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2AZ FE engine Specs
The 2AZ‑FE is a well-known Toyota 2.4-liter inline-4 engine, part of the AZ engine family. It was widely used in various Toyota and Lexus vehicles between 2000 and 2015. Here’s a comprehensive overview of its specifications, known issues, and maintenance advice.
🔧 2AZ‑FE Engine Specifications
| Specification | Detail |
|---|---|
| Engine Code | 2AZ‑FE |
| Displacement | 2.4 L (2,362 cc) |
| Configuration | Inline-4, DOHC, 16-valve |
| Block Material | Aluminum Alloy |
| Head Material | Aluminum Alloy |
| Bore × Stroke | 88.5 mm × 96.0 mm |
| Compression Ratio | 9.6:1 (VVT-i) / 9.8:1 (later models) |
| Fuel System | Sequential multi-port fuel injection |
| VVT-i | Yes, on intake camshaft only |
| Max Power | ~160–170 hp @ 5,600 rpm |
| Max Torque | ~160 lb-ft (220 Nm) @ 4,000 rpm |
| Timing System | Chain-driven (not belt) |
🚗 Common Applications
The 2AZ‑FE was used in:
- Toyota Camry (2002–2009)
- Toyota RAV4 (2001–2008)
- Toyota Highlander (2001–2007)
- Toyota Solara (2004–2008)
- Scion tC (2005–2010)
- Toyota Previa/Estima (Asia)
- Toyota Harrier (JDM)
- Lexus ES240 (China)
- Toyota Alphard (Japan)
🛠️ Known Issues & Fixes
1. Excessive Oil Consumption
- Years Affected: Mostly 2007–2009 models
- Cause: Worn piston rings and poor ring design
- Fix: Replace pistons and rings with updated parts; Toyota issued a TSB (Technical Service Bulletin) and offered some coverage under extended warranties.
2. Head Bolt Thread Failure
- Symptom: Coolant leaks, head gasket failure
- Cause: Aluminum block threads can strip at the head bolt holes
- Fix: Helicoil or Time-Sert repair kits are used to reinforce/repair threads
3. Motor Mount Wear
- Front engine mount is prone to cracking or breaking—watch for excess engine movement or vibration.
🧰 Maintenance Tips
| Item | Interval |
|---|---|
| Engine Oil | 5,000–8,000 km (3,000–5,000 mi) with high-quality synthetic (especially if it burns oil) |
| Timing Chain | No regular replacement needed (check if noisy or loose) |
| Spark Plugs | Every 96,000 km (60,000 mi) |
| Coolant | Every 160,000 km (100,000 mi) or 5 years |
| Valve Clearance | Inspect only if noisy |
🔩 Torque Specifications (Highlights)
| Component | Torque Spec |
|---|---|
| Cylinder Head Bolts | 25 Nm + 90° + 90° (torque-to-yield) |
| Main Bearing Bolts | 60 Nm + 90° |
| Connecting Rod Bolts | 20 Nm + 90° |
| Spark Plugs | 18 Nm (13 ft-lb) |
| Oil Drain Plug | 39 Nm |
| Intake Manifold Bolts | 21 Nm |
| Exhaust Manifold Bolts | 39 Nm |
2AZ FE engine Service Data PDF
2AZ FE engine timing marks PDF
