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Product Details
Upgrade your fifth-generation Honda Prelude with the Hasport BB6K4 K-Series Engine Swap Mount Kit, designed for installing compatible Honda K20 and K24 engines paired with 2003–2007 Honda Accord or 2004–2008 Acura TSX manual transmissions into the 1997–2001 Honda Prelude chassis.
Engineered specifically for K-Series engine conversions, the Hasport BB6K4 provides the specialized engine and transmission mounting components needed to replace the factory H-Series drivetrain with Honda's popular K-Series engine platform.
Featuring Hasport's dual-height mounting system, precision-engineered construction, and performance polyurethane bushings, the BB6K4 provides dependable drivetrain support for naturally aspirated, turbocharged, and competition-oriented Prelude builds.
Whether you're building a high-revving K20-powered Prelude, a torque-focused K24 street car, or a custom forced-induction project, the Hasport BB6K4 delivers a purpose-built mounting solution for your K-Series conversion.
Designed for Fifth-Generation Honda Prelude K-Series Swaps
The 1997–2001 Honda Prelude provides an excellent platform for performance-oriented engine conversions.
The Hasport BB6K4 allows builders to replace the original H-Series engine with a compatible K-Series drivetrain while using the specified Accord or TSX manual transmission family.
Key benefits include:
Application-specific mounting for the fifth-generation Honda Prelude.
Compatibility with supported Honda K20 and K24 engines.
Support for 2003–2007 Honda Accord 2.4L manual transmissions.
Support for 2004–2008 Acura TSX 2.4L manual transmissions.
Dual-height mounting geometry for K20 and K24 engine configurations.
Optimized engine positioning for axle alignment.
Engine placement designed with hood and ground clearance in mind.
Reduced excessive drivetrain movement.
Durable mounting support for street and motorsport applications.
Accord and TSX Manual Transmission Compatibility
The Hasport BB6K4 is specifically designed for compatible K-Series manual transmissions from the following vehicles:
2003–2007 Honda Accord 2.4L Manual
2004–2008 Acura TSX 2.4L Manual
These transmissions use a different mounting arrangement than the Acura RSX and Civic Si transmissions supported by the BB6K2.
Selecting the correct Hasport mount kit is essential for proper drivetrain positioning and installation.
The BB6K4 is designed for the earlier Accord and TSX K-Series manual transmission family.
For builds using Acura RSX or 2002–2011 Civic Si manual transmissions, Hasport offers the BB6K2.
For builds using 2008–2013 Accord, 2009–2014 TSX, or 2012–2015 Civic Si manual transmissions, Hasport offers the BB6K5.
Dual-Height K20 and K24 Mounting System
One of the key advantages of the Hasport BB6K4 is its dual-height mounting design.
Honda K20 and K24 engines have different block heights, which affect cylinder head positioning, hood clearance, and overall drivetrain placement.
Hasport engineered the BB6K mounting system to accommodate these differences while maintaining consistent cylinder head positioning between supported engine configurations.
Benefits include:
Optimized engine placement for compatible K20 and K24 engines.
Improved hood clearance considerations.
Better ground clearance management.
Consistent cylinder head positioning.
Simplified intake manifold and intake system fitment planning.
More consistent header and exhaust positioning.
Greater flexibility when designing turbocharger systems.
Improved drivetrain alignment within the Prelude chassis.
Precision-Engineered Hasport Construction
Hasport develops its engine mounting systems using CAD/CAM engineering technology to achieve accurate fitment, consistent manufacturing quality, and dependable structural strength.
The BB6K4 uses application-specific mounting components designed to withstand the demands of performance-oriented engine conversions.
Combined with Hasport's performance polyurethane bushings, the mounting system helps maintain consistent drivetrain positioning under demanding driving conditions.
Performance Polyurethane Bushings
The Hasport BB6K4 is available with multiple polyurethane bushing hardness options.
Unlike conventional factory rubber mounts, polyurethane bushings help reduce excessive engine and transmission movement during acceleration, deceleration, and shifting.
Reducing drivetrain movement helps maintain more consistent engine positioning and can improve shifting stability during aggressive driving.
Builders can select the appropriate bushing hardness based on their intended application, from daily driving to dedicated competition use.
Features
1997–2001 Honda Prelude Compatibility: Designed for fifth-generation Honda Prelude applications.
K-Series Engine Swap Design: Supports compatible Honda K20 and K24 engines.
Accord Manual Transmission Compatibility: Designed for 2003–2007 Honda Accord 2.4L manual transmissions.
TSX Manual Transmission Compatibility: Supports 2004–2008 Acura TSX 2.4L manual transmissions.
Dual-Height Mounting System: Accommodates supported K20 and K24 engine configurations.
