.7L AUTO |
|---|---|
| Included components | Engine Motor & Transmission Mount (3 count) |
| Manufacturer | Mardarth |
| Replace part numbers | A4419, A4425, 4449, EM7004, EM9537, EM9507 |
This Mardarth kit provides the three engine and transmission mounts commonly replaced on the Mazda CX-9 3.7L (2010–2012) and is sold as a matched set to simplify repairs. Each mount is intended to replace the factory pieces referenced by part numbers like A4419, A4425 and EM7004, so the kit covers front right engine, rear left transmission and torque strut positions used during a typical mount refresh. Buyers report straightforward installs when measurements and fit are correct, and the manufacturer highlights higher-grade raw materials and testing aimed at meeting factory-spec performance. Practical benefits include replacing worn mounts in a single job to restore smoother shifting and reduce vibration, and the matched set avoids part-mismatch headaches. Limitations to note are potential fitment variation on some vehicles and the recommendation for professional installation if you lack tools or experience, since alignment and torque matter for drivability and durability.
Best for: Convenience-driven buyers who want a single, vehicle-specific kit to replace all common mounts at once and minimize trips to parts suppliers or multiple orders.
Less Ideal for: If you prefer dealer-sourced factory replacement parts or need mounts for a different model year or engine, this aftermarket kit is not the right choice.
- Sold as a three-piece matched kit to replace multiple worn mounts in one service visit
- Listed compatibility explicitly for 2010–2012 Mazda CX-9 3.7L automatic, reducing part-search time
- Manufacturer states parts underwent quality and safety performance testing and uses higher-grade raw materials
- Multiple customer reports of improved vibration and shifting after installation
- Some buyers reported fitment issues where one or more mounts did not fit their vehicle exactly
- Installation requires mechanical knowledge and proper tools to ensure correct alignment and torque
Verdict: A convenient matched three-piece aftermarket mount kit for 2010–2012 Mazda CX-9 owners who want a single replacement solution to restore driveline smoothness, but check fit carefully and plan for professional installation if unsure.
7. 4M Auto Parts 3‑Piece Engine & Transmission Mount Kit for Mazda CX-9
| Brand | 4M Auto Parts |
|---|---|
| Manufacturer Part Number | 10103 9507 9537 |
| OEM Part Number | TD11-39-070C |
| Position | Left, Right |
This 3-piece kit from 4M Auto Parts replaces the left transmission mount, right hydraulic engine mount, and rear torque strut for Mazda CX-9 V6 models. It is intended for direct replacement of the factory mounts on 2008–2015 CX-9s with the first-design 3.7L engine and also lists fitment to earlier 3.5L CX-9s. Typical installation swaps the three mounts to restore proper engine positioning, reduce vibration transmitted to the body, and maintain drivetrain alignment. Notable features include a hydraulic right engine mount to help dampen vibration and a torque strut to control engine movement under acceleration. The practical benefits are a straightforward way to address clunks, excessive vibration, or visible engine sag without replacing individual mounts separately. Limitations are that this is an aftermarket kit so fit and finish can vary versus factory parts and it may require basic mechanical skill and standard tools for installation; additional brackets or hardware are not included in the product title if your vehicle uses them. The listing covers multiple part references for cross‑check and is best used when restoring ride comfort and drivetrain feel on the specified CX-9 models.
Best for: Risk-averse mainstream buyers who prioritize restoring factory-like NVH control and drivetrain alignment on their Mazda CX-9 rather than shopping piece-by-piece.
Less Ideal for: Buyers seeking an exact factory part from a dealer or those who prefer replacing a single mount at a time to diagnose which specific mount is failing.
- Complete three-piece kit replaces both key engine supports and the torque strut for a coordinated repair
- Includes a hydraulic right engine mount that helps reduce cabin vibration compared with solid mounts
- Designed to match factory fitment references for direct replacement on specified Mazda CX-9 models
- Aftermarket parts can show variation in fit or finish compared with factory-quality components
- Installation requires mechanical ability and basic tools; professional installation may be needed if brackets or hardware differ
Verdict: A practical aftermarket three-piece mount kit that restores engine support and reduces vibration on specified Mazda CX-9 V6 models, with typical aftermarket fit and installation considerations.
Choosing the Right Mazda CX-9 Engine Mount: Key Factors to Consider
Material and Construction
The materials used in an engine mount determine how it handles loads, heat, and exposure to fluids. Rubber, hydraulic, and polyurethane constructions each have distinct damping and longevity characteristics, so understanding those tradeoffs helps you match a mount to driving style and environmental conditions.
A mount with reinforced metal brackets and corrosion-resistant coatings will generally outlast one with thinner hardware. Pay attention to bonding quality between elastomers and metal, since delamination is a common failure mode. Material choice also affects NVH, so heavier-duty mounts may reduce movement but can transmit more vibration into the cabin.
Fitment and Compatibility
Correct fitment is essential to avoid undue stress on fasteners and drivetrain components. A mount that matches the Mazda CX-9's factory mounting points and torque specifications will align the engine properly and prevent secondary issues like misaligned driveshafts or accessory belt strain.
