Designed for Civic EK, EJ, and EM applications, the Innovative Mounts 90051 provides the specialized engine and transmission mounting components required to replace the original D-Series or B-Series drivetrain with a Honda K-Series powertrain.

Unlike K-Series swap mount kits designed around the factory EK front subframe, the Innovative Mounts 90051 requires a 1992–1995 Honda Civic EG-style front subframe and rear crossmember configuration. A compatible 1994–2001 Acura Integra front subframe assembly may also be used when properly configured.

Featuring durable steel construction, CAD/CAM-engineered mounting geometry, stress-analyzed components, and Innovative Mounts' no-tear polyurethane bushings, the 90051 helps reduce excessive engine movement and maintain consistent drivetrain positioning during acceleration, shifting, and performance driving.

Whether you're building a naturally aspirated K20-powered Civic, a high-torque K24 street car, or a turbocharged K-Series racing project, the Innovative Mounts 90051 provides a purpose-built mounting foundation for your engine conversion.

Designed for 1996–2000 Honda Civic K-Series Swaps

The sixth-generation Honda Civic is a popular platform for K-Series engine conversions because of its lightweight chassis and extensive aftermarket support.

The Innovative Mounts 90051 is engineered for supported 1996–2000 Civic chassis originally equipped with either manual or automatic transmissions.

The completed conversion must use a compatible K-Series manual transmission.

Key benefits include:

• Application-specific mounting for 1996–2000 Honda Civic chassis.

• Compatible with supported factory manual or automatic chassis configurations.

• Designed for Honda K-Series engine conversions.

• Supports compatible K20 engines.

• Accommodates compatible K24 engines with the required engine-side mounting bracket.

• Designed for compatible K-Series manual transmissions.

• Requires an EG-style front subframe and rear crossmember.

• Durable steel engine and transmission mounting components.

• Performance polyurethane bushings.

• Reduced excessive drivetrain movement.

• Improved engine and transmission stability.

• Multiple bushing hardness options for street and competition applications.

Required EG Front Subframe Conversion

One of the most important fitment requirements of the Innovative Mounts 90051 is its compatibility with the earlier EG-style front subframe arrangement.

The factory 1996–2000 Civic EK front subframe uses different mounting geometry than the earlier 1992–1995 Civic EG configuration.

The Innovative Mounts 90051 is designed around the earlier EG-style front subframe and rear crossmember mounting arrangement.

Compatible conversion configurations may use:

• 1992–1995 Honda Civic EG front subframe assembly.

• Compatible 1994–2001 Acura Integra front subframe assembly.

Depending on the conversion, additional components may include the matching steering rack, lower control arms, suspension forks, and associated hardware.

Important: The 90051 is not designed for installation with the original EK-style front subframe. The required subframe conversion must be completed before installing this mounting system.

Honda K20 and K24 Engine Compatibility

Honda's K-Series engine family offers extensive performance potential, strong aftermarket support, and a wide range of naturally aspirated and forced-induction upgrade options.

The Innovative Mounts 90051 supports compatible K20 engine conversions and can accommodate selected K24 configurations when using the appropriate engine-side mounting bracket.

Popular engine applications include:

• Honda K20A

• Honda K20A2

• Honda K20A3

• Honda K20Z1

• Honda K20Z3

• Compatible Honda K24 engine configurations

For supported K24 applications, the appropriate engine-side post mount is required.

Innovative Mounts 103750 is a K24 post mount bracket commonly used for this conversion and is offered separately.

Important: Engine compatibility depends on the specific engine block, transmission, engine-side brackets, accessory arrangement, and supporting swap components. Not every K-Series engine is a direct bolt-in application.

K-Series Manual Transmission Compatibility

The Innovative Mounts 90051 is designed for compatible K-Series manual transmission configurations.

Popular donor applications include:

• 2002–2006 Acura RSX manual transmissions.

• 2002–2005 Honda Civic Si manual transmissions.

• Other compatible K-Series manual transmissions with the appropriate mounting arrangement.

Transmission case compatibility must be verified before ordering.

The 90051 is not intended for automatic transmission installations.

Durable Steel Mount Construction

The Innovative Mounts 90051 features steel mounting components engineered for performance drivetrain applications.

Innovative Mounts utilizes CAD/CAM engineering and stress analysis to develop mounting systems designed for consistent fitment and dependable drivetrain support.

The steel construction provides a durable mounting foundation for compatible naturally aspirated and forced-induction K-Series builds.

Performance Polyurethane Bushings

Factory Honda engine mounts use rubber damping components designed to isolate engine vibration from the chassis.

While effective for everyday driving, factory-style mounts can allow excessive drivetrain movement during aggressive acceleration and performance driving.

The Innovative Mounts 90051 incorporates no-tear polyurethane bushings designed to provide increased resistance to engine and transmission movement.

