JDM Honda K24A 2.4L DOHC VTEC Engine with 6-Speed Manual Transmission | OEM Used High Compression K24A3
$1,200.00
At a Glance
- Condition: OEM used, JDM-imported engine and transmission package
- Availability: In stock, matched-pair engine and 6-speed transmission
- Shipping: Free shipping to all 50 states via freight pallet, 5 to 10 business days
- Engine and 6-speed transmission shipped together as matched pair
- Compression tested across all 4 cylinders, results available before you pay
- i-VTEC system function verified
- 6-speed transmission internal inspection (synchros, bearings, shift forks)
- Donor application identified when verifiable (JDM Accord Euro-R, TSX, Type-S)
- 100% fitment verified before every order ships
- No core charge required
- Backed by a 15 day replacement warranty against internal defects
Description
About the JDM Honda K24A 2.4L DOHC VTEC Engine with 6-Speed Manual Transmission
Upgrade your vehicle performance with the JDM Honda K24A 2.4L DOHC i-VTEC Engine paired with a 6-Speed Manual Transmission. This powerful engine and transmission combination is designed to deliver exceptional performance and reliability, making it the perfect choice for enthusiasts, K-swap builders, and professional installers. The K24A3 is the highest-compression factory K24 variant (11.0:1), originally found in JDM Accord Euro-R and Acura TSX applications producing approximately 190 to 200 hp.
What Sets This Listing Apart
This is NOT the same as our standard Honda K24 listing (SKU vaz64 at $999). The key differentiators:
- JDM Imported: Sourced directly from Japanese Domestic Market vehicles, typically Accord Euro-R, JDM Acura TSX, or Accord Type-S
- 6-Speed Manual Transmission Included: This package includes both the engine AND the 6-speed manual transmission as a matched pair
- K24A3 Variant: The highest-compression K24 variant (11.0:1) for maximum performance
- Lower Price Point ($650): Reflects “as-is JDM core” condition, ideal for builders and rebuilders
For buyers needing a turn-key tested K24 long block with full inspection documentation and compression test results, see our standard Honda K24 Engine for Sale (SKU vaz64) at $999. For builders looking for the complete JDM drivetrain package at the lowest price point, this listing is the right choice.
Item Specifics
- Engine Type: K24A3
- Displacement: 2.4L
- Valve Train: DOHC i-VTEC
- Transmission: 6-Speed Manual (included with engine)
- Compression Ratio: High Compression (approximately 11.0:1)
- Source: JDM (Japanese Domestic Market) Imported
Compatible Cars for the JDM Honda K24A Engine
This JDM Honda K24A engine and 6-speed transmission package is compatible with a wide range of Honda vehicles, including but not limited to:
- Honda Accord: Especially desirable for early 2000s Accord owners seeking the high-compression Euro-R / Type-S configuration
- Honda CR-V: With appropriate motor mounts and ECU configuration
- Honda Element: Direct K24-series compatibility
- Honda Civic Si: Particularly the 8th generation Civic Si and earlier K-swap candidates
- K-Swap Projects: Civic EG (1992 to 1995), EK (1996 to 2000), EM (2001 to 2005), EP (2002 to 2005), Integra DC2 (1994 to 2001), DC5 (2002 to 2006)
Key Features of the JDM Honda K24A Engine Package
1. Enhanced Performance: The K24A3 is known for impressive power output and aggressive torque delivery thanks to its 11.0:1 compression ratio and JDM-spec cam profiles. Whether you are looking for improved acceleration or increased horsepower, this engine delivers exceptional naturally-aspirated performance.
2. Reliable and Durable: Crafted with precision and high-quality materials, the K-series is built to last. The aluminum block with iron sleeves, forged crankshaft, and chain-driven cams (no timing belt service required) provide long-lasting durability. Honda K-series engines are known to last 250,000-plus miles when properly maintained.
3. Advanced i-VTEC Technology: Equipped with i-VTEC (intelligent Variable Valve Timing and Lift Electronic Control) technology, this engine optimizes valve timing AND valve lift for both low-end torque and top-end power. Experience smooth and responsive performance throughout the entire RPM range, with the characteristic Honda VTEC engagement at high RPM.
4. High Compression Ratio: The 11.0:1 high compression ratio of the K24A3 enhances combustion efficiency, resulting in improved power output, sharp throttle response, and good fuel economy when not pushed hard. Premium 91-plus octane fuel is recommended.
