Applicable Engine:
1KZ-T / 1KZ-TE
Applicable Brand:
TOYOTA
Applicable Car:
HI LUX / LAND CRUISER / Prado
Product parameters:
| Displacement | Fuel | Cylinder | Vale | Camshaft | Year |
| 3.0 |
Diesel
|
4 | 8 | 1 | 2000- |
Cylinder Head
Hilux Surf 1KZ-TE cylinder head Toyota 3.0 diesel head replacement Prado 90 1KZ-T
Introduction
Product NO.
| ML NO. | OEM NO. | REF NO. |
| MLG052 | 11101-69125 11101-69126 11101-69127 11101-69128 | 908780 |
| MLG053 | 11101-69175 | 908782 |
Product Information Cylinder Head
1. Product Overview
The Toyota 1KZ series diesel engines – including the 1KZ-T (mechanical injection) and 1KZ-TE (electronic injection) – are 3.0L turbocharged indirect injection (IDI) engines. They use a single overhead camshaft (SOHC)8-valve aluminum alloy cylinder head and are renowned for their torque and reliability.
However, earlier 1KZ-TE engines are also known for cylinder head cracking issues due to thermal stress, making high-quality aftermarket or upgraded cylinder heads essential for long-term durability.
2. Technical Specifications
| Item | Value |
|---|---|
| Engine Codes | 1KZ-T / 1KZ-TE |
| Displacement | 3.0L (2982cc) |
| Fuel Type | Diesel |
| Fuel System | IDI (mechanical or EFI) |
| Aspiration | Turbocharged |
| Cylinder Head Type | SOHC, 8 valves |
| Cylinder Head Material | Aluminum alloy |
| Block Material | Cast iron |
| Timing Drive | Timing belt |
| Cooling System | Water-cooled |
| Emissions | Pre-Euro to Euro II depending on model |
3. OEM Part Numbers (Examples)
| OEM Part Number | Notes |
|---|---|
| 11101-69175 | Early 1KZ-T (mechanical injection) |
| 11101-69145 | 1KZ-TE with EGR |
| 11101-69147 | 1KZ-TE EFI, updated casting |
| 11101-69125 / 11101-69126 | Euro II and export variants |
⚠ Always confirm via VIN: Porting, EGR channels, and pre-combustion chamber shapes may vary.
4. Compatible Vehicles
| Model | Engine | Production Years |
|---|---|---|
| Toyota Hilux Surf (KZN130/KZN185) | 1KZ-TE | 1993–2002 |
| Toyota Land Cruiser Prado 90 / 95 (KZJ90/KZJ95) | 1KZ-TE | 1996–2002 |
| Toyota Hiace / RegiusAce | 1KZ-TE | 1995–2005 |
| Toyota Hilux Pickup (LN/KZN series) | 1KZ-T / 1KZ-TE | 1993–2004 |
| Toyota Granvia / Touring Hiace | 1KZ-TE | 1995–2003 |
| Toyota 4Runner (export) | 1KZ-TE | 1995–2000 |
5. Product Options
| Type | Contents |
|---|---|
| Bare Head | Casting only |
| Semi-Complete | Valves, springs, valve seats |
| Fully Complete Head | Camshaft, valves, lifters, pre-installed |
✔ CNC-machined
✔ Pressure tested
✔ Pre-chamber design matched to OEM specs
✔ With or without EGR port
6. Installation Notes
- Replace head bolts (TTY) and use new MLS or composite gasket
- Verify proper valve clearance (shim or hydraulic lifters)
- Inspect for coolant passage corrosion and hot spots
- Use correct torque sequence (typically: 39Nm + 90° + 90°)
- Bleed air from the cooling system thoroughly – 1KZ engines are prone to air lock & overheating
7. Common Cylinder Head Failures & Repair Advice
| Issue | Symptom | Cause | Solution |
|---|---|---|---|
| Cracked cylinder head | Overheating, coolant loss, white smoke | Thin casting around pre-combustion chamber, poor cooling system maintenance | Replace with reinforced head (aftermarket casting with thicker combustion walls) |
| Coolant in oil | Milky oil, high coolant pressure | Cracked head, blown gasket | Pressure test head & block; replace with MLS gasket and new bolts |
| Camshaft scoring | Ticking noise, idle instability | Oil starvation or dirty oil | Replace head or resurface cam bore; change oil filter and inspect galleries |
| Warped head | Coolant leak or persistent overheating | Repeated overheat cycles | Resurface head (tolerance ≤ 0.05mm); always pressure test before reuse |
8. Export-Focused Markets
- Africa: Kenya, Nigeria, Uganda, South Africa
- Middle East: Iraq, UAE, Syria, Yemen
- Asia: Philippines, Indonesia, Pakistan, Myanmar
- Oceania: Australia, Papua New Guinea
- Latin America: Bolivia, Peru, Colombia