Benefits include:

• Reduced excessive engine rocking.

• Improved drivetrain stability.

• More consistent engine and transmission positioning.

• Reduced mount deflection during acceleration.

• Improved drivetrain responsiveness.

• Potential reduction in wheel hop.

• Increased resistance to drivetrain movement.

• Multiple bushing hardness options.

Features

• 1996–2000 Honda Civic Compatibility: Designed for sixth-generation Civic EK, EJ, and EM chassis applications.

• K-Series Engine Swap Design: Supports compatible Honda K-Series engine conversions.

• K20 Engine Compatibility: Designed for supported Honda K20 engine configurations.

• K24 Engine Compatibility: Accommodates compatible K24 engines with the appropriate post mount bracket.

• Manual Transmission Design: Engineered for compatible K-Series manual transmissions.

• EG Subframe Requirement: Requires a 1992–1995 Civic EG-style front subframe and rear crossmember configuration.

• Integra Subframe Compatibility: Can accommodate properly configured 1994–2001 Acura Integra front subframe conversions.

• Manual and Automatic Chassis Support: Suitable for supported Civics originally equipped with either transmission type.

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

• CAD/CAM Engineered: Developed for accurate fitment and consistent manufacturing quality.

• Stress-Analyzed Components: Designed for demanding drivetrain loads.

• No-Tear Polyurethane Bushings: Help reduce excessive engine and transmission movement.

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

• Improved Throttle Response: Reduced mount deflection can improve drivetrain responsiveness.

• Reduced Wheel Hop: Firmer mounting may help limit excessive drivetrain movement under load.

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

• Street and Motorsport Applications: Suitable for properly configured performance builds.

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

Popular Performance Applications

1996–2000 Honda Civic K20 Engine Swaps

Provides the specialized mounting components needed for compatible K20-powered Civic conversions using an EG-style subframe.

K24-Powered EK Civic Builds

Supports properly configured K24 engine installations with the appropriate post mount bracket and manual transmission.

Naturally Aspirated K-Series Performance

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

Turbocharged K-Series Civic Builds

Performance polyurethane bushings help reduce excessive drivetrain movement in properly configured forced-induction applications.

Automatic-to-Manual K-Series Conversions

Provides the engine mounting foundation for supported automatic Civic chassis being converted to a K-Series manual drivetrain.

Street Performance Builds

Allows enthusiasts to select a bushing hardness appropriate for their desired balance of drivetrain rigidity and everyday comfort.

Drag Racing Applications

Firmer polyurethane bushings help maintain drivetrain stability during aggressive acceleration and launches.

Autocross and Road Racing

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

Additional Information

• Manufacturer: Innovative Mounts
• Part Number: 90051
• Product Type: Steel K-Series Engine Swap Mount Kit
• Vehicle Application: 1996–2000 Honda Civic
• Chassis Compatibility: EK / EJ / EM
• Engine Compatibility: Compatible Honda K-Series
• Transmission Compatibility: K-Series Manual
• Original Chassis Transmission: Manual or Automatic
• Required Subframe: EG-Style Front Subframe and Rear Crossmember
• Mount Construction: Steel
• Bushing Material: Performance Polyurethane
• Available Bushing Hardness Options: 75A / 85A / 95A
• Optional K24 Post Mount Bracket: Innovative Mounts 103750
• Engineering: CAD/CAM Designed and Stress Analyzed
• Installation Type: K-Series Engine Swap Conversion
• Manufacturer-Listed Weight: Approximately 25 lbs
• Warranty: Manufacturer Lifetime Warranty, Subject to Terms

Available Polyurethane Bushing Hardness Options

75A – Black – Street / Performance

The softest available option for the 90051.

Designed 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 listed polyurethane option, intended for high-output engines and dedicated racing applications.

Manufacturer horsepower guidance: 500+ HP.

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

Important: Firmer polyurethane bushings generally increase noise, vibration, and harshness transmitted into the vehicle cabin.

Innovative Mounts 90050 vs. 90051 vs. B90051

Innovative Mounts 90050: Steel K-Series engine swap mount kit for supported 1996–2000 Honda Civic applications using the factory EK-style front subframe.

Innovative Mounts 90051: Steel K-Series engine swap mount kit for supported 1996–2000 Honda Civic applications converted to an EG-style front subframe.

Innovative Mounts B90051: Billet aluminum version of the EG-subframe K-Series conversion mounting system.

Selecting the correct kit depends on the vehicle's front subframe configuration.

Common Reasons for Replacement or Upgrade

• K-Series Engine Conversion: Provides specialized mounting components for installing a compatible Honda K-Series drivetrain.

• EG Subframe Conversion: Designed for Civic builds using the earlier EG-style front subframe.

• K20 Manual Transmission Installation: Supports compatible K-Series manual transmission configurations.

