This guide is intended to help you plan a Honda K-Series engine swap. BridgeSource Auto verifies compatibility, availability, pricing and lead time before accepting any order. No purchase commitment is created by using this guide.
To enquire about specific parts or confirm fitment for your build, please use our Request a Part page. We will review your vehicle details and respond before any order is placed.
A — Mounting and Chassis Installation
Engine mounts, subframe adapters, crossmember modifications and chassis-specific fitment hardware required to position the K-Series engine correctly in your donor vehicle.
- Engine mount kit (chassis-specific)
- Subframe adapters or reinforcement plates
- Transmission crossmember
- Shifter mounting, adapter and conversion hardware
B — Gearbox, Clutch, Axles and Drivetrain
Transmission selection, clutch assembly, axle shafts and intermediate shaft components to complete the drivetrain installation.
- Gearbox (K-Series compatible)
- Clutch kit and flywheel
- Axle shafts (application-specific)
- Intermediate shaft and compatible axle solution
- Shift cables and end fittings
C — Wiring, ECU and Electrical Conversion
Engine wiring harness, ECU selection, chassis integration and any conversion or adaptation required for your donor vehicle’s electrical system.
- K-Series engine wiring harness
- ECU (OEM or aftermarket)
- Chassis harness conversion or adapter
- Immobiliser, key and ECU integration
- Sensor adapters (where required)
D — Fuel, Intake and Throttle System
Fuel delivery, intake manifold, throttle body and associated hardware to support the K-Series fuel and air system.
- Fuel pump and regulator (compatible with K-Series demand)
- Fuel lines and fittings
- Intake manifold (OEM or aftermarket)
- Throttle body and gaskets
- Air intake or cold-air system
E — Cooling and Exhaust
Radiator, coolant hoses, thermostat housing, exhaust manifold and downpipe components to manage heat and gas flow.
- Radiator (sized for K-Series output)
- Coolant hoses and fittings
- Thermostat housing adapter (if required)
- Exhaust manifold or header
- Downpipe and exhaust system
F — Completion Parts, Fittings and Accessories
Supporting hardware, brackets, fasteners and finishing components needed to complete the installation safely and cleanly.
- Engine bay fasteners and hardware kit
- Power steering delete or conversion kit
- Air conditioning delete or retention components
- Breather and catch-can system
- Additional brackets and ancillaries
Every K-swap is application-specific. This planning guide is not an exhaustive installation or safety manual. Parts must be confirmed against the donor chassis, engine code, gearbox, ECU, intended use and existing modifications. Installation should be completed or inspected by a suitably experienced automotive professional.
Chassis-Specific Planning Guides
For a detailed parts and planning guide tailored to your chassis, see below. Each guide covers engine and gearbox selection, mounts, shifter, axles, wiring, fuel, cooling, exhaust, suspension and completion hardware specific to that platform.
- Honda Civic EG — K-Swap Parts & Planning Guide
- Honda Civic / Ballade EK — K-Swap Parts & Planning Guide
Ready to Source Parts?
BridgeSource Auto verifies compatibility, availability, pricing and lead time before accepting an order. Submitting a request does not create a purchase obligation.
Submit a Request a Part enquiry →
BridgeSource Auto is an independent aftermarket parts business. Honda and associated model names are trademarks of their respective owner. BridgeSource Auto is not affiliated with, authorised by or endorsed by Honda Motor Co., Ltd.