NISSAN 2.5L Engine

Part Type:  Remanufactured Engine Assembly (Factory Spec)

This remanufactured NISSAN 2.5L (QR25DE) engine includes the following enhancements from Fraser Engines:

• Bore and hone all cylinders to OEM clearances (We check all clearances within .0001 of inch),
• Decking cylinder head(s) and block for straightness,
• Cutting valve seats and valves to proper degree,
• Line boring/honing crankshaft/camshaft tunnels,
• Ground & polish crankshaft, new or remanufactured camshaft(s),
• New main bearings, rod bearings, pistons, piston rings, lifters, pushrods (if equipped), timing components, oil pump, head bolts,
• All new internal gaskets and seals.
• All finishing gaskets are included (MAY VARY PER APPLICATION).

NISSAN 2.5L (QR25DE) Engines

The Nissan 2.5L (QR25DE) is a four-cylinder engine designed specifically for vehicles from the Nissan Motor Corporation.

The base engine consists of:

An all-aluminum engine block and cylinder head
Dual Overhead Camshafts (DOHC)
Variable Valve Timing (VVT)
Sequential multi-port fuel injection

The engine specifications include:

• A displacement of 152.5 cubic inches (2,488 cubic centimeters)
• 3.50 in x 3.94 in (89 mm x 100 mm) cylinder bore and piston stroke
• 9.6:1, 9.7:1, or 10.5:1 compression ratio
• 175 to 188 horsepower (130 to 140 kW) at 5,600 to 6,000 rpm
• 180 to 180 lb-ft (244 to 244 Nm) of torque at 3,600 to 4,000 rpm

Nissan introduced the QR25DE engine in 2002 as a replacement for the KA24DE. It was initially used in the Altima, and later in the Sentra, Rogue, and X-Trail. This engine was praised for its reliability, fuel efficiency, and low emissions.

The QR25DE engine is equipped with a timing chain instead of a timing belt, which eliminates the need for periodic belt replacements. It also features an electronic drive-by-wire throttle system, which provides a more precise throttle response and improves fuel efficiency.

Overall, the Nissan 2.5L engine is a versatile and reliable powerplant that has been widely used across many Nissan models.