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Swapping or upgrading an engine mount on a Honda Civic Si can noticeably change how the car feels and responds. A solid mount reduces vibration in the cabin, keeps drivetrain alignment correct, and helps preserve other components from excess stress. For Civic Si owners who want a quieter, more composed daily driver or a dependable fix after a worn mount, choosing the right option matters.This guide covers six shortlisted engine mounts chosen for their fitment, construction, and expected longevity specifically for the Honda Civic Si. We evaluate each pick using serviceability, material quality, and real-world fitment to help you decide which mount matches your goals. Read on to see how these mounts compare on durability, NVH control, and installation considerations.
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Top Picks at a Glance
| Best Overall The best all-around choice for most situations | OMNI5 5-Piece Engine and Transmission Mount Kit for 2006–2011 Honda Civic Si Coupe Manual |  |
| Best Quality Built to a higher standard if you want something more solid | AJP Distributors Billet Aluminum Engine Mount Kit with Polyurethane Bushings |  |
| Best Value The sweet spot between price and what you get | CF Advance Engine Motor Mount Set 4PCS for 2006–2011 Honda Civic Si 2.0L |  |
| Best Budget The cheapest option that still gets the job done reliably | WFLNHB Rear Engine Mount FDRR-70A for Honda Civic Si 2.0L 2006–2011 |  |
| Highest Rated A top-rated pick with lots of positive feedback | Hasport 62A Upper Pitch Motor Mount for 2006–2015 Civic Si |  |
| Most Popular A crowd favorite that many people choose with confidence | labwork Rear Lower Engine Mount FDRR70A for Honda Civic Si 2006–2011 |  |
1. OMNI5 5-Piece Engine and Transmission Mount Kit for 2006–2011 Honda Civic Si Coupe Manual
| Compatibility | 2006-2011 Honda Civic Si 2.0L Coupe Manual Transmission |
|---|---|
| Set Contents | 2 motor mounts, 2 torque strut mounts, 1 transmission mount |
| Material Type | Alloy Steel |
| Manufacturer Warranty Description | 5 year Warranty, One Time Replacement |
This OMNI5 kit supplies the common wear items you would replace when engine movement becomes noticeable: two motor mounts, two torque strut mounts, and one transmission mount sized for the 2006–2011 Civic Si 2.0L coupe with a manual gearbox. Constructed from alloy steel, the set is intended as a direct-fit replacement using listed interchange numbers so installation follows factory locations and mounting points. For a DIY mechanic the kit simplifies a full-mount refresh in one purchase and restores tighter engine control, reduced vibration, and crisper throttle response compared with aged, softened mounts. The inclusion of both upper and lower torque struts addresses side-to-side and fore-aft control. Keep in mind this is a factory-replacement style kit rather than a performance or solid-mount upgrade, so it prioritizes comfort and NVH reduction over track-focused stiffness. Also the listing provides basic parts IDs and a five-year one-time replacement warranty but limited detail on hardware or bushings may require checking local fit confirmation before purchase.
Best for: Buyers looking for a straightforward, factory-style replacement to restore normal engine stability and reduce vibration on a 2006–2011 Civic Si coupe with a manual gearbox.
Less Ideal for: Drivers seeking performance-oriented, stiffer mounts for track use or those who need mounts for other Civic configurations or model years should look at specialty options.
- Complete 5-piece set covers both motor mounts, torque struts, and the transmission mount so you can replace all worn mounts at once
- Uses OEM-compatible interchange numbers to simplify fitment for the specified Civic Si application
- Alloy steel construction provides durable replacement compared with deteriorated factory rubber components
- Product description has limited detail on bushing material and included hardware which may require verification before installation
Verdict: Choose this OMNI5 five-piece kit when you want a complete, factory-style replacement to restore engine stability and reduce vibration on a 2006–2011 Civic Si coupe manual.
2. AJP Distributors Billet Aluminum Engine Mount Kit with Polyurethane Bushings
| Compatible vehicles | 2006-2011 Civic Si (Manual Transmission Only) |
|---|---|
| Manufacturer | AJP Distributors |
| Manufacturer part number | MM-020RD-AMA-L1 |
This kit replaces the factory motor mounts with billet aluminum brackets and polyurethane bushings to tighten engine movement and present a cleaner engine-bay look. Intended for manual-transmission 2006–2011 Civic Si models, the mounts are typically used to reduce drivetrain lash and improve throttle response feel for spirited driving. The billet components appear solid and the polyurethane bushings are stiffer than factory rubber, which translates to crisper engine feedback and less power loss through flex when accelerating. Installation is not beginner-friendly and several buyers report trimming or test-fitting certain pieces and that alignment can be difficult, so professional installation or strong mechanical skill is recommended. Expect increased vibration and noise transferred to the cabin compared with stock mounts; enthusiasts will appreciate the sharper connection while daily drivers may find it harsher. The kit improves control and engine feel for performance setups but requires patience at fitment and acceptance of added NVH.
