Engine Toyota 1KZ

In 1993, the 1KZ engine was created and put into mass production. Until now, it is considered the most successful version of the diesel engine. This Toyota engine was able to displace 2L-TE diesel engines from the market in a short time.

Diesel engine 1KZ-T is a 4-cylinder engine equipped with water cooling and mechanical injection pump. The turbocharged diesel engine 1KZ-TE is equipped with an electronic injection pump. In this case, numerous data from the built-in sensors are used. 1KZ may seem complicated, but in fact, for a specialist it is not difficult to repair. Replacing the crankshaft or any attachment is easily accomplished in a workshop.


Production years 1992-2003
Displacement, cc 2982
Fuel system direct injection
Power output, hp 125/3600 (1KZ-T)
130/3600 (1KZ-TE)
145/3600 (1KZ-TE)
Torque output, Nm 287/2000 (1KZ-T)
332/2000 (1KZ-TE)
343/2000 (1KZ-TE)
Cylinder block cast iron R4
Block head aluminum 8v
Cylinder bore, mm 96
Piston stroke, mm 103
Compression ratio 21.2
Features no
Hydraulic lifters no
Timing drive belt and gears
Phase regulator no
Turbocharging Toyota CT12B
Recommended engine oil 5W-30, 5W-40, 10W-30, 10W-40, 15W-40
Engine oil capacity, liter 7.7 (1KZ-T)
7.0 (1KZ-TE)
Fuel type diesel
Euro standards EURO 1/2 (1KZ-T)
EURO 2/3 (1KZ-TE)
Fuel consumption, L/100 km (for Toyota 4Runner 1998)
— city
— highway
— combined
Engine lifespan, km ~350 000
Weight, kg 275 (1KZ-T)
280 (1KZ-TE)

Frequent problems

For 1KZ, the most relevant problems with the cylinder head. The head itself does not have a tendency to crack, and such problems can be caused by temperature conditions, therefore, it is necessary to monitor the cooling system and the indicators of the sensors.

In addition, it must be borne in mind that:

  • coolant likes to disappear, which can lead to overheating;
  • it is necessary to adjust the thermal clearances of the valves every 40 thousand km;
  • the resource of the timing belt usually does not exceed 100,000 km; in the event of a break, the valves bend.

9 thoughts on “Engine Toyota 1KZ”

  1. Francis Kobino

    I have a super custom 1kz diesel engine. I changed the timing belt at 300000km but the warning light Tbelt have refused to go off. Pliz advise thank you.

  2. i replaced a new turbo and wiring changed due to water damage .but still check light come

  3. Moses kirui Naibei

    My 1Kz engine was overhauled & after short time smock & oil was coming from the exuose, what could be the problem?

  4. Excellent engine. Just keep an eye on the timing beltas well especially if you didn’t replace it with an original belt. It’s breaking will make you spend at least 700 dollars to replace the cylinder head, valves etc

  5. Excellent engine, I have a 1996 KZJ71 Land Cruiser Prado SX (Japan imported) with 160,000 km and this engine runs great.

    Regular oil + filter changes and keeping an eye on coolant should keep this baby going for a while.

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