Honda K24 Engine for Sale | OEM Used K24A 2.4L i-VTEC DOHC Inline-4 K-Series

Description

About the Honda K24 Engine

The Honda K24 Engine is one of the beasts from Honda K family of engines, and it would be fair to call the K24 the most beloved engine in the family for car culture. Introduced in 2001, the K24 became the workhorse Inline-4 across Honda mid-size lineup and the favorite swap engine for older Honda enthusiasts. This Honda K24 Engine for sale at Part Nests is fairly used, but make no mistake, this used K24 Engine delivers the ultimate reliability and brings out the top performance from your car.

Application of the Honda K24 Engine

• Honda Accord: The K24 is found in various Honda Accord models from 2003 to 2017, providing a balance of power and fuel efficiency suitable for a midsize sedan. Variants include K24A4 (2003 to 2007 Accord, 160 hp), K24A8 (2006 to 2007 Accord, 166 hp), and K24Z3 (2008 to 2012 Accord, 177 to 190 hp).
• Honda CR-V: Torque output and reliability of the K24 make it perfect for the CR-V SUV. Variants include K24A1 (2002 to 2006 CR-V, 160 hp) and K24Z6 (2007 to 2014 CR-V, 166 to 185 hp).
• Honda Element: The K24 offered a perfect blend of power and versatility for one of the most unique compact crossover SUVs ever sold in North America. K24A4 (2003 to 2011 Element).
• Acura TSX: For sporty driving, the K24A2 (2004 to 2008 TSX, 200 to 205 hp) is the most desirable K24 variant, with revised intake, exhaust, cams, and ECU calibration. The K24Z3 (2009 to 2014 TSX) continued the platform.
• Honda Civic Si: K24Z7 (2012 to 2015 Civic Si, 201 hp) powered the 9th generation Civic Si, marking the K24 first appearance in a Civic Si chassis.
• Honda Odyssey: The K24 was used in some Odyssey minivan trims, providing ample power for carrying passengers and cargo.
• JDM Accord Euro-R / Acura TSX High-Comp: K24A3 (Japan-only Accord Euro-R, around 190 to 200 hp with 11.0:1 compression) is the JDM-spec high-output variant prized by import enthusiasts.
• Engine Swaps: Due to popularity and compatibility with the broader K-series ecosystem, the K24 is the most popular swap engine in modern Honda enthusiast culture. K-swaps into Civic EG / EK / EM / EP, Integra DC2 / DC5, S2000, and even non-Honda chassis are extremely common.

K24 Variant Breakdown

Key Features of the Honda K24 Engine

• Displacement: 2.4 liters provides a great middle ground between power and fuel efficiency. The longer stroke (99mm) versus the K20 86mm stroke gives the K24 superior low-end and mid-range torque, making it preferable for street driving over the higher-RPM K20.
• i-VTEC: Honda iconic intelligent Variable Valve Timing and Lift Electronic Control system. The K24 uses i-VTEC to optimize valve timing AND lift, providing strong torque output at low RPM and electric power delivery at the top of the rev range.
• Aluminum Construction: Block and head are aluminum, reducing weight while maintaining strength. The K24 is approximately 310 to 350 lbs depending on variant, very light for its 2.4L displacement.
• DOHC Configuration: Dual overhead camshafts provide better intake and exhaust valve control and improved engine breathing across the RPM range.
• Multi-Point Fuel Injection (MPFI): Sequential MPFI delivers precise fuel metering to each cylinder for fuel efficiency and clean combustion. Note: Standard K24A and K24Z variants use MPFI port injection. The newer K24W (Earth Dreams) introduced direct injection on Accord starting 2013, but the standard K24 listed here is MPFI.
• Engine Management System: Modern Honda PCM with electronic throttle, ETC, and OBD-II diagnostics provides factory smooth operation and enables aftermarket tuning with Hondata, KPro, or aftermarket standalones for performance builds.
• Reliability: The K24 is well-known for Honda renowned reliability. Properly maintained K24 engines routinely log 200,000-plus miles on the original short block. The aluminum block, sleeved iron liners, forged crankshaft, and chain-driven cams all contribute to long life.
• Chain-Driven Cams: Unlike timing-belt engines, the K24 uses a maintenance-free timing chain that lasts the life of the engine with proper oil maintenance.

