Upgrade your K-Series drivetrain with the Innovative Mounts B90620 Billet Aluminum Passenger-Side Engine Mount, designed for compatible 2002–2006 Acura RSX and 2002–2005 Honda Civic Si EP3 applications.

The B90620 replaces the factory passenger-side engine mounting component with a performance-oriented billet aluminum mount featuring a polyurethane bushing. Designed to reduce excessive engine movement, this mount provides improved drivetrain stability during acceleration, deceleration, and shifting.

Factory Honda and Acura engine mounts are engineered to balance drivetrain support with passenger comfort. Over time, the original rubber mounting components can deteriorate, crack, or lose their ability to effectively control engine movement. This becomes especially noticeable in vehicles equipped with performance modifications, higher-output engines, or more aggressive clutch setups.

The Innovative Mounts B90620 addresses these concerns with a rigid billet aluminum mounting structure and performance polyurethane bushing designed to maintain more consistent engine positioning under load.

Reduced engine movement can help improve drivetrain response, minimize unwanted engine rocking, and reduce some forms of wheel hop associated with excessive mount deflection.

The billet aluminum construction also provides a premium appearance, making the B90620 an attractive upgrade for enthusiasts seeking improved performance and a cleaner, more detailed engine bay.

Whether you're replacing a worn factory passenger-side engine mount, upgrading a naturally aspirated K20 build, or preparing a turbocharged RSX or EP3 for more demanding driving conditions, the Innovative Mounts B90620 provides a durable, performance-focused mounting solution.

Features

• Passenger-Side Engine Mount: Replaces the corresponding factory passenger-side engine mounting component.

• 2002–2006 Acura RSX Compatibility: Designed for compatible DC5 chassis applications.

• 2002–2005 Honda Civic Si Compatibility: Supports compatible EP3 chassis applications.

• K-Series Engine Compatibility: Intended for supported Honda K-Series engine configurations.

• Billet Aluminum Construction: Offers a premium machined alternative to conventional factory mounting components.

• Performance Polyurethane Bushing: Helps control excessive drivetrain movement.

• Improved Engine Stability: Reduces unwanted engine rocking during acceleration and deceleration.

• Reduced Mount Deflection: Helps maintain more consistent drivetrain positioning under load.

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

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

• Performance Street and Track Applications: Suitable for modified vehicles using an appropriate bushing hardness.

• Individual Mount Replacement: Ideal for replacing a worn passenger-side mount without purchasing an entire mount kit.

• Premium Engine Bay Appearance: Billet aluminum construction complements performance engine bay upgrades.

Popular Performance Applications

Acura RSX Engine Mount Replacement

Replaces an aging or damaged factory passenger-side engine mount with a billet aluminum performance alternative.

Honda Civic Si EP3 Performance Builds

Provides improved engine mounting rigidity for compatible EP3 applications.

Naturally Aspirated K20 Builds

Suitable for K20 engines equipped with performance intake manifolds, headers, camshafts, and other upgrades.

Turbocharged K-Series Applications

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

Daily-Driven Performance Vehicles

A softer polyurethane bushing configuration can provide improved drivetrain control while retaining some vibration isolation.

Autocross and Road Racing

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

Drag Racing Applications

Firmer mounting helps resist excessive engine movement during aggressive launches.

Individual Mount Replacement

Provides an alternative to replacing an entire engine mount kit when only the passenger-side mount requires attention.

Additional Information

• Manufacturer: Innovative Mounts
• Part Number: B90620
• Product Type: Billet Aluminum Passenger-Side Engine Mount
• Vehicle Application: 2002–2006 Acura RSX / 2002–2005 Honda Civic Si
• Chassis Compatibility: DC5 / EP3
• Engine Compatibility: Compatible Honda K-Series
• Mounting Position: Passenger-Side Engine Mount
• Mount Construction: Billet Aluminum
• Bushing Material: Performance Polyurethane
• Installation Type: Replacement Engine Mount
• Quantity: One Passenger-Side Engine Mount

Polyurethane Bushing Selection

Innovative Mounts offers performance mounting systems with different polyurethane bushing hardness options. Confirm the available B90620 configurations when selecting the mount.

60A – Street

A softer performance bushing option intended to improve drivetrain stability while limiting additional vibration.