5. Complete 6-Speed Manual Drivetrain Package: The included 6-speed manual transmission means K-swap builders get the matched gear ratios designed for the K24A3 RPM and power characteristics. No need to source a separate transmission or worry about gearing mismatches.
6. JDM Quality and Reliability: JDM (Japanese Domestic Market) engines are known for typically lower mileage than US-market engines (Japan stricter inspection laws often retire vehicles at lower mileages) and for being engineered to JDM specifications which often included higher-output cam profiles and ECU calibrations than US-market equivalents.
7. Easy Installation for K-Swap: Designed to fit into a wide range of compatible Honda chassis with appropriate K-swap kits, mounts, and harness adapters. Get back on the road with a complete drivetrain solution.
Value to the Customer
By choosing the JDM Honda K24A 2.4L DOHC i-VTEC Engine with 6-Speed Manual Transmission, you are investing in a high-performance engine and transmission combination at an exceptional value. With approximately 190 to 200 hp, the included 6-speed manual transmission, and JDM-quality construction, this package offers unmatched value for K-swap builders. Enjoy improved acceleration, increased horsepower, and a sportier driving experience, all at a price point well below typical JDM clip pricing.
Ideal Use Cases
- Civic EG / EK / EM / EP K-Swap: This package provides the engine and transmission you need for a complete K-swap into older Civic chassis
- Integra DC2 / DC5 K-Swap: Direct K-series swap into Integra chassis, with the 6-speed providing better gear spacing than the original 5-speed
- Accord Repower: For 2003 to 2007 Accord owners wanting the higher-compression K24A3 in place of a worn K24A4
- Restoration / Project Builds: Complete JDM drivetrain for any project requiring authentic K24 power
- Engine Builders: Starting point for built engine projects, with included transmission saving sourcing time
Note on JDM Sourcing
JDM-imported engines and transmissions come from Japanese vehicles that have been retired from service in Japan and shipped to the United States. JDM engines are typically lower mileage than equivalent US-market engines because of Japan vehicle inspection (Shaken) system that incentivizes vehicle retirement at lower mileage. However, JDM engines are sold “as JDM” meaning specific donor mileage is often not verifiable, and the unit comes as a matched engine + transmission “clip” package without complete documentation history.
Common K24A3 / K-Series Considerations
Like all K-series engines, this engine has the same general inspection points as our standard Honda K24:
- Timing chain stretch (a known K-series wear item)
- VTC actuator function (the variable timing control unit on the intake cam)
- Oil consumption (a concern on higher-mileage K-series, less common on JDM-spec engines due to typically lower mileage)
- i-VTEC system function
We compression test all four cylinders before shipping and disclose any concerns openly.
What Ships and What Does Not
| Item | Details |
|---|---|
| INCLUDED | K24A3 long block: aluminum block with iron liners, crank, rods, pistons, cylinder head, both camshafts, valve train including i-VTEC mechanism, oil pan, valve cover, intake manifold (typical), exhaust manifold (typical). PLUS 6-Speed Manual Transmission as matched pair from same JDM clip donor. |
| NOT INCLUDED | ECU and harness (sold separately, application-specific), throttle body (sometimes included), alternator, starter, A/C compressor, power steering pump, flywheel and clutch (transmission is dry, no clutch typically), motor and transmission mounts, K-swap-specific wiring harness and ECU adapter, axles, shift linkage components. |
| Fluids | Drained for shipping. Refill engine with Honda-spec 5W-30 motor oil, transmission with Honda MTF or equivalent manual transmission fluid. Premium 91+ octane fuel recommended due to high compression. |
| Core Note | No core charge. You are not required to return your old engine or transmission. |
Vehicle Compatibility
The K24A3 engine fits the following vehicles directly with appropriate ECU and harness:
| Vehicle | Compatibility |
|---|---|
| Honda Accord (US) | 2003 to 2007 (with K-series ECU and harness adaptation) |
| Acura TSX | 2004 to 2008 (most direct fit, K24A3 closely related to K24A2) |
| Honda CR-V | 2002 to 2006 (direct fit with appropriate adaptation) |
| Honda Element | 2003 to 2011 |
| Honda Civic Si | 2007 to 2011 (8th generation, with K-swap kit) |
| JDM Accord Euro-R (Direct Fit) | 2002 to 2008 (the original donor application) |
K-Swap into older Honda chassis (with K-swap kit and ECU/harness adaptation):
- Civic EG (1992 to 1995, EG6, EG9 hatch and sedan)
- Civic EK (1996 to 2000, EK4, EK9, also CRX del Sol)
- Civic EM (2001 to 2005, including Si EP3)
- Civic EP (2002 to 2005)
- Integra DC2 (1994 to 2001, including Type-R)
- Integra DC5 (2002 to 2006)
- S2000 AP1 / AP2 (with adapter kit)
Inspection Workflow
Every JDM Honda K24A engine + 6-speed manual transmission package we ship goes through this process:
- Compression test across all 4 cylinders, pressure per cylinder recorded
- i-VTEC system function verified
- VTC actuator condition checked
- Timing chain visual inspection
- 6-speed transmission shifted through all gears (forward and reverse) with engagement feel assessed
- Transmission case inspected for cracks
- Engine and transmission shipped together as matched pair from same JDM donor
- Donor source identified when verifiable (JDM Accord Euro-R, TSX, Type-S)
JDM engines typically come with less verifiable history than US-market engines, but Japan stricter inspection regime usually means lower-mileage donors. We disclose all known information openly before payment.
