Ecer asks for your consent to use your personal data to:
Personalised advertising and content, advertising and content measurement, audience research and services development
Store and/or access information on a device
Your personal data will be processed and information from your device (cookies, unique identifiers, and other device data) may be stored by, accessed by and shared with 135 TCF vendor(s) and 65 ad partner(s), or used specifically by this site or app.
Some vendors may process your personal data on the basis of legitimate interest, which you can object to by do not consent. Contact our platform customer service, you can also withdraw your consent.
Your message must
be between 20-3,000 characters!
Submit Requirement
Thank You！
Your requirement has been sent. we will contact you quickly!
{"title":"Corrosion-resistant aluminium alloy oil cooler assembly with plate-type heat","imgUrl":"https:\/\/img.chinax.com\/nimg\/fb\/94\/ff6b9582db31a71ecb99fc00b441-200x200-1\/corrosion_resistant_aluminium_alloy_oil_cooler_assembly_with_plate_type_heat.jpg","attrs":{"Payment Terms":"T\/T,","Stroke":"100.0 mm","Model Number":"Toyota Land Cruiser 70\/80 Coaster 1HZ","Housing Material":"Corrosion-resistant aluminium alloy"}}
{"title":"1.3mm Thickness Multi-Layer Steel (MLS) Cylinder Head Gasket for Toyota 15B 4.1L","imgUrl":"https:\/\/img.chinax.com\/nimg\/e4\/2a\/6d9a4ad5daa41dda71d4e2ac7515-200x200-1\/1_3mm_thickness_multi_layer_steel_28mls_29_cylinder_head_gasket_for_toyota_15b_4_1l_diesel_engine.jpg","attrs":{"Gasket Width":"197 mm","Compressed Thickness":"1.3 mm","Price":"Negotiable","Engine Compatibility":"Toyota 15B, 15B-F, 15B-FT, 15B-FTE (4.1L \/ 4,104 cc inline-4 diesel)"}}
{"title":"Upper Control Arm 48066-29225 for Toyota Hiace KDH200\/TRH200 2005-2014 \u2014 OEM","imgUrl":"https:\/\/img.chinax.com\/nimg\/6c\/f5\/5dd3d3a220a8cbe676f9a130578a-200x200-1\/upper_control_arm_48066_29225_for_toyota_hiace_kdh200_2ftrh200_2005_2014_e2_80_94_oem_front_suspension_rh_0a_0a.jpg","attrs":{"Model Number":"Toyota Hiace KDH200\/TRH200 2005-2014","Design":"Y-Shaped Structure for Optimized Load Distribution","Minimum Order Quantity":"2 pcs","Delivery Time":"5-8 Work Days"}}
{"title":"Back Door Stay Assembly Left Hand 68960-26196 6896026196 For Toyota Hiace\/Regius","imgUrl":"https:\/\/img.chinax.com\/nimg\/c4\/95\/9feef2068eb8dcc19cb6fcf2fc2b-200x200-1\/back_door_stay_assembly_left_hand_68960_26196_6896026196_for_toyota_hiace_2fregius_ace_h200_2005_2017_e2_80_94_oem_genuine_gas_str.jpg","attrs":{"Model Number":"Toyota Hiace\/Regius Ace H200 2005-2017","Payment Terms":"T\/T","Part Name":"STAY ASSY, BACK DOOR, LH (Left Hand)","Condition":"Brand New \u2014 100% quality inspected"}}
{"title":"Multi-Layer Steel (MLS) Cylinder Head Gasket with 96 mm Fire Rings for Toyota","imgUrl":"https:\/\/img.chinax.com\/nimg\/fd\/86\/cbb55e8bed93ab5a8e78e0c2020d-200x200-1\/multi_layer_steel_28mls_29_cylinder_head_gasket_with_96_mm_fire_rings_for_toyota_1kd_ftv_3_0_d_4d_engine.jpg","attrs":{"Certifiion":"ISO\/TS16949","Price":"Negotiable","Place of Origin":"China","OEM Part Number":"11115-0L010 (also 11115-0L010-A0, -B0, -C0)"}}
