Upgrade your Honda or Acura drivetrain with the Innovative Mounts 90620 Steel Passenger-Side Engine Mount, designed as a performance replacement for the factory right-hand engine mount found in the 2002–2006 Acura RSX and 2002–2005 Honda Civic Si/Type-R EP3.

Engineered for vehicles equipped with Honda K-Series engines, the Innovative Mounts 90620 is compatible with supported manual and automatic transmission applications, making it a versatile replacement for enthusiasts looking to improve drivetrain stability without purchasing a complete engine mount kit.

Factory engine mounts utilize rubber and, in some applications, fluid-filled damping components to minimize vibration. Over time, these components can deteriorate, crack, leak, or separate, allowing excessive engine movement during acceleration, deceleration, and shifting.

The Innovative Mounts 90620 replaces the factory-style rubber mounting arrangement with a durable steel mount assembly featuring performance polyurethane bushings. This design helps reduce unwanted engine movement, maintain consistent drivetrain positioning, and improve overall drivetrain responsiveness.

Featuring solid steel construction, a protective powder-coated finish, and Innovative Mounts' no-tear polyurethane bushing design, the 90620 is an excellent upgrade for daily-driven performance vehicles, modified K-Series engines, and dedicated motorsport applications.

The mount also includes a billet engine-side post mount, providing the supporting mounting component specified by Innovative Mounts for this application.

Important: Part number 90620 is an individual passenger-side engine mount assembly, not a complete engine mount kit or engine swap conversion kit.

Features

• Direct-Replacement Design: Replaces the factory passenger-side engine mount on compatible Acura RSX and Honda Civic EP3 applications.

• 2002–2006 Acura RSX Compatibility: Designed for supported RSX Base and Type-S models.

• 2002–2005 Honda Civic Si/Type-R Compatibility: Fits supported EP3 chassis applications.

• K-Series Engine Compatibility: Designed for compatible Honda K-Series engine configurations.

• Manual and Automatic Transmission Support: Compatible with supported factory manual and automatic transmission applications.

• Passenger-Side Mounting Position: Replaces the factory right-hand engine mount.

• Solid Steel Construction: Durable mounting components engineered for performance applications.

• Powder-Coated Finish: Helps protect steel mounting components against corrosion.

• Billet Post Mount Included: Includes the billet engine-side mounting component specified by Innovative Mounts.

• Performance Polyurethane Bushings: Provide increased resistance to drivetrain movement compared with conventional rubber mounts.

• No-Tear Bushing Design: Engineered to minimize excessive engine movement while providing vibration isolation.

• Improved Drivetrain Stability: Helps control unwanted engine rocking during acceleration.

• Reduced Mount Deflection: Maintains more consistent engine positioning under load.

• Improved Drivetrain Response: Firmer mounting can provide a more connected drivetrain feel.

• Potential Wheel Hop Reduction: Reduced excessive drivetrain movement may help minimize wheel hop.

• Multiple Bushing Hardness Options: Available in 75A, 85A, and 95A configurations.

• Individual Mount Replacement: Allows upgrading the passenger-side mount without purchasing an entire mount kit.

• Complete Kit Compatibility: Used in Innovative Mounts' compatible RSX and Civic EP3 replacement mount systems.

• Lifetime Warranty: Backed by Innovative Mounts' lifetime warranty, subject to manufacturer terms.

Popular Performance Applications

Acura RSX Base and Type-S Performance Builds

Provides firmer passenger-side engine mounting for compatible RSX applications equipped with Honda K-Series engines.

Honda Civic Si EP3 Upgrades

Replaces the factory right-hand engine mount with a performance-oriented polyurethane mounting solution.

Naturally Aspirated K-Series Builds

Suitable for vehicles equipped with upgraded intake manifolds, headers, camshafts, and other naturally aspirated performance components.

Turbocharged K-Series Applications

Helps control excessive engine movement in properly configured forced-induction applications.

Daily-Driven Performance Vehicles

The 75A bushing option provides a balance between increased drivetrain rigidity and vibration isolation for street-oriented builds.

Autocross and Road Racing

Reduced mount deflection helps maintain more consistent engine positioning during acceleration, braking, and cornering.

Drag Racing Applications

Firmer polyurethane bushings help resist excessive drivetrain movement during aggressive launches.

Worn Factory Mount Replacement

An ideal upgrade when the original rubber or fluid-filled engine mount has deteriorated, separated, or begun allowing excessive engine movement.

Additional Information

• Manufacturer: Innovative Mounts
• Part Number: 90620
• Product Type: Passenger-Side Engine Mount
• Mounting Position: Right / Passenger Side
• Vehicle Application: 2002–2006 Acura RSX / 2002–2005 Honda Civic Si/Type-R
• Chassis Compatibility: DC5 / EP3
• Engine Compatibility: Honda K-Series
• Transmission Compatibility: Manual or Automatic
• Mount Construction: Steel
• Finish: Powder-Coated
• Engine-Side Post Mount: Billet Post Mount Included
• Bushing Material: Performance Polyurethane
• Available Bushing Hardness Options: 75A / 85A / 95A
• OEM Replacement References: 50821-S6M-013 / 50820-S6E-E02
• Complete Manual Mount Kit Reference: Innovative Mounts 90650
• Complete Automatic Mount Kit Reference: Innovative Mounts 90651
• Billet Aluminum Alternative: Innovative Mounts B90620
• Manufacturer-Listed Weight: Approximately 6 lbs
• Warranty: Manufacturer Lifetime Warranty, Subject to Terms

Available Polyurethane Bushing Hardness Options

75A – Black – Street / Performance

The softest available bushing option for the 90620.

