Upgrade your fourth-generation Honda Civic or second-generation CRX with the Innovative Mounts B19150 Billet Aluminum B-Series Engine Conversion Mount Kit, specifically engineered for 1988–1991 Honda Civic and CRX ED, EE, and EF chassis undergoing a B-Series engine swap with a compatible cable-operated manual transmission.

Designed for enthusiasts replacing their factory D-Series engine with a Honda B16, B17, B18, or B20 engine, the Innovative Mounts B19150 provides the specialized mounting components needed to securely position a compatible B-Series drivetrain within the Civic or CRX engine bay.

The 1988–1991 Civic and CRX remain popular platforms for Honda performance enthusiasts thanks to their lightweight construction, responsive handling, and extensive aftermarket support. Installing a B-Series engine opens the door to increased horsepower, improved torque, and a wide range of naturally aspirated and forced-induction performance upgrades.

The B19150 features precision CNC-machined billet aluminum construction, combining durability, reduced weight, and a premium engine bay appearance. Unlike conventional factory rubber mounts, the kit utilizes performance polyurethane bushings designed to reduce excessive drivetrain movement during acceleration, deceleration, and shifting.

Innovative Mounts engineered this conversion system to position the engine correctly without creating axle bind while maintaining clearance for the factory hood. The kit features a bolt-on mounting design for supported applications, eliminating the need for chassis welding or hood modification when installed with the specified drivetrain components.

With multiple polyurethane bushing hardness options and an available solid billet configuration, the B19150 is suitable for daily-driven performance vehicles, naturally aspirated B-Series builds, turbocharged applications, and dedicated racing projects.

Important: The Innovative Mounts B19150 is designed for B-Series engine swaps using a compatible cable-operated transmission. Vehicles using hydraulic B-Series transmissions require a different mounting configuration, such as the Innovative Mounts B49150.

Features

• 1988–1991 Honda Civic Compatibility: Designed for fourth-generation Civic ED, EE, and EF chassis.

• 1988–1991 Honda CRX Compatibility: Supports compatible second-generation CRX applications.

• B-Series Engine Conversion: Designed for compatible Honda B16, B17, B18, and B20 engines.

• Cable Transmission Compatibility: Specifically engineered for B-Series cable-operated manual transmissions.

• CNC-Machined Billet Aluminum: Precision-machined construction provides durability and a premium appearance.

• Three-Mount Conversion System: Includes driver-side, passenger-side transmission, and rear drivetrain mounts.

• Bolt-On Installation: Designed for installation without welding or chassis fabrication in supported applications.

• No Hood Modification Required: Engine positioning is designed to maintain factory hood clearance.

• Axle Alignment: Engine positioning is engineered to avoid axle bind.

• Performance Polyurethane Bushings: Help reduce excessive drivetrain movement compared with conventional rubber mounts.

• No-Tear Bushing Design: Engineered to resist unwanted mount deflection while retaining some vibration isolation.

• CAD/CAM Engineered: Designed for consistent mounting geometry and component fitment.

• Stress-Analyzed Components: Developed for demanding performance applications.

• Improved Drivetrain Stability: Helps control excessive engine movement during acceleration and shifting.

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

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

• Multiple Bushing Hardness Options: Available in 60A, 75A, 85A, and 95A polyurethane configurations.

• Solid Billet Option: Available for dedicated competition applications.

• Mounting Hardware Included: Supplied with the required conversion mount hardware.

• Steel Alternative Available: Innovative Mounts 19150.

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

Popular Performance Applications

1988–1991 Honda Civic B16 Engine Swaps

Provides the specialized mounting components needed to install a compatible B16 engine and cable-operated transmission into the fourth-generation Civic chassis.

1988–1991 Honda CRX B-Series Conversions

An excellent mounting solution for enthusiasts upgrading their lightweight CRX with a B-Series drivetrain.

B18 Engine Swaps

Supports compatible B18 engine conversions using the appropriate engine-side mounting components and cable transmission.

B20 Engine Conversions

Designed to accommodate properly configured B20 engine swaps while maintaining the manufacturer's intended drivetrain positioning.

Naturally Aspirated B-Series Builds

Suitable for engines equipped with performance intake manifolds, headers, camshafts, and upgraded valvetrain components.

Turbocharged B-Series Applications

Provides a performance-oriented mounting solution for properly configured forced-induction Civic and CRX builds.

Street Performance Vehicles

The 60A and 75A polyurethane options offer improved drivetrain stability 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 polyurethane or solid mounting options help resist excessive engine movement during aggressive launches.