Best for: Enthusiasts who prioritize sharper engine response and reduced drivetrain movement for spirited driving or track days and who are willing to accept increased vibration and doensider hands-on installation.
Less Ideal for: Drivers seeking a quiet, comfortable daily commute or those without tools or experience for tricky fitment should choose a softer, more OEM-like replacement instead.
- Billet aluminum brackets offer a rigid, durable replacement for stock mounts
- Polyurethane bushings provide stiffer engine control and crisper throttle feel
- Designed specifically for 2006–2011 Civic Si manual-transmission models
- Requires trimming or modification in some installs and can have alignment issues
- Increases vibration and noise compared with factory mounts
- Installation can be difficult and may need professional help
Verdict: Buy this kit if you want a firmer, more direct engine connection and improved throttle feel on a 2006–2011 Civic Si and accept extra vibration and careful installation.
3. CF Advance Engine Motor Mount Set 4PCS for 2006–2011 Honda Civic Si 2.0L
| Brand Name | CF Advance |
|---|---|
| Model Number | CF-M4820 |
| Set Name | Engine Motor Mount Set 4PCS |
| Compatible Vehicles | 2006-2011 Honda Civic Si 2.0L L4 |
This CF Advance four-piece engine motor mount kit replaces the front right mount, front upper torque strut, lower torque strut, and front mount on 2006–2011 Honda Civic Si 2.0L cars. It is intended as a direct factory-quality replacement for worn rubber mounts and torque struts, restoring engine stability and reducing vibration and movement under acceleration. Installation is typical for engine mounts and will require lifting support and basic hand tools; the set covers the common front-mount locations so you can replace all critical points in one job. The listing notes materials and testing aimed to meet factory-spec performance, which suggests acceptable durability for daily driving and spirited use; buyers should still expect slightly different NVH characteristics compared with new factory parts because aftermarket mounts can vary in compound and stiffness. This kit is practical for owners tackling a comprehensive mount refresh rather than swapping individual pieces over time.
Best for: Buyers who want a practical, all-in-one replacement to restore engine stability and eliminate vibration on a 2006–2011 Civic Si without sourcing multiple parts separately.
Less Ideal for: If you are seeking performance-upgrade mounts with stiffer compounds for track use or custom NVH tuning, this factory-replacement style kit is not the right choice.
- Complete four-piece set replaces all primary front mounts and torque struts so you can do a single comprehensive repair
- Marketed and tested to meet factory-spec performance for reliable day-to-day driving
- Covers specific OEM part references for straightforward fitment on the listed Civic Si models
- Aftermarket rubber/compound may not exactly match factory vibration characteristics so slight differences in noise and feel are possible
Verdict: A convenient four-piece, factory-replacement mount kit that lets Civic Si owners replace all front mounts at once to restore engine stability and reduce vibration.
4. WFLNHB Rear Engine Mount FDRR-70A for Honda Civic Si 2.0L 2006–2011
| Fitment | Honda Civic Si Coupe/Sedan 2.0L 2006-2011 |
|---|---|
| Material Type | Alloy Steel, Aluminum |
| Manufacturer Part Number | 1-8650345-843933 |
| Item Count | 1.0 Count |
This WFLNHB rear engine mount is a budget-focused replacement for the Honda Civic Si 2.0L (2006–2011) that aims to restore engine stability and reduce drivetrain movement. Constructed from alloy steel and aluminum with a polished finish, it installs in place of the factory rear mount and is intended to firm up shifts and reduce engine rocking under load. In real-world use you should expect firmer throttle response and less visible engine movement, though several buyers report the part may need minor trimming or fitting work before it bolts into position. The mount is rated around a 70A hardness level, so cabin vibration at certain RPMs is possible compared with softer factory mounts. Build quality appears solid for the price, but fitment and some added vibration are consistent points in user feedback. This makes it a sensible value option if you want to tighten engine movement without spending much, provided you are comfortable doing light modification during installation.
