Air and Fuel Intake Manifolds and Components

K-Tuned

KPower K24A2 Throttle Body Adapter

$6,395.00

SKU: KM-ULTIMATE-K24A2-V3-R-C

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The K-Tuned Ultimate K24A2 Swap Package is a conversion kit designed to install a 2004-2008 Acura TSX engine into a 1990-2005 Mazda Miata (NA/NB chassis).

This comprehensive package includes all necessary components to perform the swap, such as an adapter plate, flywheel, engine mounts, subframe, oil pan, intake manifold, and a stainless steel header. It offers a choice between a 74mm cable throttle body or a Bosch Drive-by-Wire throttle body option.
Show original supplier description
The KPower K24A2 Ultimate Swap Package is a comprehensive conversion kit engineered for the installation of a 2004-2008 Acura TSX engine (specifically K24A2 or JDM K24A RBB) into 1990-2005 Mazda Miata NA and NB chassis. Key components included in the package are a K-series to Miata transmission adapter plate, a lightweight K-series to Miata flywheel, machined engine mounts with either poly or rubber pads, a tubular subframe that replaces the factory unit, a baffled aluminum oil pan with a pickup tube, a machined K20 oil pump adapter housing, and a KPower RWD intake manifold with gasket and hardware. Additionally, it features a K24A2-specific upper coolant neck, a slim flywheel dust cover, a 1320mm serpentine belt, and a stainless steel 4-2-1 race header. Buyers can also choose between a 74mm cable throttle body assembly or a Bosch 74mm Drive-by-Wire throttle body with an adapter. Most customers can expect to achieve 220+ whp and 180 wtq naturally aspirated with a stock K24A2 engine, with significant potential for further gains through bolt-ons and tuning. Important fitment and installation notes apply. The K24 engine sits approximately ½ inch taller than the K20, which means it will not fit under a factory NA Miata hood without modification; a modified valve cover is recommended for proper clearance. This swap is compatible with right-hand-drive Miatas, with the exception of the header; RHD setups require a custom solution and direct contact with KPower Industries. Furthermore, the included engine mounts are compatible with JDM K24A RBB, K24A2, K24A3, K24A4, K20Z3, K20Z4, and K24A8 engines. However, they do NOT fit K20A2, K20Z1, or K24A1 blocks due to incompatible bolt-hole locations. All products are intended for off-road motorsports use only, and users are responsible for complying with local laws.
Vehicle Symptoms
  • Lack of low-end torque in high RPM driving
  • Stock engine feels underpowered on highway
  • Original engine has high mileage or failure
  • Wanting a reliable, modern powerplant swap
  • Miata needs more power for track days
Relevant Conversations
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  • K-Tuned Ultimate K24A2 Swap Package review
  • K24A2 swap oil pan and subframe compatibility
  • Best engine swap for Mazda Miata budget
  • K24A2 into Miata transmission adapter plate
  • K-swap Miata install guide and tips
  • K24A2 swap parts list and pricing 2025
  • Miata K24 swap vs Honda K20 swap reliability
  • K24A2 swap subframe and mounts for NB

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandK-Tuned
Part NumberKM-ULTIMATE-K24A2-V3-R-C
CategoryAir and Fuel

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