2004–2008 Acura TSX 2.4L 4CYL High Compression RBB4 Engine – DriveCore Auto

The 2004–2008 Acura TSX 2.4L 4CYL High Compression RBB4 Engine (K24A) represents one of the most advanced factory-tuned variants of Acura’s legendary K-series lineup. Built with DOHC i-VTEC technology and enhanced high-compression design, the RBB4 delivers both responsive power and daily reliability, making it a favorite among TSX enthusiasts and engine builders.

Perfect for direct OEM replacement or performance upgrades, this RBB4 unit ensures seamless fitment with all 2004–2008 Acura TSX models. Each engine undergoes rigorous DriveCore Auto inspections to guarantee OEM-level quality and dependability.

Engine Code: K24A – RBB4 High Compression

Displacement: 2.4L Inline-4 DOHC i-VTEC

Compression ratio: higher than standard K24A engines for stronger performance

Application: 2004–2008 Acura TSX

OEM direct fit, no modifications required

Popular choice for engine swaps, rebuilds, and performance tuning.

FAQs

What makes the RBB4 engine different from RBB1 or RBB2?The RBB4 is the most refined high-compression variant of the TSX’s K24A lineup, offering enhanced tuning and efficiency compared to earlier versions.

Is this engine a direct replacement?Yes, the RBB4 is a direct OEM fit for all 2004–2008 Acura TSX models.

Is this engine suitable for performance builds?Absolutely—the RBB4’s high compression ratio and i-VTEC system make it a strong base for NA (naturally aspirated) performance or turbo builds.

Does the engine come complete?Yes, this is a complete long block. Accessories may vary depending on inventory.