Best for: Buyers wanting an inexpensive, firmer replacement mount to reduce engine movement and improve shift feel who are willing to do minor fitting or modification themselves.
Less Ideal for: Drivers seeking a direct-fit, no-modification replacement or those who prioritize the quietest possible cabin NVH should consider higher-end or factory-spec alternatives.
- Made from alloy steel and aluminum for durability
- Designed specifically to fit Honda Civic Si 2.0L 2006–2011 application
- Stiffer 70A-style mount improves shift feel and limits engine movement
- Polished/brushed finish for a cleaner under-hood appearance
- May require trimming or modification to fit correctly
- Can transmit more vibration into the cabin at certain RPM ranges
Verdict: A low-cost, durable rear mount that tightens engine movement and shift feel for Civic Si owners who can handle light fitting work.
5. Hasport 62A Upper Pitch Motor Mount for 2006–2015 Civic Si
| Fits | 2006-2015 Honda Civic Si |
|---|---|
| Material Type | 62A |
| Included Components | Motor mount |
| Manufacturer Part Number | FGUPR |
This Hasport upper pitch mount replaces the factory upper motor mount with a stiffer 62A material aimed at keeping the engine and transmission more tightly located in the chassis. It is typically used by owners adding power or who want firmer drivetrain response; by reducing engine roll the mount helps limit wheel hop and lets the car put torque down more consistently during hard acceleration. The mount is a bolt-in style component intended for the 2006–2015 Civic Si platform and arrives unfinished in aluminum material for a straightforward install and long service life. The practical benefits are improved traction under load and a more connected feel during spirited driving without complex modification. Expect increased vibration and drivetrain harshness at idle compared with softer mounts, so daily comfort will be a bit firmer. Fitment is specific to the Civic Si platform and this part is best used where reliability under higher torque loads is the priority.
Best for: Buyers who prioritize reliable, stronger engine location to support added power or spirited driving and want a robust, vehicle-specific upgrade that improves traction and drivetrain control.
Less Ideal for: Drivers who prioritize a smooth, quiet daily commute or low vibration at idle should consider softer factory-style replacements instead.
- Stiffer 62A material reduces engine movement for better traction under acceleration
- Made in USA construction and unfinished aluminum housing for durability
- Direct-fit design for 2006–2015 Civic Si simplifies installation
- Helps reduce wheel hop when adding power to the platform
- Firmer mount increases vibration and harshness at idle and low speeds
Verdict: Choose this mount if you want a durable, vehicle-specific upgrade that tightens engine control to improve traction and reliability when increasing power on a 2006–2015 Civic Si.
6. labwork Rear Lower Engine Mount FDRR70A for Honda Civic Si 2006–2011
| Fitment | Honda Civic Si Coupe/Sedan 2.0L 2006-2011 |
|---|---|
| Placement on Vehicle | rear, lower |
| Material | aluminium alloy |
| Part Number | FDRR-70A |
This labwork rear lower engine mount is a direct replacement designed to secure the engine to the chassis on 2006–2011 Honda Civic Si models. Made from aluminum alloy, it replaces the factory rear lower mount and is intended to restore engine alignment and reduce movement. Installation is straightforward for a competent home mechanic and the part is offered as a one-piece assembly that bolts into the existing bracket. In use it should reduce engine yaw and cut down on driveline vibration compared with a worn mount, but several owner reports highlight fitment problems that required trimming or pressing the bushing to fit and in some cases left altered engine angle or residual vibration. Build material is lightweight aluminum rather than stamped steel, which helps corrosion resistance but may affect long-term durability compared with heavier aftermarket performance mounts. If it fits cleanly it gives a budget way to renew a failing mount, but expect to verify part numbers and inspect fit closely during installation.
Best for: Buyers wanting a low-cost replacement to restore engine positioning and reduce movement on a 2006–2011 Civic Si who will inspect fitment carefully and can perform or oversee installation.
Less Ideal for: Shoppers seeking a precision performance or lifetime solution or those unwilling to handle minor fitting work should consider higher-end or guaranteed-fit options instead.
- Designed as a direct replacement for 2006–2011 Honda Civic Si rear lower mount
- Aluminum alloy construction resists corrosion and is lightweight
- Sold as a single assembly that can be installed with basic mechanical skills
- Several user reports of poor fitment requiring trimming or pressing to install
- May alter mounting angle or leave residual vibration if not fitted precisely
Verdict: A budget replacement rear lower mount that can restore engine positioning on 2006–2011 Civic Si models if you verify fit and are prepared to address minor installation adjustments.
