NISSAN QR25DE CYL HEAD

High-quality replacement for enhanced engine performance and reliability. The ATK Performance Nissan QR25DE Cylinder Head is designed to provide superior performance and reliability for your vehicle. This cylinder head is engineered to meet or exceed OEM specifications, ensuring a precise fit and optimal functionality. Constructed with high-quality materials, it offers durability and longevity, making it a dependable choice for engine repairs or rebuilds. The design of the cylinder head promotes efficient airflow, contributing to improved engine performance and efficiency. The QR25DE is Nissan’s long-running 2.5-liter naturally aspirated 4-cylinder engine. With up to 188 horsepower, front- or all-wheel drive availability, and excellent fuel economy, this engine is designed to deliver balanced everyday performance with low maintenance costs. It features Continuously Variable Valve Timing Control (CVTC), Multi-Point Fuel Injection (MPI), and lightweight aluminum alloy construction for both the block and cylinder head. The QR25DE engine has been in production since 2001 and received upgrades in 2007, including a larger diameter single path resin intake manifold, revised piston crown shape for higher compression, repositioned balancer shafts, redesigned camshaft profile, reinforced connecting rods, and an additional engine mount.