Name: Ultimate K24A2 Miata Swap Package
Brand: KPower Industries
SKU: KM-ULTIMATE-K24A2-V3-R-C
Price: 6195.0 USD
Availability: InStock

Select engine mount material:

Rubber (street)

Polyurethane (race)

Select throttle body option:

Cable

Drive-By-Wire

Price

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This package is designed to install a 2004–2008 Acura TSX engine (K24A2 or JDM K24A RBB) into your NA or NB Miata, eliminating the guesswork and hassle of piecing together a swap from scratch.

Most customers see 220+ whp and 180 wtq naturally aspirated with a stock K24A2, with much greater potential available through bolt-ons and tuning. Whether you're building a street car or a track weapon, this package is built to perform.

Lead times vary. Be sure to check our Current Lead Times page for the most up-to-date shipping timelines.

This swap package prioritizes reliability and race-proven performance. When paired with the required accessories, our K24A2 swap:

Retains OEM Miata steering geometry
Reduces front-end weight
Holds up to serious road course abuse

Pair this kit with one of our Electronics Packages to power your swap with a Haltech Elite 1500, Link G4X, or Hondata KPro.

Download installation instructions

Package Includes:

K series to Miata transmission adapter plate
Lightweight K series to Miata flywheel
Machined engine mounts with poly or rubber pads
Tubular subframe (replaces factory unit)
Baffled aluminum oil pan with pickup tube
Machined K20 oil pump adapter housing
KPower RWD intake manifold with gasket and hardware
K24A2-specific upper coolant neck (right side exit)
Slim flywheel dust cover
1320mm serpentine belt
Stainless 4-2-1 race header

Throttle Body Options (choose one):

74mm cable throttle body with billet cable wheel, Acuity TPS, and adapter
OR
Bosch 74mm Drive-by-Wire throttle body with adapter and gaskets

Additional Notes:

NA Chassis Hood Clearance: The K24 sits about ½ inch taller than the K20 and will not fit under a factory NA Miata hood without modification. We recommend adding our modified valve cover for proper clearance.
RHD Compatibility: This swap is compatible with right-hand-drive Miatas, excluding the header. For RHD setups, contact us at info@kpower.industries to discuss a custom solution using our RHD subframe.

KPower Recommended Supporting Parts:

KPower Haltech Elite 1500 Electronics package (Drive By Wire)
Link G4X ECU with KPower RWD Engine Harness and Miata Conversion harness (Drive By Cable)
K24A2 Miata OEM Parts Package
USDM Water Pump Housing
K24A2 Engine Sensor Package
Fluidampr Harmonic Balancer crankshaft pulley
KPower Modified Baffle Plate Valve Cover
- NA version
- NB version
KPower NA/NB Catch Can Kit
Haltech CAN Gauge or iC-7 display
NA/NB Electric Power Steering System
NA/NB Air Conditioning system with wiring harness
KPower DBW Pedal mount
KPower Flex Fuel Kit
Winning Formula DBW Throttle Body adapter (substitution for KPower adapter)