Choosing the Right Honda Civic Si Engine Mount: Key Factors to Consider
Fitment and Vehicle-Specific Compatibility
Correct fitment is the single most important factor for Civic Si engine mounts. A mount engineered for the Civic Si will align bolt holes, stud locations, and bracket geometry so installation is straightforward and the engine sits in the intended position. Incorrect geometry can alter drivetrain angles and lead to premature wear of adjacent components.
When evaluating fitment, look for mounts that explicitly reference the Honda Civic Si configuration and match the chassis details of your specific model year range if applicable. Proper fitment reduces the need for adapters or modification, which keeps installation time and risk of errors lower.
Material Construction and Durability
The materials used determine how a mount performs over time. Quality engine mounts combine robust metal brackets with rubber or elastomer compounds designed to resist heat, oil, and ozone exposure. Reinforced rubber or multi-layered elastomers provide a balance of stiffness and damping, helping the mount resist cracking or separation.
Also consider plated or stainless mounting hardware to resist corrosion, especially in climates with road salt. Durable construction minimizes the chance of failure and reduces the frequency of engine mount replacement for the Civic Si.
Vibration Damping and NVH Control
How a mount manages noise, vibration, and harshness directly affects cabin comfort. Softer mounts reduce transmitted vibration and improve ride comfort during idle and light throttle, while stiffer mounts can improve perceived throttle response but increase vibration and noise.
Choose a mount whose damping characteristics match your priorities: comfort-oriented elastomers for daily driving, or firmer designs if you prioritize a more connected feel with some additional vibration. Pay attention to documented engine mount symptoms vibration and noise behaviors when researching options.
Torque Load Capacity and Mount Design
Engine torque and transmission reaction forces place varying loads on mounts during acceleration and deceleration. Mounts designed to handle those torque loads feature reinforced mounting points, larger studs, or internal sleeves that distribute force and resist elongation.
For the Civic Si, consider torque-rated features or torque mount style designs if you experience excessive engine movement under hard acceleration. Adequate torque capacity prevents undue stress on mounts and adjacent parts, reducing long-term maintenance issues.
Serviceability and Installation Considerations
Ease of installation can save time and reduce labor costs if you or a technician will replace the mount. Look for mounts that use standard fastener sizes and do not require extensive disassembly of surrounding components. Clear instructions, included hardware, and compatibility with common tools are practical benefits.
If professional installation is planned, check typical engine mount installation cost factors such as labor time and access requirements. If you intend to perform engine mount replacement yourself, prioritize mounts with straightforward procedures and clear torque specifications.
Warranty and Support
A solid warranty indicates manufacturer confidence and provides protection against early failure. Warranty terms vary by provider and may cover material defects or premature separation. For Civic Si owners, warranty coverage gives assurance for normal driving conditions and can influence overall value.
Also consider available technical support and installation resources such as diagrams or video guides. Responsive support helps resolve fitment questions and can be helpful if you encounter unexpected challenges during installation.
Common Symptoms of a Failing Engine Mount
Recognizing engine mount problems early helps prevent secondary damage. Typical motor mount signs include increased vibration at idle, noticeable engine movement under acceleration, clunking or banging noises when shifting or during rapid throttle changes, and visible deterioration of the rubber or mounting hardware. Some symptoms are subtle and develop gradually, while others appear suddenly if a mount fails catastrophically.
- Idle vibrations that get worse over time
- Clunking or banging during acceleration or when shifting gears
- Visible cracks, separation, or oil-soaked rubber on the mount
- Engine tilting or shifted position in the engine bay
How Mount Choice Affects Driveability on the Civic Si
The Civic Si balances sporty responsiveness with everyday comfort, so mount selection will influence both NVH and perceived drivetrain connection. A softer mount improves cabin refinement and reduces engine mount noise transmitted to the chassis, making daily commutes more comfortable. Conversely, a stiffer mount limits engine movement and can make throttle transitions feel more immediate, which some drivers prefer during spirited driving.
Choosing the right compromise depends on how you use the car. If you do occasional track days or prefer sharper throttle feel, a firmer mount may be appropriate. If you prioritize a smooth ride and lower cabin vibration during city driving, prioritize mounts with better damping characteristics.
