Nissan Sentra Rogue QR25DE 2.5L L4 Engine 2007-2015 Sentra and Rogue 2007-2015

Description

Experience quiet highway cruising and eliminate excessive oil consumption with the Nissan QR25DE 2.5L Remanufactured Engine across heavy fleet operations. This 2.5L 4-Cylinder 16-Valve DOHC long block features intake variable timing control and JA0 casting identifiers. Diamond plateau honing eliminates cylinder wall glazing. Technicians must fill the oil filter with fresh lubricant before initial cranking to prevent camshaft scuffing.

Die-cast aluminum alloy constructs the cylinder block bearing QR25DE and JA0 casting marks on the passenger side, housing wear-resistant cast iron cylinder liners. A micro-polished JA0 forged steel crankshaft rotates in align-honed main bearing saddles below a 16-Valve DOHC aluminum cylinder head. Dry engine mass measures 220 lbs. The shipping crate envelope spans 36in length, 36in width, and 36in height, with a 4.9 quarts oil capacity in the pan.

Key Features of Nissan QR25DE

Fleet repair operations buy Nissan QR25DE 2.5L remanufactured engine assemblies to restore worn crossovers and compact sedans to factory horsepower and emissions standards. This precision long block replaces tired powertrains in front-wheel-drive and all-wheel-drive configurations.

• Intake camshaft VTC phaser advances cam timing to produce strong torque across low engine speeds.
• Re-machined JA0 cylinder block maintains true bore geometry to prevent piston slap and oil burning.
• Forged steel JA0 crankshaft features micro-polished journals to maximize hydrodynamic bearing life.
• Open bellhousing starter pocket provides direct fitment for original equipment transverse starters.
• Multi-layer steel cylinder head gasket withstands high combustion temperatures without distortion.
• Diamond plateau honed cylinder sleeves ensure quick piston ring seating and long-term compression seal.
• Dual overhead camshafts drive 16 valves with low-friction buckets to reduce valvetrain parasitic resistance.

Dyno Load Precision Machining Tolerances

Dynamometer load cells confirm 170HP at 6,000 RPM and 175 ft-lbs torque at 4,400 RPM on unleaded gasoline. Crankshaft main journal runout measures within 0.0003in TIR along precision-ground bearing pins. Connecting rod oil clearances hold at 0.0013in to maintain hydrodynamic wedge formation under heavy highway acceleration. Sump lubrication pressure sustains 60 PSI at 3,000 RPM with coolant stabilized at 195°F. Cylinder compression checks record 180 PSI across all four cylinders, confirming concentric valve seat contact and tight piston ring end-gap clearances.

Vehicle Fitment Drivetrain Guide

This QR25DE long block fits 2007 to 2011 Nissan Sentra models built from February 2007 and 2008 to 2015 Nissan Rogue crossovers built from August 2007. The open starter pocket matches CVT and 6-Speed manual transaxles. Casting identification JA0 marks the block and cylinder head. This engine does not fit early pre-2007 Sentra platforms, rear-wheel-drive Frontier pickups, Altima sedans requiring closed starter bellhousings, or turbocharged Juke models.

Installation Protocol Service Schedules

Electronic drive-by-wire throttle linkages require zero physical cable adjustments during subframe installation. Mechanics must inspect catalytic converter pre-filters to prevent ceramic dust ingestion into combustion chambers. Never drop this naturally aspirated production long block into custom high-boost turbo setups running over 8 PSI on stock cast compression pistons.

• Drain initial break-in engine oil and swap the spin-on filter after 500 operating miles.
• Inspect serpentine accessory drive belt tension and coolant level every 10,000 road miles.
• Change motor oil and filter every 3,000 miles using certified 5W-30 synthetic engine oil.

Warranty Terms Core Return Policy

Warranty coverage provides a 3-Year Unlimited-Mile replacement guarantee on internal lubricated engine mechanical parts. Return your like-for-like core within 30 days using prepaid freight documentation to claim your core credit. The secure crate contains the remanufactured long block, complete timing assembly, oil pan, and shop installation guides.