Additional Information

• Manufacturer: Innovative Mounts
• Part Number: B19150
• Product Type: Billet Aluminum B-Series Engine Conversion Mount Kit
• Vehicle Application: 1988–1991 Honda Civic / CRX
• Chassis Compatibility: ED / EE / EF
• Engine Compatibility: Compatible Honda B16 / B17 / B18 / B20
• Transmission Compatibility: B-Series Cable-Operated Manual
• Mount Construction: CNC-Machined Billet Aluminum
• Bushing Material: Performance Polyurethane
• Available Bushing Hardness Options: 60A / 75A / 85A / 95A
• Additional Mounting Option: Solid Billet
• Mounting Configuration: Three Primary Mounts
• Driver-Side Transmission Mount: Innovative Mounts B19111
• Passenger-Side Engine Mount: Innovative Mounts B19121
• Rear Engine Mount: Innovative Mounts B19131
• Installation Type: Bolt-On Conversion
• Hood Modification: Not Required for Supported Applications
• Mounting Hardware: Included
• Engineering: CAD/CAM Designed and Stress Analyzed
• Manufacturer-Listed Weight: Approximately 8 lbs
• Warranty: Manufacturer Lifetime Warranty, Subject to Terms

Available Polyurethane Bushing Hardness Options

60A – Red – Street

The softest available polyurethane option for the B19150.

Recommended for street-driven vehicles where improved drivetrain stability is desired while minimizing additional vibration.

Manufacturer horsepower guidance: up to approximately 250 HP.

75A – Black – Performance Street

Provides increased drivetrain rigidity for modified street vehicles and occasional track use.

Manufacturer horsepower guidance: approximately 250–400 HP.

85A – Grey – Race

Designed for higher-output engines and aggressive performance applications requiring increased drivetrain control.

Manufacturer horsepower guidance: approximately 400–500 HP.

95A – Red – Extreme Race

The stiffest polyurethane option, intended for dedicated high-output and competition applications.

Manufacturer horsepower guidance: 500+ HP.

Solid Billet – Competition Only

A rigid mounting configuration without polyurethane bushings, intended for specialized racing applications where vibration isolation is not a priority.

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

Important: Firmer bushings generally transmit more noise, vibration, and harshness into the passenger cabin. Solid mounts provide essentially no conventional polyurethane vibration isolation.

Innovative Mounts B19150 vs. 19150

Innovative Mounts B19150 – Billet Aluminum

• CNC-machined billet aluminum construction

• Performance polyurethane bushing options

• Solid billet mounting option

• Premium machined appearance

• Mounting hardware included

• Designed for B-Series cable transmission conversions

Innovative Mounts 19150 – Steel

• Steel construction

• Performance polyurethane bushings

• Uses specified factory mounting hardware

• Designed for compatible B-Series cable transmission conversions

Both kits are intended for similar Civic and CRX engine conversion applications but use different mount construction.

Innovative Mounts B19150 vs. B49150

Innovative Mounts B19150 – Cable Transmission

Designed for compatible B-Series engines paired with cable-operated manual transmissions.

Innovative Mounts B49150 – Hydraulic Transmission

Designed for compatible B-Series engine swaps using a hydraulic manual transmission configuration.

Important: These kits are not interchangeable. Select the correct mounting system according to the transmission being installed.

Hood and Axle Clearance

Innovative Mounts designed the B19150 to position the B-Series engine within the supported Civic and CRX chassis without requiring hood notching or trimming.

The mounting arrangement is also engineered to position the drivetrain without creating axle bind.

Important: Always verify actual hood, axle, exhaust, and accessory clearance during installation. Aftermarket engine components and nonstandard swap configurations can change available clearance.

Additional Components Required for a B-Series Swap

The Innovative Mounts B19150 addresses the engine and transmission mounting portion of the conversion. Additional components may be required to complete the swap.

Common supporting components include:

• Compatible Honda B-Series engine

• Compatible B-Series cable-operated manual transmission

• Required engine-side mounting brackets

• B-Series swap-compatible axles

• Compatible intermediate shaft

• Cable clutch linkage and related components

• Compatible manual transmission shifter assembly

• Shift linkage

• B-Series engine wiring harness

• Chassis conversion wiring components

• Compatible ECU or aftermarket engine management system

• B-Series-compatible radiator and cooling system

• Appropriate radiator hoses

• Engine swap-compatible fuel delivery components

• B-Series swap-compatible exhaust header

• Exhaust system modifications

• Appropriate intake and throttle body components

• Required engine accessory modifications

Exact requirements depend on the selected engine, transmission, chassis configuration, and intended performance application.

Common Reasons for Replacement or Upgrade

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

• Modernized Honda Performance: Enables the use of B16, B17, B18, and B20 engines in classic Civic and CRX platforms.

• Factory Mount Incompatibility: Addresses mounting differences between the original D-Series and replacement B-Series drivetrains.

• Excessive Engine Movement: Performance polyurethane helps control unwanted drivetrain rocking.

• Wheel Hop During Acceleration: Reduced engine movement may help minimize wheel hop.