- Softer mounts favor comfort and reduced cabin vibration
- Stiffer mounts favor sharper feel but can increase noise and vibration
Installation Tips Specific to the Civic Si
Plan for safe engine support before removing mounts. Even when changing a single mount, supporting the engine with a jack and a suitable block under the oil pan or using an engine support bar prevents damage to other mounts or components. Follow torque specifications for fasteners to avoid overtightening or under-tightening which can cause post-install vibration or failed studs.
If replacing multiple mounts, replace any worn companion mounts at the same time to maintain correct alignment. Inspect surrounding brackets, transmission mounts, and hardware; replacing corroded bolts and using new locking hardware improves long-term reliability.
- Support the engine securely before unbolting mounts
- Use manufacturer torque specs for fasteners
- Replace companion mounts if they show wear
When to Repair Versus Replace
Minor surface cracking or small tears in the rubber may be repairable in the very short term, but most service situations call for replacement to restore proper damping and alignment. Replacement eliminates uncertainty about remaining rubber integrity and prevents repeat visits shortly after a repair.
If the mount bracket or hardware is bent, corroded, or shows evidence of separation, replace rather than repair. Replacing worn mounts in pairs or groups can restore proper engine geometry and reduce stress on new components.
- Temporary repairs are not a long-term solution
- Replace mounts with structural damage or extensive rubber degradation
- Consider replacing companion mounts in the same service interval
Still looking for the perfect fit?
Select your Honda Civic configuration to see the most relevant Engine Mounts recommendations
How We Chose the Best Honda Civic Si Engine Mount
Our selection process focused on what matters most to Honda Civic Si owners replacing or upgrading an engine mount. We prioritized precise vehicle-specific fitment, using compatibility checks for the Civic Si configuration and common 5-speed or 6-speed layouts where applicable. Durability was assessed by looking at material construction such as reinforced rubber compounds, bonded metal brackets, and vibration-dampening design features that influence long-term service life.Serviceability was another filter: mounts that allow straightforward access and use common fastener patterns scored higher. NVH performance, including how well a mount controls idle and driveline vibration, was judged by reported user feedback and technical descriptions of damping characteristics. We also weighed corrosion resistance of mounting hardware and the presence of torque-rated studs or sleeves relevant to engine torque loads.Excluded from consideration were universal mounts that require extensive modification, and designs intended for racing-only use that sacrifice comfort for extreme stiffness. The final list balances fitment, longevity, noise and vibration control, and realistic installability for typical Civic Si owners.
Our full evaluation process is outlined in our review methodology.
FAQ
How long do engine mounts typically last on a Civic Si?
Mount life varies with driving style and conditions but often ranges from 5 to 10 years. Aggressive driving, frequent hard launches, and exposure to oil or road chemicals can shorten lifespan, while conservative use extends it.
Can I drive with a bad engine mount for a short time?
You can drive a short distance with a failing mount, but continued driving risks additional damage to adjacent components and may increase vibration and noise. Have the mount inspected and replaced promptly to avoid further issues.
Are torque mounts necessary for Civic Si owners who autocross or track the car?
Many drivers who frequently push the Civic Si hard prefer mounts with higher torque load capacity because they limit engine movement under heavy acceleration. The tradeoff is usually increased vibration and noise during regular driving, so choose based on your balance of track use and street comfort.
What are common signs that an engine mount is failing?
Common signs include increased idle vibration, clunking noises during acceleration or shifting, visible rubber deterioration, and unusual engine movement. Some symptoms, like subtle vibration, can be mistaken for other issues, so inspect mounts when these signs appear.
Will replacing one mount fix all vibration issues?
Replacing a single worn mount can resolve some vibration problems but not always. If other mounts are also degraded, the remaining worn mounts can still transmit vibration. Inspect all mounts and replace companion units as needed to restore proper damping.
Do I need special tools to replace a Civic Si engine mount?
Basic hand tools, a torque wrench, and a safe means to support the engine are usually sufficient. Some installations may require removal of obstructing components or use of an engine support bar, but most home mechanics can complete the job without specialized shop equipment.
Final Verdict
Prioritize correct fitment and the damping characteristics that match how you use your Civic Si. Durable construction and adequate torque load capacity help prevent repeat service and protect surrounding drivetrain components. If you value a quieter, more comfortable ride, favor mounts with better NVH control; if you seek a more connected throttle feel for spirited driving, consider designs with higher stiffness.Ultimately, choose a mount that balances serviceability, longevity, and the level of vibration you find acceptable. Replacing worn mounts promptly and following proper installation practices will restore alignment and comfort so you can get the most out of your Honda Civic Si.
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