Cylinder 4 is the rear-most cylinder in the Rogue’s 2.5-liter QR25DE inline-4 engine, located closest to the firewall when viewed from above.
Understanding cylinder numbering in the QR25DE
On the QR25DE used in the 2011 Rogue, cylinders are numbered from front to back. Cylinder 1 sits at the front of the engine (the timing belt/chain end), and cylinder 4 sits at the rear, nearest the firewall. This arrangement is standard for Nissan inline-4 engines, but always confirm with the vehicle’s service manual or a cylinder-head diagram if you need absolute certainty.
How to locate Cylinder 4 on your engine
Follow these steps to visually identify cylinder 4 under the hood:
- Open the hood and locate the front of the engine by finding the crank pulley and radiator side of the engine bay.
- Look along the top of the engine’s single cylinder row and count from front to back: 1 at the front, 2 next, then 3, with 4 at the rear near the firewall.
- When the engine cover is removed or lifted, you will see four ignition coils arranged along the valve cover; the coil farthest toward the back belongs to cylinder 4.
- Match the intake/exhaust ports or spark plug locations if you’re using a service manual diagram to confirm.
Using these steps, cylinder 4 will be the rear-most cylinder, closest to the firewall, on the QR25DE engine in a 2011 Nissan Rogue.
Summary
Cylinder 4 on a 2011 Nissan Rogue is the rear-most cylinder in the inline-4 QR25DE engine, located closest to the firewall. Numbering runs from front to back, with cylinder 1 at the front near the crank pulley and cylinder 4 at the rear.