75A – Performance Street

A firmer option for modified street vehicles and occasional track use.

85A – Race

Designed for applications where greater drivetrain rigidity is preferred over passenger comfort.

95A – Extreme Race

A very firm polyurethane configuration intended for aggressive motorsport use.

Important: Increasing bushing hardness generally increases noise, vibration, and harshness transmitted into the passenger cabin. Select the appropriate configuration based on vehicle use and acceptable vibration levels.

Benefits of Billet Aluminum Construction

The B90620 uses billet aluminum construction to provide a strong, performance-oriented alternative to conventional factory engine mounting components.

Billet aluminum offers a premium machined appearance while allowing the mount to be engineered around the required chassis and engine mounting geometry.

When combined with performance polyurethane bushings, the mount helps maintain consistent drivetrain positioning under demanding driving conditions.

Individual Mount vs. Complete Engine Mount Kit

The Innovative Mounts B90620 is an individual passenger-side engine mount.

It is intended for customers replacing or upgrading the passenger-side mounting position rather than purchasing a complete engine and transmission mount kit.

Other drivetrain mounting positions may require separate replacement depending on their condition and the vehicle's intended use.

Common Reasons for Replacement or Upgrade

• Worn Factory Engine Mount: Aging rubber components can crack, deteriorate, or separate.

• Excessive Engine Movement: Performance polyurethane helps reduce unwanted engine rocking.

• Drivetrain Clunking: Worn mounts can contribute to noise during acceleration and shifting.

• Increased Performance Demands: Modified engines may benefit from firmer mounting.

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

• Improved Drivetrain Positioning: Helps maintain more consistent engine alignment under load.

• Billet Aluminum Appearance: Provides a premium engine bay upgrade.

• Track and Competition Use: Firmer mounting helps control drivetrain movement during aggressive driving.

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

Installation Notes

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

2. Confirm Mounting Position: The B90620 is designed for the passenger-side engine mounting location.

3. Inspect the Factory Mount: Check for cracked rubber, separated components, leaking hydraulic fluid where applicable, or excessive movement.

4. Prepare the Vehicle: Park on a level surface and safely support the vehicle using appropriate equipment.

5. Support the Engine: Properly support the engine before removing the factory passenger-side mount.

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

7. Inspect Mounting Surfaces: Check the chassis and engine-side mounting brackets for damage, corrosion, or deformation.

8. Position the Innovative Mounts B90620: Install the billet aluminum mount in the correct orientation.

9. Verify Alignment: Ensure the mounting points align correctly without excessive preload or binding.

10. Install the Required Hardware: Use the fasteners specified in the manufacturer's installation instructions.

11. Torque All Fasteners: Follow Innovative Mounts' instructions and applicable Honda or Acura service procedures.

12. Inspect Engine Bay Clearance: Verify adequate clearance around the engine, accessories, cooling system, and surrounding components.

13. Check for Additional Vibration: Some increase in noise, vibration, and harshness is normal when installing performance polyurethane engine mounts.

14. Perform a Final Inspection: Confirm proper mounting alignment and hardware security before operating the vehicle.

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

Professional installation by an experienced Honda or Acura technician is recommended.

What's Included

The Innovative Mounts B90620 Billet Aluminum Passenger-Side Engine Mount includes:

• 1 × Innovative Mounts B90620 Passenger-Side Engine Mount

• Installed performance polyurethane bushing in the selected configuration

• Manufacturer-supplied hardware, if applicable

Important: This listing is for one passenger-side engine mount, not a complete engine and transmission mount kit.

Other engine mounts, transmission mounts, engine-side brackets, and additional hardware are not included unless specifically stated.

Closing Product Summary

Upgrade your Acura RSX or Honda Civic Si EP3 with the Innovative Mounts B90620 Billet Aluminum Passenger-Side Engine Mount, designed for compatible 2002–2006 Acura RSX DC5 and 2002–2005 Honda Civic Si EP3 applications.

Featuring billet aluminum construction, performance polyurethane bushings, and a purpose-built passenger-side mounting configuration, the B90620 provides improved drivetrain stability and a premium alternative to aging factory engine mounts.

Whether you're replacing a worn factory mount, upgrading a naturally aspirated K20 engine, or building a turbocharged performance vehicle, Innovative Mounts delivers a durable and performance-oriented solution.