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

• Inconsistent Shifting Feel: Reduced drivetrain movement helps maintain more consistent transmission positioning.

• Naturally Aspirated Performance Builds: Supports improved drivetrain control for modified engines.

• Turbocharged Applications: Provides firmer mounting for higher-output B-Series builds.

• Billet Aluminum Construction: Offers a premium alternative to conventional steel mounts.

• Track and Racing Applications: Firmer mounts help maintain more consistent drivetrain positioning.

• Complete Conversion Mounting System: Includes the three primary mounting components needed for the supported conversion.

Installation Notes

1. Verify Vehicle Compatibility: Confirm that the vehicle is a supported 1988–1991 Honda Civic or CRX ED, EE, or EF chassis.

2. Confirm Engine Selection: Verify that the selected B16, B17, B18, or B20 engine is compatible with the conversion.

3. Confirm Transmission Compatibility: Use a supported B-Series cable-operated manual transmission.

4. Inspect Engine-Side Brackets: Verify that the required engine-side mounting brackets are installed and compatible with the selected engine.

5. Prepare the Vehicle: Follow the appropriate Honda service procedures for removing the original engine, transmission, and related components.

6. Support the Vehicle: Safely support the chassis using appropriate lifting equipment.

7. Inspect the Chassis: Check mounting areas and surrounding structural components for corrosion, cracks, or previous repairs.

8. Install the Driver-Side Transmission Mount: Position the Innovative Mounts B19111 according to the manufacturer's instructions.

9. Install the Passenger-Side Engine Mount: Position the Innovative Mounts B19121 mounting component.

10. Install the Rear Engine Mount: Position the Innovative Mounts B19131 rear mounting component.

11. Position the B-Series Drivetrain: Carefully lower the engine and transmission into the engine bay and align the mounting components.

12. Verify Drivetrain Alignment: Check engine positioning, transmission alignment, axle geometry, and clearance around surrounding chassis components.

13. Check Mount Preload: Ensure the mounts are properly aligned without excessive binding.

14. Install the Supplied Hardware: Use the mounting hardware provided with the kit and any additional hardware specified by Innovative Mounts.

15. Torque Mounting Fasteners: Follow the manufacturer's installation instructions and applicable Honda service procedures.

16. Complete Supporting Modifications: Install the required axles, clutch linkage, shift linkage, wiring, cooling system, fuel system, and exhaust components.

17. Inspect Hood Clearance: Verify that the hood closes without contacting the engine or accessories.

18. Inspect Axle Clearance: Confirm that the axles operate without binding throughout the required suspension movement.

19. Check for Additional Vibration: Some increase in noise, vibration, and harshness is normal when using performance polyurethane or solid mounts.

20. Perform a Final Inspection: Verify mounting alignment, hardware security, and drivetrain clearance before operating the vehicle.

21. Recheck After Initial Use: Inspect the mounting system and related hardware after the initial driving period.

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

Professional installation by an experienced engine swap specialist is recommended.

What's Included

The Innovative Mounts B19150 Billet Aluminum B-Series Engine Conversion Mount Kit includes:

• 1 × Innovative Mounts B19111 Driver-Side Transmission Mount

• 1 × Innovative Mounts B19121 Passenger-Side Engine Mount

• 1 × Innovative Mounts B19131 Rear Engine Mount

• Polyurethane bushings in the selected hardness configuration, or solid mounting components when the solid option is selected

• Manufacturer-supplied mounting hardware

Additional Information

This listing is for the billet aluminum B-Series conversion mounting system designed for compatible 1988–1991 Honda Civic and CRX chassis using cable-operated manual transmissions.

The following components are not included unless separately specified:

• Honda B-Series engine

• Cable-operated manual transmission

• Engine-side mounting brackets not supplied with the kit

• Clutch and flywheel assembly

• Axles and intermediate shaft

• Shift linkage and clutch linkage

• Engine wiring harness or ECU

• Cooling system conversion components

• Fuel system conversion components

• Exhaust components

• Additional engine swap components

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

Transform your fourth-generation Honda Civic or second-generation CRX with the Innovative Mounts B19150 Billet Aluminum B-Series Engine Conversion Mount Kit, engineered specifically for 1988–1991 Honda Civic and CRX ED, EE, and EF chassis using compatible B-Series engines and cable-operated manual transmissions.

Featuring precision CNC-machined billet aluminum construction, three primary drivetrain mounts, performance polyurethane bushing options, bolt-on installation, and an available solid billet configuration, the B19150 provides a durable and performance-oriented mounting solution for a properly configured B-Series engine swap.

Whether you're building a naturally aspirated B16-powered CRX, upgrading to a B18 or B20 engine, developing a turbocharged Civic, or preparing a dedicated racing application, Innovative Mounts delivers a purpose-built drivetrain mounting system.