100K Service Package ('93-'02) Toyota Diesel 1KZ-TE Timing & Water Pump Maintenance

Product Overview

When it's time for routine maintenance on your 1KZ-TE diesel engine, this is the kit you want. This comprehensive 100,000-mile service package includes all essential timing belt and cooling system components needed to keep your Toyota diesel running strong for another 100K miles. This kit comprises Genuine Toyota/OEM components, including the timing belt, NTN hydraulic tensioner, NSK tensioner pulley, GMB/AISIN water pump, and low-temperature thermostat. This will give you everything you need to complete the critical 100K timing belt service and be ready for the next 100,000 miles.

Package Includes:

• Timing Belt
• Tensioner Pulley
• Hydraulic Tensioner
• Thermostat (71°C Low Temp)
• Water Pump Assembly

 

All components are Genuine Toyota OEM or premium OEM-equivalent quality from Toyota's factory suppliers (NTN, NSK, GMB, AISIN, SUN).

Key Features & Benefits

• Complete 100K Service Solution: All essential timing and cooling components in one comprehensive package for simplified ordering
• Interference Engine Protection: Prevents catastrophic valve-to-piston contact damage through complete timing system renewal
• Enhanced Cooling Performance: 71°C low-temperature thermostat provides superior cooling for modified engines, heavy towing, or hot climates
• Genuine OEM Quality: All components manufactured to Toyota specifications by premium OEM suppliers (NTN, NSK, GMB/AISIN)
• Simplified Installation: Hydraulic tensioner release pin technology and complete water pump assembly streamline professional installation
• Extended Service Interval: Quality OEM components provide reliable performance for the full 100,000-mile service interval

Technical Specifications

Timing Belt: 102 teeth x 25mm width, round tooth profile, high-strength reinforced rubber
Tensioner Pulley: NSK sealed precision bearing, cast aluminum housing
Hydraulic Tensioner: NTN automatic hydraulic with factory-installed release pin
Thermostat: 71°C (160°F) opening temperature, brass housing with wax element
Water Pump: Two-piece design (pump + separate housing), cast aluminum with steel impeller
Service Interval: 100,000 miles or 10 years (whichever comes first)

Fitment

Year Range	Toyota Model	Engine Code	Chassis Code
1993-1996	Land Cruiser Prado (70 Series)	1KZ-TE 3.0L turbo diesel	KZJ70, KZJ71, KZJ77, KZJ78
1996-2000	Land Cruiser Prado (90 Series)	1KZ-TE 3.0L turbo diesel	KZJ90, KZJ95
2000-2009	Land Cruiser Prado (120 Series)	1KZ-TE 3.0L turbo diesel	KZJ120, KZJ125
1993-1995	4Runner / Hilux Surf (2nd Gen)	1KZ-TE 3.0L turbo diesel	KZN130, KZN130G
1995-2000	4Runner / Hilux Surf (3rd Gen)	1KZ-TE 3.0L turbo diesel	KZN185, KZN185G, KZN185W
2000-2009	4Runner (4th Gen - select markets)	1KZ-TE 3.0L turbo diesel	KZN215
1993-2005	Hilux (6th Generation)	1KZ-TE 3.0L turbo diesel	KZN165, KZN170, KZN190
1993-2004	Hiace (Standard/Super Custom/Commuter)	1KZ-TE 3.0L turbo diesel	KZH100, KZH106, KZH110, KZH116, KZH120, KZH126, KZH132V, KZH138V
1995-2002	Grand Hiace	1KZ-TE 3.0L turbo diesel	KCH10, KCH10W, KCH12, KCH16, KCH16W
1995-2002	Granvia	1KZ-TE 3.0L turbo diesel	KCH10, KCH10W, KCH12, KCH16, KCH16W
1995-2002	Regius / Touring Hiace	1KZ-TE 3.0L turbo diesel	KCH40, KCH46

Important: This service package is designed specifically for 1KZ-TE turbo-diesel engines. The 1KZ-TE is an interference design in which timing belt failure can cause catastrophic valve-to-piston contact. Professional installation with proper timing procedures is mandatory. Verify engine code before ordering - this package is NOT compatible with 1KD-FTV or 2KD-FTV common rail diesel engines which require different components.

