Item ID: 255609
Product Code: K24A
Serial Number: K24A 5300452
Year: 2007-2009
Mileage: 60,000 miles
Applications:

Will a JDM K24A replace the K24Z1 in a 2007–2009 Honda CR-V?

A compatible JDM K24A can serve as a replacement long block for 2007–2009 Honda CR-V models originally equipped with the K24Z1. However, external components can differ. Therefore, compare both engines and transfer the required USDM components before installation.

Is this engine for both FWD and AWD Honda CR-V models?

The engine long block may be applicable to compatible 2007–2009 CR-V configurations, but drivetrain-specific external components and installation requirements should be verified before ordering. Provide your VIN and drivetrain information when confirming fitment.

Is the K24A the same as a K24Z1?

No. Both belong to Honda’s K-series 2.4L engine family, but they should not be treated as completely identical assemblies. External components and vehicle-specific hardware can differ. Therefore, use the JDM K24A primarily as a replacement long block and retain your original K24Z1 components.

What components may need to transfer from my K24Z1?

Depending on the exact engine configuration, your installer may need to reuse the intake manifold, exhaust components, sensors, wiring harness, brackets, oil-pan components, accessories and other USDM-specific external hardware.

Has this K24A been compression tested?

Yes. J-Spec Auto currently lists K24A 5300452 as compression tested. For maximum transparency, individual cylinder PSI readings should also be displayed when available.

How many miles are on this JDM K24A?

J-Spec Auto lists approximately 60,000 miles for this specific engine.

What should I replace before installing a used JDM K24A engine?

Before installation, inspect and replace appropriate maintenance items while the engine remains easily accessible. Depending on condition and service history, these may include:

• Timing-chain related wear components as needed
• Timing-chain tensioner and guides as needed
• Water pump
• Thermostat
• Valve-cover gasket
• Front crankshaft seal
• Other accessible gaskets and seals
• Spark plugs
• Worn ignition components
• Accessory belt
• Engine oil
• Oil filter
• Coolant

In addition, inspect hoses, pulleys and other wear items before installation. Do not assume that used maintenance components should remain in service simply because they arrive attached to the replacement engine.

Does the Honda K24A use a timing belt or timing chain?

The K24A uses a timing chain, not a timing belt. Therefore, your technician should inspect the timing-chain system, guides and tensioner rather than performing a timing-belt service.

This is an important difference from the Subaru FAQs we’ve been using.

Should I replace the gaskets and seals before installation?

Inspect and replace appropriate accessible gaskets and seals before installing the engine. These can include the valve-cover gasket, crankshaft seal, intake and exhaust gaskets, oil-pan sealing surfaces and other accessible seals as appropriate.

Completing this work while the engine remains outside the vehicle can also reduce labor later.

Should I replace the spark plugs and ignition components?

Install new spark plugs and inspect the ignition coils, connectors and wiring before initial startup. Replace worn or questionable ignition components as necessary.

Additionally, using known-good ignition components can simplify initial startup and diagnosis.

How should I prime the K24A before the first startup?

Do not immediately start the replacement engine after installation.

First, fill the engine with the correct oil and install a new oil filter. Next, disable fuel and ignition according to the applicable Honda service procedure so the engine cannot start.

Then, crank the engine in controlled intervals to establish oil circulation before allowing combustion. Once your technician confirms proper lubrication, restore the fuel and ignition systems and proceed with the initial startup.

Avoid immediately revving the engine after startup.

How should I bleed the cooling system after installing a K24A?

Properly filling and bleeding the cooling system is essential after engine replacement.

Fill the system with the correct Honda-compatible coolant according to the applicable service procedure. Then, thoroughly purge trapped air while monitoring coolant level, engine temperature and heater operation.

As the engine reaches operating temperature, confirm proper coolant circulation and radiator-fan operation. After the engine completely cools, recheck the coolant level and inspect the system for leaks.

Do not consider the installation complete until the technician confirms stable engine temperature and proper coolant circulation.

What should I check during the first startup?

During initial startup, monitor:

• Oil-pressure operation
• Coolant temperature
• Coolant circulation
• Oil leaks
• Coolant leaks
• Fuel leaks
• Abnormal engine noises
• Misfires
• Check-engine light
• Charging-system operation
• Radiator-fan operation
• Heater operation

Furthermore, scan the ECU for diagnostic trouble codes and address any installation-related faults before returning the vehicle to normal service.

What is the recommended K24A installation checklist?

For the best installation outcome, have a qualified technician:

1. Compare the JDM K24A with the original K24Z1.
2. Transfer all required USDM vehicle-specific components.
3. Inspect and replace appropriate gaskets and seals.
4. Inspect the timing chain, tensioner and guides.
5. Inspect or replace the water pump and thermostat as appropriate.
6. Install new spark plugs and inspect ignition components.
7. Install fresh engine oil and a new oil filter.
8. Prime the lubrication system before initial startup.
9. Fill and thoroughly bleed the cooling system.
10. Confirm proper oil circulation and stable operating temperature.
11. Check carefully for oil, coolant and fuel leaks.
12. Scan the ECU for diagnostic trouble codes.
13. Recheck engine oil and coolant after the engine completely cools.

Always follow the applicable Honda factory service procedures and J-Spec Auto Sports warranty requirements.