Why Buy From Part Nests
- All 4 cylinders compression tested, results before you pay
- i-VTEC system function verified
- 6-speed manual transmission shifted and inspected before shipping
- Engine and transmission shipped as matched pair from same JDM donor
- Donor source identified when verifiable (JDM Accord Euro-R, TSX, Type-S)
- Free freight pallet to all 50 states, no hidden fees
- No core charge, keep your old drivetrain
- 15 day replacement warranty on internal defects
- Cross-link to standard Honda K24 listing (vaz64) for buyers wanting fully-tested standalone long block
- Call (240) 306-7051 to confirm K-swap target chassis, donor identification, and engine + transmission compatibility before ordering
15 Day Replacement Warranty
Every JDM Honda K24A engine and 6-speed manual transmission package purchased through Part Nests carries a 15 day replacement warranty starting on the delivery date. This dual-component package covers both the engine and the transmission.
What Is Covered
- Engine internal defects: Compression failures on any of the 4 cylinders beyond what was disclosed, i-VTEC system failures, VTC actuator failures, timing chain failures, connecting rod or bearing failures within 15 days from installation
- Transmission manufacturing defects: Synchro failures beyond disclosed wear, gear or shaft failures, shift fork failures, case cracks not disclosed at shipping, loss of any forward or reverse gear within 15 days from installation
- Mismatched engine and transmission shipped (e.g., wrong K24 variant or non-matching transmission) due to an error on our end
What Is Not Covered
- Damage caused during installation
- Damage from running engine with incorrect ECU calibration for the K24A3 variant
- Damage from running engine on octane below 91 (the 11.0:1 high-compression K24A3 requires premium fuel)
- Damage from extended oil change intervals or incorrect oil viscosity (Honda-spec 5W-30 synthetic recommended)
- Damage from operating transmission with incorrect gear oil (Honda MTF or equivalent manual transmission fluid)
- Damage from mismatched clutch, flywheel, or pilot bearing
- External components (ECU, harness, alternator, starter, A/C, P/S, clutch, axles, shift linkage, motor and transmission mounts) unless itemized
- Labor expenses of any kind
To start a warranty claim, reach us within 15 days of delivery at (855) 634-4447.
- Engine + Transmission Matched Pair: From same JDM clip donor
- All 4 Cylinders Tested: Engine compression results documented before payment
- i-VTEC Verified: System function tested before shipping
- 6-Speed Transmission Inspected: Shifted through all gears, case crack check
- High-Compression K24A3: 11.0:1 JDM-spec variant identified
- 15 Day Replacement Cover: Both engine internal defects and transmission manufacturing defects protected
Additional information
| engine-type | K24A3 |
|---|---|
| displacement | 2.4 liters (2, 354 cc) |
| valve-train | DOHC with i-VTEC |
| compression-ratio | High Compression (approximately 11.0:1) |
| configuration | Inline-4 |
| block-material | Aluminum |
| head-material | Aluminum |
Sourcing, transmission inclusion, compression ratio, and price tier. This JDM Honda K24A package (vaz68) is sourced from JDM Accord Euro-R, JDM Acura TSX, or Accord Type-S donors, includes a matched 6-speed manual transmission, uses the high-compression K24A3 variant (11.0:1), and is positioned at a budget price point ($650) as an as-is JDM clip core. The standard Honda K24 listing (vaz64 at $999) is a fully-tested long-block-only listing with comprehensive inspection paperwork and US-market variant identification (K24A1, K24A2, K24A4, K24A8, K24Z3, K24Z7). For K-swap builders wanting the complete JDM drivetrain at the lowest price, this listing is the right choice. For buyers wanting full inspection documentation on a standalone engine, see vaz64.