Installation Notes

Installation Difficulty: Expert/Professional 
Professional Installation Required: The 1KZ-TE is an interference engine requiring precise timing procedures. Improper installation can result in catastrophic engine damage.

Key Installation Steps:

• Set the engine to TDC on cylinder #1 compression stroke
• Install all timing components with the hydraulic tensioner release pin engaged
• Pull the release pin to activate automatic hydraulic tensioning
• Rotate engine two complete revolutions and re-verify all timing marks
• Install the water pump and thermostat with new gaskets
• Fill and bleed the cooling system with a proper 50/50 coolant mixture

 

Recommended Additional Parts

While this kit includes all essential timing belt and water pump components, consider these additional items during the 100K service:

• Camshaft Oil Seal (90311-32020) - Recommended during timing cover removal
• Injection Pump Drive Seal (90311-58006) - 1KZ-TE specific seal replacement
• Crankshaft Front Oil Seal (90311-50051) - Replace if leaking
• Valve Cover Gasket (11213-67010) - Preventive replacement
• Fan & Alternator Belt Set (90916-02385) - Matched Japanese belt set

 

Why Replace All Components Together?

The labor to access timing belt components on the 1KZ-TE is 6-10 hours, whether you replace just the belt or the complete package. Reusing worn tensioners or water pumps is a false economy - when these components fail before the next service interval, you'll pay for the same labor twice. More critically, if the hydraulic tensioner or tensioner pulley fails, it takes the timing belt with it, causing catastrophic interference engine damage that far exceeds the cost of this complete kit.

The 1KZ-TE is legendary for reliability when properly maintained. This complete OEM-quality package ensures all critical timing and cooling components are renewed together, providing the confidence that your diesel will run strong for the next 100,000 miles.

Frequently Asked Questions

Q: Why does this kit include a 71°C thermostat instead of the standard 82°C?
A: The 1KZ-TE engine runs hot, especially under load or in warm climates. The 71°C thermostat opens 11°C earlier than standard, maintaining lower operating temperatures that help prevent the cylinder head cracking issues known to occur in high-mileage 1KZ-TE engines. Toyota factory-equipped HiAce vans with 76°C thermostats for this reason - the 71°C provides even better thermal protection.

Q: Can I reuse my old water pump or hydraulic tensioner?
A: Never. The hydraulic tensioner is a sealed unit that cannot be rebuilt and must be replaced at every timing belt service. Water pump bearings and seals wear over 100K miles. Reusing either component risks catastrophic failure and engine damage that far exceeds the cost of new OEM components.

Q: Is this really necessary at 100K miles if my engine runs fine?
A: Absolutely mandatory. The 1KZ-TE is an interference engine, and timing belt failure can cause pistons to strike valves at high speed, resulting in bent valves, damaged pistons, and potentially destroyed cylinder heads ($4,000-8,000+ repair cost). Timing belts deteriorate internally before showing external wear. The 100K interval is Toyota's engineering specification - skipping it is gambling with catastrophic engine destruction.

Q: What's the difference between water pump 16100-69355 and 16100-69357?
A: Both are fully compatible two-piece water pump assemblies. The different numbers represent minor manufacturing updates or supplier variations (GMB vs. AISIN) but are functionally identical and completely interchangeable. Your order will be fulfilled with whichever number is currently available from our OEM suppliers.

Q: Can this be used on 1KD-FTV or 2KD-FTV engines?
A: No. While the water pump and hydraulic tensioner are compatible across engine families, the timing belt sizes differ. The 1KZ-TE uses a 102-tooth x 25mm belt, while 1KD/2KD engines require different specifications. Always order the correct kit for your specific engine code.

The 1KZ-TE Legacy

The 1KZ-TE 3.0L turbo diesel powered some of Toyota's most iconic vehicles through the 1990s and 2000s. Known for exceptional reliability, robust low-end torque, and the ability to handle significant power increases, this engine regularly exceeds 300,000-400,000 km with proper maintenance. Land Cruiser Prados crossed continents, Hilux Surfs defined the SUV category, and Hiace vans became the backbone of commercial fleets worldwide.

But this legendary reliability requires respecting the 100K service interval. Don't compromise with incomplete kits or aftermarket substitutes. This completely genuine OEM package ensures your 1KZ-TE maintains the reliability Toyota engineered into this legendary diesel platform.