Optimized Drivetrain Positioning: Engineered for proper engine and transmission placement.
Improved Axle Alignment: Mounting geometry designed with axle positioning in mind.
Hood and Ground Clearance Considerations: Optimized engine placement within the Prelude chassis.
Manual and Automatic Chassis Compatibility: Suitable for supported Prelude chassis originally equipped with either transmission type.
CAD/CAM Engineered: Designed for accurate fitment and dependable structural strength.
Performance Polyurethane Bushings: Help reduce excessive drivetrain movement.
Improved Engine Stability: Limits unwanted engine rocking during acceleration and shifting.
Multiple Bushing Hardness Options: Available in 62A, 70A, 88A, and 94A configurations.
Naturally Aspirated and Forced-Induction Applications: Suitable for compatible performance K-Series builds.
Popular Performance Applications
1997–2001 Honda Prelude K20 Swaps
Provides a specialized mounting foundation for installing a compatible K20 engine into the fifth-generation Prelude.
K24A2 Performance Conversions
Supports compatible K24A2 engine installations for increased displacement and torque potential.
Acura TSX Six-Speed Transmission Swaps
Allows builders to use compatible 2004–2008 Acura TSX six-speed manual transmissions with supported K-Series engines.
Honda Accord Manual Transmission Conversions
Supports compatible 2003–2007 Honda Accord K-Series manual transmissions.
Naturally Aspirated K-Series Performance
Suitable for compatible K-Series engines equipped with performance camshafts, intake manifolds, headers, and other naturally aspirated modifications.
Turbocharged Prelude Builds
Provides dependable drivetrain mounting support for custom forced-induction K-Series applications.
Autocross and Road Racing
Performance polyurethane bushings help reduce excessive engine movement during acceleration, braking, and cornering.
Drag Racing Applications
Provides increased drivetrain stability for aggressive launches and high-load acceleration.
Street Performance Conversions
The available 62A Street bushing option allows builders to prioritize everyday drivability while upgrading drivetrain support.
Additional Information
- Manufacturer: Hasport Performance
- Part Number: BB6K4
- Product Type: K-Series Engine Swap Mount Kit
- Vehicle Application: 1997–2001 Honda Prelude
- Chassis Compatibility: Fifth Generation
- Engine Compatibility: Compatible Honda K20 / K24
- Transmission Compatibility: 2003–2007 Honda Accord 2.4L Manual / 2004–2008 Acura TSX 2.4L Manual
- Mounting Design: Dual-Height K-Series Mounting System
- Bushing Material: Performance Polyurethane
- Available Bushing Hardness Options: 62A / 70A / 88A / 94A
- Design Method: CAD/CAM Engineered
- Original Chassis Transmission: Manual or Automatic
- Installation Type: K-Series Engine Swap Conversion
- Chassis Modification Required: Yes – Removal of Factory Transmission Mount Bracket from Frame Rail
Available Polyurethane Bushing Hardness Options
62A – Street
The softest available configuration, designed for street-driven vehicles where vibration isolation and everyday comfort are important considerations.
Recommended for daily-driven K-Series Prelude conversions and street performance applications.
70A – Race
Provides increased drivetrain rigidity for aggressive street driving, spirited performance applications, and occasional track use.
Suitable for modified naturally aspirated and turbocharged K-Series engines where additional drivetrain stability is desired.
88A – Extreme Race
A firmer polyurethane configuration intended for demanding motorsport applications where minimizing drivetrain movement is a priority.
Recommended for competition-oriented vehicles requiring increased engine stability.
94A – Most Extreme Race
The stiffest available polyurethane configuration, intended for dedicated racing applications where maximum drivetrain rigidity takes priority over passenger comfort.
Higher-durometer bushings generally increase noise, vibration, and harshness transmitted into the vehicle cabin.
BB6K2 vs. BB6K4 vs. BB6K5
Hasport BB6K2: Designed for compatible K20 or K24 engine swaps using Acura RSX or 2002–2011 Honda Civic Si manual transmissions.
Hasport BB6K4: Designed for compatible K20 or K24 engine swaps using 2003–2007 Honda Accord or 2004–2008 Acura TSX manual transmissions.
Hasport BB6K5: Designed for compatible K20 or K24 engine swaps using 2008–2013 Honda Accord, 2009–2014 Acura TSX, or 2012–2015 Honda Civic Si manual transmissions.
All three configurations are designed for the fifth-generation Prelude but accommodate different K-Series transmission mounting arrangements.
Common Reasons for Replacement or Upgrade
K-Series Engine Conversion: Provides specialized mounting components for installing a compatible Honda K20 or K24 drivetrain.
Prelude Drivetrain Modernization: Supports replacing the factory H-Series engine with a K-Series platform.