• K24 Engine Conversion: Accommodates compatible K24 engine installations with the correct post mount bracket.

• Automatic-to-Manual Conversion: Supports the mounting requirements of compatible automatic Civic chassis being converted to K-Series manual drivetrains.

• Improved Drivetrain Stability: Helps reduce excessive engine movement during acceleration.

• Reduced Mount Deflection: Provides firmer engine support compared with conventional rubber mounts.

• Improved Drivetrain Response: Helps maintain more consistent engine positioning under load.

• Performance Engine Builds: Suitable for compatible naturally aspirated and turbocharged K-Series applications.

• Street and Competition Applications: Multiple bushing hardness options accommodate different driving requirements.

Installation Notes

1. Verify Vehicle Compatibility: Confirm that the vehicle is a 1996–2000 Honda Civic.

2. Confirm Subframe Compatibility: Verify that the vehicle has the required EG-style front subframe and rear crossmember configuration.

3. Verify Engine Compatibility: Identify the exact Honda K-Series engine being installed.

4. Confirm Transmission Compatibility: Verify that the selected transmission is a compatible K-Series manual transmission.

5. Check K24 Engine Requirements: When installing a compatible K24 engine, verify the required engine-side post mount bracket.

6. Plan the Complete K-Series Conversion: Obtain the appropriate engine, transmission, axles, intermediate shaft, shifter, wiring, ECU, cooling system, and other supporting components.

7. Prepare Automatic Chassis Components if Applicable: Vehicles originally equipped with automatic transmissions require additional manual conversion components.

8. Inspect Factory Mounting Locations: Check the chassis brackets, frame rails, and subframe mounting points for damage or corrosion.

9. Support the Vehicle and Drivetrain: Use appropriate lifting equipment and engine support tools.

10. Install the Required EG-Style Subframe: Verify correct subframe, steering, suspension, and rear crossmember compatibility.

11. Remove the Factory Drivetrain: Follow applicable Honda service procedures.

12. Prepare the K-Series Engine: Install the correct engine-side mounting brackets and supporting swap components.

13. Install the Innovative Mounts Components: Position the engine and transmission mounts according to the manufacturer's installation instructions.

14. Install the Required Sub-Brackets: Secure the application-specific mounting brackets according to the manufacturer's procedures.

15. Verify Engine and Transmission Positioning: Ensure the drivetrain is properly aligned and the mounts are not binding.

16. Inspect Axle Fitment: Confirm proper axle engagement, operating angles, and clearance.

17. Check Engine Bay Clearance: Verify clearance around the subframe, steering components, exhaust system, intake components, and surrounding accessories.

18. Complete Supporting Systems: Install and verify the ECU, wiring, cooling, fuel, clutch, and shifter components.

19. Torque Mounting Hardware: Follow Innovative Mounts' installation instructions and applicable Honda factory torque specifications.

20. Perform a Final Inspection: Check all mounting hardware, drivetrain clearances, fluid connections, and transmission operation before driving.

21. Check for Excessive Vibration: Some increase in vibration is normal with performance polyurethane mounts, particularly with firmer bushing options.

22. Recheck After Initial Use: Inspect the mounting hardware and drivetrain components after the initial driving period.

Professional installation is strongly recommended, as K-Series engine conversions involving subframe changes require careful drivetrain and chassis integration.

What's Included

The Innovative Mounts 90051 is a steel K-Series conversion mount kit consisting of:

• Driver-side / transmission mount

• Passenger-side / engine mount

• Rear engine mount

• Application-specific mounting sub-brackets

• Performance polyurethane bushings in the selected hardness configuration

• Supplied mounting hardware

Additional Components Required

The following components are not included unless separately specified:

• Honda K-Series engine

• Compatible K-Series manual transmission

• EG-style front subframe and rear crossmember

• Compatible steering and suspension conversion components

• K24 engine-side post mount bracket, if required

• Clutch and flywheel

• Axles and intermediate shaft

• Shifter and shift linkage components

• ECU and wiring conversion components

• Cooling system modifications

• Fuel system components

• Intake and exhaust components

• Manual conversion components for vehicles originally equipped with automatic transmissions

Upgrade your sixth-generation Honda Civic with the Innovative Mounts 90051 Steel K-Series Engine Swap Mount Kit, engineered for 1996–2000 EK/EJ/EM applications using compatible Honda K-Series engines, manual transmissions, and an EG-style front subframe.

Featuring durable steel construction, CAD/CAM engineering, stress-analyzed components, performance polyurethane bushings, and application-specific mounting brackets, the 90051 provides the drivetrain support needed for a properly configured K-Series conversion.

Whether you're building a naturally aspirated K20-powered Civic, a high-torque K24 street car, or a turbocharged K-Series racing project, Innovative Mounts delivers a purpose-built mounting solution for your build.