Acura RDX 2.3 Turbo K23A1 Engine for Sale

The Acura RDX 2.3L Turbo K23A1 is a four-cylinder gasoline engine developed for the first-generation Acura RDX. It combines Honda's i-VTEC technology with turbocharging and an air-to-air intercooler to deliver responsive acceleration and strong engine performance.

This engine is a suitable replacement option for owners experiencing engine failure, excessive wear, internal damage or other mechanical problems with their original K23A1 powertrain.

Specifications are based on Acura's published factory information. Actual replacement-engine configuration and included accessories depend on the supplied unit.

Compatibility / Fitment Notes

The K23A1 2.3L turbocharged engine was designed for the first-generation Acura RDX.

Primary vehicle compatibility:

• 2007 Acura RDX 2.3L Turbo

• 2008 Acura RDX 2.3L Turbo

• 2009 Acura RDX 2.3L Turbo

• 2010 Acura RDX 2.3L Turbo

• 2011 Acura RDX 2.3L Turbo

• 2012 Acura RDX 2.3L Turbo

The K23A1 engine is associated with both front-wheel-drive and Super Handling All-Wheel Drive (SH-AWD) versions offered during the first-generation RDX production period.

However, buyers should verify the original engine code, vehicle identification number (VIN), transmission configuration, drivetrain and engine connections before ordering.

Important fitment considerations:

• Confirm that the replacement engine carries the K23A1 engine code.

• Compare the engine block and cylinder head configuration.

• Check turbocharger, intercooler and intake system compatibility.

• Verify wiring harness and sensor connections.

• Confirm compatibility with the original ECU and fuel system.

• Check whether the replacement comes as a complete engine or a long block.

• Verify which accessories and external components are included.

The K23A1 should not automatically be treated as interchangeable with other Honda K-series engines. Its turbocharged configuration has specific design differences that affect compatibility.

Engine Configuration

The Acura RDX K23A1 features an inline four-cylinder engine layout with a double overhead camshaft (DOHC) cylinder head and 16 valves.

Its i-VTEC system controls intake valve timing and lift to support engine performance across different operating conditions.

The engine also features an aluminum cylinder block with cast-in iron cylinder liners, a forged-steel crankshaft and specially designed connecting rods to accommodate the demands of turbocharged operation.

These engineering features make the K23A1 a distinctive engine within the Honda K-series family.

Engine Displacement

The K23A1 has a displacement of 2.3 liters (2,300cc).

Its factory bore measures 86 mm, while the stroke measures 99 mm. The engine also has a compression ratio of 8.8:1.

This displacement, combined with its turbocharger and intercooling system, allows the Acura RDX to produce substantial torque from its four-cylinder powertrain.

Fuel Type

The Acura RDX K23A1 operates on gasoline and is designed to use premium unleaded fuel.

When purchasing a replacement engine, buyers should ensure that the fuel delivery components and engine management system are compatible with the vehicle's original specifications.

Aspiration / Induction

The K23A1 uses a turbocharged and intercooled induction system.

Its variable-flow turbocharger works alongside an air-to-air intercooler to supply compressed, cooled intake air to the engine.

The combination of turbocharging and i-VTEC technology contributes to the engine's responsive acceleration and factory-rated performance.

Power Output

The factory-rated power output of the Acura RDX K23A1 is:

HORSEPOWER

240 hp

TORQUE

260 lb-ft

These factory specifications make the K23A1 an attractive replacement option for owners who want to maintain the original engine performance of their Acura RDX.

Torque

The K23A1 produces 260 lb-ft of torque at 4,500 rpm.

Its turbocharged configuration provides the engine with strong pulling performance, making it suitable for the Acura RDX's SUV platform.

When replacing an existing engine, maintaining the original K23A1 specification helps preserve the vehicle's intended powertrain characteristics.

Years / Generation

The K23A1 engine belongs to the first-generation Acura RDX, covering the 2007–2012 model years.

It was used throughout this generation before Acura introduced a different engine configuration for the second-generation RDX.

Buyers should therefore confirm that their vehicle falls within the correct production range before purchasing.

Why Choose an Acura RDX 2.3 Turbo K23A1 Replacement Engine?

Choosing the correct replacement engine is essential for restoring your vehicle's performance and maintaining its original powertrain configuration.

The Acura RDX K23A1 offers several important features:

• Original engine application: Designed for the first-generation Acura RDX.

• Turbocharged performance: Factory-equipped with a variable-flow turbocharger.

• i-VTEC technology: Features Honda's variable valve timing and lift technology.

• Four-cylinder configuration: A 2.3-liter inline-four engine.

• Factory-rated performance: Produces 240 horsepower and 260 lb-ft of torque.

• Replacement suitability: An option for Acura RDX owners requiring an engine replacement.

Buy Acura RDX 2.3 Turbo K23A1 Engine Today

Looking for an Acura RDX 2.3 Turbo K23A1 engine for sale? Finding the correct replacement engine starts with identifying your vehicle's original engine code and confirming the required configuration.

Whether you need a complete used K23A1 engine, a replacement assembly or an engine for a damaged powertrain, selecting the correct unit is important for a successful replacement.

Before placing your order, confirm the engine's condition, mileage (if used), included components, availability and warranty terms.

Contact our sales team today with your Acura RDX model year, VIN and engine requirements to check availability and receive a purchase quotation.

We can help you identify the appropriate K23A1 replacement engine for your vehicle and clarify the components included with the available engine assembly.

Frequently Asked Questions

1. What vehicles use the Acura K23A1 engine?

The K23A1 2.3L turbocharged engine was fitted to the 2007–2012 first-generation Acura RDX.

2. How much horsepower does the K23A1 engine produce?

The factory-rated output is 240 horsepower at 6,000 rpm.

3. How much torque does the Acura RDX K23A1 produce?

It produces 260 lb-ft of torque at 4,500 rpm.

4. Is the K23A1 a turbocharged engine?

Yes. It features a variable-flow turbocharger and an air-to-air intercooler.

5. What fuel does the K23A1 use?

It uses gasoline, with premium unleaded fuel recommended by Acura.

6. Will a K23A1 engine fit every Acura RDX?

The K23A1 is intended for first-generation 2007–2012 RDX applications. Always verify the engine code, VIN, drivetrain and transmission configuration before purchasing.

7. Does a replacement K23A1 engine come with a turbocharger?

This depends on the seller and engine package. Confirm whether the turbocharger, intercooler, intake manifold, ECU and other accessories are included before ordering.

Primary vehicle compatibility:

• 2007 Acura RDX 2.3L Turbo

• 2008 Acura RDX 2.3L Turbo

• 2009 Acura RDX 2.3L Turbo

• 2010 Acura RDX 2.3L Turbo

• 2011 Acura RDX 2.3L Turbo

• 2012 Acura RDX 2.3L Turbo

The K23A1 2.3L turbocharged engine was designed for the first-generation Acura RDX.

Primary vehicle compatibility:

• 2007 Acura RDX 2.3L Turbo

• 2008 Acura RDX 2.3L Turbo

• 2009 Acura RDX 2.3L Turbo

• 2010 Acura RDX 2.3L Turbo

• 2011 Acura RDX 2.3L Turbo

• 2012 Acura RDX 2.3L Turbo

The K23A1 engine is associated with both front-wheel-drive and Super Handling All-Wheel Drive (SH-AWD) versions offered during the first-generation RDX production period.