Nissan QR25DE EngineThe Nissan QR25DE engine is a 2.5 L (2488 cc) engine with cast steel connecting rods, a steel timing chain, counter-rotating balance-shafts, and an aluminum intake  manifold. It features 2.5-liter DOHC 16-valve 4-cylinder, 175 hp @ 5,600 rpm power, 180 lb-ft @ 3,900 rpm torque, 9.5:1 compression, Continuously Variable Valve Timing Control System (CVTCS), Variable induction system, Iridium-tipped spark plugs, Electronic drive-by-wire throttle, Engine Balancer System, direct ignition (coil-on-plug), and sequential Multi-point EGI (EFI). The following engine compartment diagram shows the 2009 Nissan Altima QR25DE engine. (image from: wikipedia.org)

2009 Nissan Altima QR25DE Engine Compartment Diagram

Nissan Altima QR25DE engine compartment:
1. Power steering fluid reservoir
2. Engine oil filler cap
3. Brake fluid reservoir/Clutch fluid reservoir (M/T model)
4. Air cleaner
5. Fuse block
6. Battery
7. Fuse/Fusible link box
8. Engine oil dipstick
9. Radiator cap
10. Drive belt location
11. Engine coolant reservoir
12. Windshield washer fluid reservoir

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