The highest-compression factory K24 variant (11.0:1). The K24A3 was the JDM-spec K24 used in the Japan-only Honda Accord Euro-R (2002 to 2008) and select JDM Acura TSX (Honda Accord JDM) variants. It produces approximately 190 to 200 hp and features higher compression than the US-market K24A4 (industrial workhorse), K24A2 (TSX performance variant at 10.5:1), or K24A8 (mild Accord update). The K24A3's 11.0:1 compression requires premium 91-plus octane fuel for safe operation. The K24A3 is the most desirable factory K24 for naturally-aspirated builders who want maximum compression without aftermarket pistons.
The complete JDM 6-speed manual transmission as matched to the engine. The transmission is shifted through all 6 forward gears and reverse before shipping, with engagement feel assessed, case inspected for cracks, and shipped together with the engine as a matched pair from the same JDM donor. NOT included: clutch disc (the transmission is dry, no clutch), flywheel, pilot bearing, throwout bearing, shifter handle, transmission and motor mounts, axles, and shift linkage. Plan to source these components separately or with your K-swap kit.
Japanese Domestic Market imports. JDM engines and transmissions are sourced from vehicles originally sold in Japan that have been retired from service. Japan's strict vehicle inspection (Shaken) system makes it economical to retire vehicles at lower mileage than typical US retirement points, so JDM engines often have lower mileage than equivalent US-market engines. JDM engines are sold as a matched engine + transmission 'clip' package, often without verifiable donor mileage but typically in better condition than equivalent US-market high-mileage cores. JDM components may be specified differently from US-market equivalents (different cam profiles, different ECU calibration), which is part of their appeal.
Yes with the matching ECU and harness. The K24A3 (JDM) is closely related to the K24A2 (US-market Acura TSX) and bolts directly into K-series chassis. For installation in a US-market Accord or TSX, you need either the JDM Euro-R / Type-S ECU calibration (which may not be street legal in all states due to JDM emissions calibration), or a reflashed US-market K24A2 ECU tuned for the K24A3 cam profiles. Many buyers use Hondata KPro or aftermarket standalone ECU for K24A3 installations to bypass the JDM/USDM ECU compatibility issues.
Yes with appropriate K-swap hardware. The 6-speed manual transmission is from the JDM Accord Euro-R / TSX donor and uses the standard K-series bellhousing pattern, allowing it to bolt to any K24 (or K20) engine. For K-swap into Civic EG, EK, EM, EP, or Integra DC2 chassis, the swap requires K-swap motor and transmission mounts (Hasport, Innovative Mounts, Hybrid Racing), K-series-compatible axles, a K-series shift linkage, and a K-series throttle cable or drive-by-wire conversion. Complete swap kits are widely available.
Higher compression and JDM-spec cam profiles. The K24A2 (US TSX) uses 10.5:1 compression and revised intake cams optimized for US emissions compliance and broad torque. The K24A3 (JDM Accord Euro-R) uses 11.0:1 compression and slightly more aggressive cam profiles optimized for JDM emissions standards (less restrictive). The result is a higher peak power output (190 to 200 hp vs the K24A2's 200 to 205 hp), better high-RPM character, and a more responsive throttle. For pure naturally-aspirated performance, the K24A3 is the most desirable factory K24 variant.
No. There is no core return required for either the engine or the transmission.
2 reviews for JDM Honda K24A 2.4L DOHC VTEC Engine with 6-Speed Manual Transmission | OEM Used High Compression K24A3
Related products
Tomas R. –
Got the JDM K24A3 + 6-speed package for a Civic EK hatch K-swap. Engine + transmission shipped as matched pair from a JDM Accord Euro-R donor, all 4 cylinders compression tested, 6-speed shifted through all gears clean. Cross-link to vaz64 mentioned up front in case I wanted the standalone tested long block — appreciated the transparency about which listing fits which builder.
Hiroki N. –
Sourced the JDM K24A3 combo for an Integra DC5 with the original 5-speed swapped for the JDM 6-speed. K24A3 11.0:1 compression confirmed (not the lower-compression K24A4), JDM clip sourcing explained honestly. Transmission internal inspection clean. Foundation for a high-compression naturally-aspirated build.