Accord Manual Transmission Installation: Accommodates compatible 2003–2007 Accord manual transmissions.
Acura TSX Manual Transmission Installation: Supports compatible 2004–2008 TSX manual transmissions.
Increased Performance Potential: Opens access to extensive K-Series naturally aspirated and forced-induction modifications.
Dual-Height Engine Compatibility: Accommodates supported K20 and K24 engine block heights.
Optimized Drivetrain Placement: Engineered for axle alignment and clearance considerations.
Reduced Engine Movement: Polyurethane bushings help limit excessive drivetrain rocking.
Improved Shifting Stability: Reduced mount deflection helps stabilize the drivetrain during gear changes.
Street and Competition Applications: Multiple bushing hardness options accommodate different driving requirements.
Installation Notes
Verify Vehicle Compatibility: Confirm that the vehicle is a 1997–2001 Honda Prelude.
Confirm Engine Compatibility: Identify the exact Honda K20 or K24 engine being installed.
Verify Transmission Compatibility: Confirm that the selected transmission is from a supported 2003–2007 Accord or 2004–2008 TSX application.
Inspect Engine-Side Mounting Brackets: Verify that the engine has the appropriate mounting provisions and required brackets.
Prepare for Chassis Modification: The factory transmission mounting bracket on the frame rail must be removed to accommodate the K-Series mounting system.
Inspect the Engine Bay: Check the condition of the frame rails, factory mounting points, and surrounding components before beginning the conversion.
Plan Supporting Swap Components: Additional axles, intermediate shaft, wiring, ECU, shifter, shift cables, clutch, cooling, fuel system, and exhaust components will be required.
Support the Engine and Transmission: Use appropriate lifting equipment and drivetrain supports.
Remove the Factory Drivetrain: Follow the applicable Honda service procedures.
Complete Required Chassis Modifications: Remove the interfering factory transmission bracket according to Hasport's installation instructions.
Install the Hasport Mounting Components: Position the mounts and brackets according to the manufacturer's instructions.
Verify Engine Height and Positioning: Confirm that the K20 or K24 configuration provides the intended engine placement.
Inspect Axle Alignment: Verify proper axle engagement, operating angles, and clearance.
Check Hood and Ground Clearance: Confirm that the installed drivetrain does not interfere with surrounding components.
Verify Intake and Exhaust Fitment: Check compatibility with the selected intake manifold, header, exhaust routing, and any forced-induction components.
Complete Supporting Systems: Install and verify the required wiring, ECU, fuel, cooling, clutch, and shifter components.
Torque Mounting Hardware: Follow Hasport's installation instructions and applicable Honda factory torque specifications.
Perform a Final Inspection: Verify mounting hardware, drivetrain positioning, and surrounding component clearances before operating the vehicle.
Recheck After Initial Use: Inspect mounting hardware and drivetrain components after the initial driving period.
Professional installation is strongly recommended because K-Series engine conversions require chassis modifications and extensive drivetrain integration.
What's Included
Hasport BB6K4 K-Series engine swap mounting components
Application-specific engine and transmission mounting brackets
Performance polyurethane bushings in the selected hardness configuration
Associated mounting hardware supplied with the kit
Important: The BB6K4 is an engine and transmission mounting kit, not a complete K-Series conversion package.
The engine, transmission, axles, intermediate shaft, ECU, wiring harness, shifter assembly, shift cables, clutch components, cooling system modifications, and other supporting swap parts are not included unless otherwise specified.
Transform your fifth-generation Honda Prelude with the Hasport BB6K4 K-Series Engine Swap Mount Kit, engineered for 1997–2001 Prelude applications using compatible Honda K20 or K24 engines with 2003–2007 Accord or 2004–2008 TSX manual transmissions.
Featuring Hasport's dual-height mounting system, optimized drivetrain positioning, precision-engineered construction, and performance polyurethane bushings, the BB6K4 provides the support and stability needed for a serious K-Series conversion.
Whether you're building a high-revving K20 Prelude, a high-torque K24 street car, or a custom turbocharged performance project, Hasport delivers a purpose-built mounting solution for your build.
| Part Number: | BB6K4 |
| Brand: | Hasport |
WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.
Vehicle Fitment
| Year | Make | Model | Trim |
|---|---|---|---|
| 1997 | Honda | Prelude | Base |
| 1997 | Honda | Prelude | Type SH |
| 1998 | Honda | Prelude | Base |
| 1998 | Honda | Prelude | Type SH |
| 1999 | Honda | Prelude | Base |
| 1999 | Honda | Prelude | Type SH |
| 2000 | Honda | Prelude | Base |
| 2000 | Honda | Prelude | Type SH |
| 2001 | Honda | Prelude | Base |
| 2001 | Honda | Prelude | Type SH |
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