Recommended for performance-oriented street vehicles where improved drivetrain stability is desired while retaining some vibration isolation.

Manufacturer horsepower guidance: approximately 250–400 HP.

85A – Grey – Performance / Race

Provides increased drivetrain rigidity for modified engines, aggressive driving, and competition applications.

Manufacturer horsepower guidance: approximately 400–500 HP.

95A – Red – Extreme Race

The stiffest available polyurethane option, intended for high-output engines and dedicated racing applications.

Manufacturer horsepower guidance: 500+ HP.

These horsepower ranges are manufacturer selection guidelines rather than guaranteed load ratings.

Important: Increasing bushing hardness generally increases noise, vibration, and harshness transmitted into the vehicle cabin. Select the appropriate bushing based on the vehicle's intended use and desired comfort level.

Innovative Mounts 90620 vs. B90620 vs. 90650

Innovative Mounts 90620: Steel passenger-side engine mount for compatible Acura RSX and Honda Civic EP3 applications with manual or automatic transmissions.

Innovative Mounts B90620: Billet aluminum version of the passenger-side replacement mount.

Innovative Mounts 90650: Complete steel replacement engine mount kit for supported manual-transmission Acura RSX and Honda Civic EP3 applications.

Innovative Mounts 90651: Steel replacement mount kit for supported automatic-transmission applications.

The 90620 is an excellent choice when replacing or upgrading only the passenger-side engine mount.

Common Reasons for Replacement

• Cracked Factory Rubber: Aging rubber can deteriorate and allow excessive engine movement.

• Leaking Factory Mount: Fluid-filled OEM mounts can lose their damping effectiveness if damaged.

• Separated Mount Bushing: Worn factory mounts may develop excessive movement under load.

• Excessive Engine Rocking: Firmer polyurethane helps control unwanted drivetrain movement.

• Clunking During Acceleration: A worn engine mount may allow excessive movement that results in noticeable drivetrain noise.

• Vibration From a Damaged Mount: Failed factory mounts can allow abnormal engine movement and vibration.

• Reduced Drivetrain Stability: Performance polyurethane helps maintain more consistent engine positioning.

• Performance Engine Upgrades: Modified K-Series engines can benefit from firmer drivetrain mounting.

• Track and Racing Applications: Provides increased mount rigidity for demanding driving conditions.

• Individual Mount Replacement: Allows replacement of the passenger-side mount without purchasing a complete mount kit.

Installation Notes

1. Verify Vehicle Compatibility: Confirm that the vehicle is a supported 2002–2006 Acura RSX or 2002–2005 Honda Civic Si/Type-R EP3.

2. Confirm Engine Configuration: Verify that the vehicle is equipped with a compatible Honda K-Series engine and engine-side mounting arrangement.

3. Verify Mounting Position: The 90620 replaces the right-hand/passenger-side engine mount.

4. Inspect the Existing Mount: Check the factory mount for cracked rubber, fluid leakage, separation, corrosion, or excessive movement.

5. Support the Engine: Properly support the engine and transmission before removing the original passenger-side mount.

6. Remove the Factory Mount: Follow the applicable Honda or Acura service procedures.

7. Inspect Mounting Locations: Check the chassis mounting points and engine-side mounting bracket for damage or corrosion.

8. Install the Supplied Billet Post Mount: Follow Innovative Mounts' instructions for the engine-side post mount included with the assembly.

9. Position the Innovative Mounts 90620: Install the replacement mount in the original passenger-side mounting location.

10. Verify Mount Alignment: Ensure the mount and engine-side bracket are properly aligned without excessive preload or binding.

11. Install the Required Hardware: Use the hardware specified by Innovative Mounts and reuse applicable factory fasteners where instructed.

12. Torque Mounting Fasteners: Follow the applicable factory service manual and Innovative Mounts installation instructions.

13. Inspect Engine Clearance: Verify that the engine does not contact surrounding chassis components.

14. Check for Additional Vibration: Some increase in vibration is normal when upgrading from factory rubber mounts to performance polyurethane.

15. Perform a Final Inspection: Verify proper mounting alignment and secure hardware before operating the vehicle.

16. Recheck After Initial Use: Inspect the mount and mounting hardware after the initial driving period.

Important: Innovative Mounts advises that installed mounts showing bolt impressions cannot be returned or exchanged. Confirm fitment before installation.

Professional installation is recommended.

What's Included

The Innovative Mounts 90620 includes:

• 1 × Passenger-Side Steel Engine Mount Assembly

• 1 × Billet Engine-Side Post Mount

• Performance Polyurethane Bushing in the selected hardness configuration

Additional Information

This listing is for the individual passenger-side engine mount assembly only.

The following components are not included unless separately specified:

• Driver-side transmission mount

• Rear engine mount

• Front engine mount

• Complete Innovative Mounts 90650 or 90651 mount kit

• Engine or transmission components

• Additional mounting hardware not specified by the manufacturer

Verify the exact supplied hardware against the manufacturer packaging and installation instructions.

Upgrade your Acura RSX or Honda Civic Si with the Innovative Mounts 90620 Steel Passenger-Side Engine Mount, engineered for 2002–2006 Acura RSX DC5 and 2002–2005 Honda Civic Si/Type-R EP3 applications equipped with compatible Honda K-Series engines.

Featuring durable steel construction, a protective powder-coated finish, an included billet engine-side post mount, and performance polyurethane bushings, the 90620 provides improved drivetrain stability and reduced excessive engine movement compared with worn factory rubber mounts.

Whether you're replacing a deteriorated OEM mount, upgrading a daily-driven K-Series vehicle, or preparing for aggressive track use, Innovative Mounts delivers a dependable performance mounting solution.