{"title":"Front Brake Disc 255mm Diameter 22mm Thickness Vented Rotor for Toyota Yaris","imgUrl":"https:\/\/img.chinax.com\/nimg\/69\/5f\/0b62f384df9c06464c96af38d7db-200x200-1\/front_brake_disc_255mm_diameter_22mm_thickness_vented_rotor_for_toyota_yaris_prius_c.jpg","attrs":{"Model Number":"Toyota Yaris \/ Prius C","Material":"High-quality cast iron","Minimum Order Quantity":"10 pcs","Delivery Time":"5-8 Work Days"}}
{"title":"A\/C Compressor 88310\u201152551 88310\u20112B720 For TOYOTA Yaris Vitz Vios \u2014 AC","imgUrl":"https:\/\/img.chinax.com\/nimg\/5a\/87\/297411f2ed3594b5aabfdee499e3-200x200-1\/a_2fc_compressor_88310_e2_80_9152551_88310_e2_80_912b720_for_toyota_yaris_vitz_vios_e2_80_94_ac_compressor_5ser09c_1nz_e2_80_91fe_.jpg","attrs":{"Packaging Details":"Neutral Package or as customers\u2019 request","Pulley Grooves":"4PK (4\u2011rib serpentine belt) \u2014 some 6PK variants available aftermarket","Voltage":"12V DC","Engine Fitment":"TOYOTA 1NZ\u2011FE (1.5L), 1ND\u2011TV (1.4L Diesel), 1NR\u2011FE (1.3L), 2SZ\u2011FE (1.3L)"}}
Oil Cooler Assembly 15710-17010 For Toyota Land Cruiser 70/80 Coaster 1HZ 4.2L Diesel
The oil cooler assembly carrying Toyota OEM number 15710-17010 is a direct factory-spec replacement for the engine oil cooler on the Toyota 1HZ 4.2L inline-six diesel engine. This component is fitted to a wide range of Toyota's most durable commercial and off-road vehicles, including the Land Cruiser 70 Series, Land Cruiser 80 Series, and Coaster bus.
Quality Standard:OEM equivalent / ISO quality control
Vehicle & Engine Appliions
This Toyota 1HZ oil cooler assembly 15710-17010 directly replaces the factory component in the following configurations:
Vehicle Model
Chassis
Engine
Production Period
Toyota Land Cruiser 70 Series
HZJ70, HZJ71, HZJ73, HZJ77
1HZ 4.2L diesel
05.1993 - 08.1999
Toyota Land Cruiser 70 Series
HZJ73HV
1HZ 4.2L diesel
11.1990 - 05.1993
Toyota Land Cruiser 80 Series
HZJ80, HDJ80
1HZ / 1HD-T 4.2L diesel
01.1990 - 01.1995
Toyota Coaster Bus
HZB40, HZB50
1HZ 4.2L diesel
07.1999 - 03.2001
Additional appliions confirmed by Toyota EPC data:
Land Cruiser HZJ81V
Coaster HZB60, HZB70
Coaster HZB41, HZB40
Important fitment note: This oil cooler is also compatible with the 1HD-T and 1HD-FT turbo diesel engines, which share the same oil cooler architecture as the 1HZ. However, always verify fitment by matching your original part number or consulting the Toyota EPC for your specific chassis code and production date.
Why the 1HZ Oil Cooler Fails
The Toyota 1HZ engine is legendary for its durability. The oil cooler, however, is a serviceable component that can fail over time - particularly on high-mileage vehicles exceeding 300,000 km.
Common failure modes include:
Internal gasket failure: The sealing rings between the oil cooler and the engine block degrade over time, allowing oil to leak into the coolant system or coolant to enter the oil system.
Clogged coolant passages: Scale, corrosion, and debris accumulation inside the oil cooler's coolant passages reduces heat transfer efficiency.
External corrosion: The aluminium housing can corrode externally, particularly in vehicles exposed to road salt or coastal environments.
Relief valve failure: The oil cooler relief valve can stick or fail, allowing oil to bypass the cooler entirely.
