High-performance 2.5L inline-6 engine imported from Japan 🇯🇵. Compression-tested and ready for installation — engineered for Skyline GTS-4 platforms that demand strong performance, classic RB durability, and proven long-term reliability.
Engine code: RB25
Configuration: Inline-6 DOHC 24-valve
Displacement: 2.5L (2498 cc)
Mileage: 45,000 – 65,000 miles (verified low-mileage JDM import)
Compression ratio: ~9.0 : 1 (factory spec; verified consistent compression across cylinders)
Fits:
The RB25 (GTS-4) is a respected RB-series performance engine, known for its smooth power delivery, robust iron-block construction, and excellent tuning potential. Ideal for authentic restorations, performance street builds, or OEM-correct JDM replacements.
Fitment list is provided for reference only. Please confirm compatibility with a certified mechanic before purchasing (to verify your exact engine model), or contact us and we’ll help you confirm fitment.