Cylinder 6 location depends on which engine your Grand Cherokee uses, but on the common 3.6L V6 found in many models, cylinder 6 is the rear-most cylinder on the passenger-side bank. Other engines in the lineup place cylinder 6 in a similar right-bank position or nearby, so verify with your model year’s diagram.
Engine variants and cylinder numbering
3.6L Pentastar V6
The 3.6L Pentastar V6 has two banks: the driver-side bank houses cylinders 1, 3, and 5, while the passenger-side bank houses cylinders 2, 4, and 6. Cylinder 6 sits at the rear of the passenger-side bank, closest to the firewall. Access to the spark plug and related components can vary by year and intake configuration.
5.7L Hemi V8
On the 5.7L Hemi V8, cylinders are typically numbered with 1–4 on the left bank and 5–8 on the right bank when viewed from the front. Cylinder 6 is on the right bank and is the second cylinder from the front, toward the middle of the engine’s right side. The spark plug location will be beneath the coil pack at the top of that head.
3.0L EcoDiesel
The 3.0L EcoDiesel also uses a two-bank layout, commonly with odd numbers on one bank (1, 3, 5) and even numbers on the other (2, 4, 6). Cylinder 6 is the rear-most cylinder on the passenger-side bank, near the firewall. Access to the plug and coils will depend on the year and accessory layout.
Locating cylinder 6 in the engine bay
To identify cylinder 6, confirm your exact engine type and then use the bank-based numbering. For many layouts, cylinder 6 is on the right-hand (passenger) bank. It’s typically the rear-most cylinder on that bank for V6 engines and the second-from-front on the right bank for V8 engines. If you’re unsure, refer to the engine diagram or the service manual for your year/model.
- Identify your engine variant (3.6L, 5.7L, or 3.0L EcoDiesel) using the VIN or the engine badge under the hood.
- On V6 models, locate the right-hand (passenger) bank labeled 2-4-6 from front to back; cylinder 6 is the rear-most on that bank.
- On V8 models, locate the right-hand bank labeled 5-8 from front to back; cylinder 6 is the second from the front on that bank.
- When in doubt, consult the owner’s manual or a model-year-specific diagram under the hood for a precise map.
Conclusion: By identifying the engine variant and following the bank-based numbering, you can reliably locate cylinder 6 across Grand Cherokee engines. Always verify with the exact diagram for your model year to ensure accuracy.
Summary
Cylinder 6 location varies with the engine: 3.6L V6 models typically place it as the rear-most cylinder on the passenger-side (right) bank; the 5.7L V8 places cylinder 6 on the right bank, usually second from the front; EcoDiesel follows a similar right-bank arrangement. When in doubt, check the engine diagram under the hood or the official service manual for your exact year and model.