K-Series Swap Compatibility

The K24 biggest claim to fame in enthusiast culture is the K-swap: replacing older D-series, B-series, F-series, or H-series engines in earlier Hondas with the modern K-series. The K24 is preferred over the K20 for street swap projects because:

• More torque: 162 to 170 lb-ft vs the K20 142 lb-ft
• More displacement: 2.4L vs 2.0L gives stronger pull through the entire RPM range
• Easier to find used: The K24 was sold in millions of Accords / CR-Vs / Elements / TSXs, making used cores plentiful
• Hybrid head builds: Top builders combine a K24 short block with a K20A or K20Z3 head for the best of both: K24 displacement and torque with K20 high-RPM head flow

Signs You Need a Replacement K24

• Loss of compression on one or more cylinders
• Excessive oil consumption (a known issue on high-mileage K24Z3 and later variants)
• Timing chain rattle on cold start (chain stretch / tensioner wear)
• VTC actuator rattle (the variable timing control unit on the intake cam is a known wear item)
• Connecting rod knock under load
• Donor Accord, CR-V, Element, TSX, or Civic Si has been totaled and the engine is being moved
• K-swap project requiring fresh starting point
• Existing K24 high-mileage and showing wear

Known K24 Issues We Inspect Before Shipping

• Timing chain stretch: A documented K-series wear item, particularly on high-mileage units. Inspected during run test.
• VTC actuator rattle: The variable timing control unit on the intake cam can rattle on cold start when worn. Listened for and disclosed.
• Oil consumption (K24Z3 and later): Some 2008-plus K24 variants developed piston ring oil consumption issues. Assessed via compression and visual inspection.
• Engine mount rubber degradation: Inspected for excessive movement under load.
• Cylinder bore condition: Inspected through bore for cylinder wall scoring or wear.
• i-VTEC system function: Verified by spinning engine to engage VTEC where possible.
• Variant authentication: Confirmed by valve cover, intake manifold style, ECU stamp, and block code.

What Ships and What Does Not

K24 Myth Busters

• Myth: You will not find big power gains from a naturally-aspirated K24.
• Reality: Stock K24 engines are highly tunable. Bolt-on modifications (intake, exhaust, header, ECU tune via Hondata or KPro) can easily produce 220 to 250 hp from a stock K24A2 short block. K-swap builds with K20 hybrid heads, individual throttle bodies, and aggressive cams can produce 280 to 320 hp naturally aspirated. Forced induction takes K24 builds well over 500 hp on stock internals.
• Myth: Turbocharging or supercharging a K24 makes it less reliable.
• Reality: When forced induction is done properly with quality components, professional installation, and correct tuning, reliability can match or exceed naturally-aspirated configurations. The K24 robust bottom end (forged crank, strong rods, sleeved aluminum block) handles boost well. Many enthusiasts run 300 to 500 hp boosted K24s for years without issue.
• Myth: Aftermarket modifications void your warranty.
• Reality: The Magnuson-Moss Warranty Act regulates manufacturer warranties. A dealership cannot blanket-deny warranty repairs simply because aftermarket parts are installed. They must prove the modification caused the specific problem they are refusing to repair. That said, a K24 sold here is a used core for repower or swap, the original Honda warranty is long expired.
• Myth: Big power gains require a complete engine rebuild.
• Reality: Bolt-on modifications (cold air intake, performance exhaust, ECU tune via Hondata KPro or RaceMe) can add 20 to 40 hp without internal engine work. These cost-effective modifications fit enthusiasts who want a meaningful performance increase without major engine work.

Vehicle Compatibility

The K24 fits the following vehicles directly (variant-specific):

Inspection Workflow

Every used K24 we ship goes through this process:

• Compression test across all 4 cylinders, pressure per cylinder recorded
• Variant authenticated (K24A1, K24A2, K24A4, K24A8, K24Z3, K24Z7) by valve cover, intake style, and block code
• i-VTEC system function verified
• VTC (Variable Timing Control) actuator function tested
• Timing chain stretch inspected (known wear item)
• Cylinder bore condition inspected
• Donor application photographed and documented
• Approximate mileage documented when verifiable

Where mileage is verified, it is shared. Where mileage cannot be confirmed, we disclose openly before payment.

Why Buy From Part Nests

• All 4 cylinders compression tested, results before you pay
• K24 variant authenticated (A1, A2, A4, A8, Z3, Z7)
• i-VTEC system function verified
• VTC actuator function tested
• Timing chain stretch inspected
• Donor application documented (Accord, CR-V, Element, TSX, Civic Si)
• Free freight pallet to all 50 states, no hidden fees
• No core charge, keep your old engine
• 15 day replacement warranty on internal defects
• Call (240) 306-7051 to confirm K24 variant (K24A1, K24A2, K24A4, K24A8, K24Z3, K24Z7, K24W), donor application, and K-swap compatibility before ordering