Features & Benefits
Plate-Type Heat Exchanger Design: Efficient oil cooling with large surface area for heat transfer in a compact package
Prevents Oil-Coolant Cross-Contamination: Restores critical separation between oil and coolant systems
Corrosion-Resistant Aluminium Alloy Housing: Provides resistance to coolant additives and thermal cycling
Direct OE Replacement: No modifiions, adapters, or additional fabriion required
Comprehensive OE Interchange Coverage: Interchangeable with 15710-17020, 15710-17011, and 15710-17021
Proven on Legendary 1HZ Engine Platform: Critical component for achieving engine longevity of 500,000+ km
IATF 16949 / ISO 9001 Certified Manufacturing: Highest standard for automotive component production
Quality Control & Verifiion
QC Item
Verifiion Method
Housing casting integrity
Visual and pressure decay test - no porosity, cracks, or voids
Coolant passage flow
Flow bench measurement - meets Toyota cooling system specifiion
Oil passage flow
Flow bench measurement - meets Toyota lubriion system specifiion
Internal leak integrity
Pressure test on both oil and coolant circuits - zero cross-leakage
Gasket sealing surface flatness
Dial gauge measurement - flatness within 0.1 mm
Thread and port inspection
Go/no-go gauge for coolant and oil line fittings
Full functional test (batch sampling)
Random 2-5% of each batch tested on circulation loop at operating temperature
Installation & Maintenance Recommendations
⚠️ IMPORTANT: The 1HZ oil cooler is loed on the side of the engine block and is connected to both the engine oil system and the coolant system. When replacing the oil cooler, the oil cooler gasket (Toyota OE: 15785-66010) and sealing rings must also be replaced - never reuse old seals. Coolant and engine oil should be drained before removal and replaced with fresh fluids after installation.
When to replace this oil cooler (1HZ-specific symptoms):
Symptom
Diagnosis
Milky residue in coolant overflow bottle or radiator
Oil has entered the coolant system - internal oil cooler failure
Oil on the dipstick appears milky or frothy
Coolant has entered the oil system - internal oil cooler failure
Coolant loss without visible external leak
Coolant entering the oil system through failed cooler internal seals
Engine overheating under load
Reduced heat transfer efficiency - clogged or failed cooler
Erratic oil pressure readings
Restricted oil flow through cooler passages
Installation Steps (High-Level - Refer to Toyota Workshop Manual for Complete Details):
Drain the engine oil and coolant completely
Remove the oil filter, oil lines, and coolant lines from the oil cooler assembly
Remove the oil cooler mounting bolts and carefully withdraw the assembly from the engine block
Thoroughly clean the mounting surface on the engine block
Compare the new oil cooler with the old unit - verify port loions and dimensions
Install new sealing rings and the oil cooler gasket (Toyota OE: 15785-66010)
Install the new oil cooler assembly onto the engine block and torque mounting bolts to specifiion
Reconnect the oil lines and coolant lines - use new sealing washers where specified
Refill the engine with fresh engine oil and coolant to correct levels
Start the engine and check for leaks at all connections
Run the engine to operating temperature and verify oil pressure and coolant temperature
Check for any milky residue in the coolant or oil
Maintenance schedule for 1HZ oil cooler systems:
Service Item
Interval
Inspect oil cooler for external leaks or corrosion
At every oil change (every 5,000-10,000 km)
Replace engine coolant
Every 2 years or 40,000 km
Check coolant and oil for cross-contamination
Monthly - early detection prevents astrophic engine damage
When oil cooler is removed for any reason
Always replace oil cooler gasket and sealing rings
Packaging & Supply
Individual packaging: Sealed in anti-static VCI bag, foam-lined carton
Carton dimensions: Approximately 28 × 20 × 15 cm
Net weight: Approximately 2.5-3.0 kg
Master carton: 20 units per export carton (palletisable)
Lead time: 3-7 working days for stock orders; 15-25 days for production orders above 100 pieces
Minimum order quantity: 1 piece (sample order available)
Shipping methods: FedEx, UPS, DHL for sample quantities; sea freight from major Chinese ports
H/S Code: 8409.91
For workshops performing a full cooling system service, the supplier also stocks matching oil cooler gaskets (15785-66010), sealing rings, and relief valves (15690-64011) for the 1HZ engine family.
Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ... Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ...