Check whether the mount is listed for the exact model year and engine variant of your CX-9. Compatibility also influences installation time and the need for special tools. Opting for a mount with clear fitment documentation reduces the chance of returns and additional labor.
Vibration Isolation and Ride Comfort
One of the main jobs of an engine mount is to absorb and isolate engine vibration from the vehicle structure. The mount's stiffness and damping profile determine how much engine movement is allowed and how much vibration reaches the cabin.
Softer mounts typically yield a smoother, quieter ride but may permit more engine movement under load. Stiffer mounts can improve perceived engine control and throttle response but may increase transmitted noise. Match the mount's isolation characteristics to your priorities, whether that is comfort during daily driving or firmer control for spirited use.
Durability and Environmental Resistance
Engine mounts sit in a harsh environment of heat, oil, road salt, and mechanical stress. Durability depends on material resilience to ozone, heat aging, and chemical exposure. Look for mounts with materials rated for high temperatures and with protective coatings on metal parts.
Longevity also relates to design features such as fluid-filled chambers in hydraulic mounts and reinforced bushings that resist tearing. Robust mounts reduce the frequency of replacements and lower lifetime maintenance impacts.
Installation and Serviceability
Installation complexity affects labor time and total repair hassle. Some mounts are designed for straightforward bolt-on replacement using common tools, while others require engine support or partial disassembly of adjacent components.
Consider whether the mount uses standard fasteners and if torque specs are available. Service-friendly designs that allow you to reuse factory hardware or that come with clear instructions help reduce installation errors and ensure safe reassembly.
Warranty and Support
A clear warranty provides confidence in the mount's expected lifespan and the manufacturer's quality control. Warranties often vary by length and what they cover, for example defects in materials or premature failure under normal use.
Support resources such as installation guides, technical hotlines, and readily available replacement parts can be important if you encounter issues. A strong warranty combined with accessible support can offset slightly higher upfront cost by reducing long-term risk.
How We Chose the Best Mazda CX-9 Engine Mount
We focused on mounts that provide reliable fitment and effective vibration control specific to the Mazda CX-9 platform. Key evaluation criteria included material construction and durability, which affect how a mount resists wear and environmental exposure; fitment accuracy and OEM compatibility, since correct alignment reduces stress on adjacent components; vibration isolation performance, measured by expected reduction in noise and harshness under typical driving loads; and ease of installation, covering access to mounting points and whether common tools suffice. We also considered manufacturer quality control indicators such as warranty terms and documented testing, plus replacement-part availability in common repair channels. We excluded options that required extensive vehicle modification, mounts not explicitly designed for the Mazda CX-9, and products with insufficient documentation on materials or fit. The result is a curated list of mounts that balance durability, comfort, and straightforward installation for this specific vehicle.
Our full evaluation process is outlined in our review methodology.
FAQ
What are common symptoms of a failing engine mount on a Mazda CX-9?
Common signs include increased vibration felt through the cabin, especially at idle, and noticeable engine movement during acceleration or gear changes. You may also hear clunks or bangs when shifting from drive to reverse or when accelerating hard. These symptoms often prompt visual inspection for cracked rubber or loose fasteners.
Can I replace a Mazda CX-9 engine mount myself?
Many mounts can be replaced at home if you have basic mechanical skills, an appropriate jack or engine support, and the correct tools. Some mounts necessitate supporting the engine while removing fasteners, so following torque specs and safety procedures is important. If access is tight or special tooling is required, professional installation is usually faster and safer.
How long do engine mounts typically last?
Lifespan depends on driving conditions and mount type, but mounts often last several years or tens of thousands of miles. Frequent exposure to harsh conditions, like heavy towing or extreme temperatures, can shorten service life. Regular inspection helps catch deterioration before it causes additional damage.
Does installing a stiffer mount reduce engine vibration?
A stiffer mount can reduce engine movement and improve perceived control, but it may transmit more vibration to the cabin. The effect depends on the mount's damping design and the vehicle's isolation characteristics. Choose a balance between stiffness and damping that matches your comfort versus performance priorities.
What should I expect during an engine mount replacement service?
A typical replacement involves supporting the engine, removing the old mount, installing the new mount with correct alignment, and torquing fasteners to specification. The service may require temporary removal of adjacent components to access mounting points. After installation, it is common to recheck fastener torque and inspect for proper engine alignment.
Are aftermarket mounts suitable for the Mazda CX-9 compared with OEM options?
Aftermarket mounts can offer good value and sometimes enhanced features, but quality varies. The important aspects are fitment accuracy, material quality, and documented testing. Evaluate aftermarket options based on these criteria and consider warranty coverage and installation support when deciding between aftermarket and OEM-style mounts.
Conclusion
Prioritize fitment accuracy, material durability, and the mount's vibration isolation profile when choosing an engine mount for a Mazda CX-9. Consider how you use the vehicle and whether ride comfort or firmer engine control is the primary goal, since each choice involves tradeoffs between movement control and cabin noise. Also factor in installation complexity and warranty support to minimize long-term maintenance. Focusing on these criteria will help you select a mount that balances comfort, longevity, and serviceability for your specific needs.
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