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Idle Gear Shaft 13581-17012 for Land Cruiser HZJ79 COASTER HZB50 — Genuine Toyota OEM
Product Overview
The Idle Gear Shaft (SHAFT, IDLE GEAR, NO.1) with Genuine Toyota OEM number 13581-17012 (also listed as 1358117012) is a verified direct-fit replacement for Toyota Land Cruiser and Toyota COASTER models equipped with the 1HZ and 1HD-FTE diesel engines.
As a critical component of the engine's timing gear train, this shaft serves as the pivot point for the idler gear, maintaining proper gear alignment and facilitating efficient power transfer from the engine. The idler gear plays an essential role in the timing system, transmitting rotation from one shaft to another and ensuring precise synchronization between the crankshaft and camshaft for optimal engine performance.
Real Shop Test Data: Precision-engineered idler gear shaft built to Toyota's exacting OEM standards
Proven Durability: Constructed from high-grade metal with precision engineering
Verified OEM Compatibility: Replaces 13581-17011 and 13581-17010
Cross-Vehicle Compatibility: Fits Land Cruiser 70/80/100 Series and COASTER models
Failure Symptoms
If your idle gear shaft is failing, you may experience one or more of the following symptoms:
Noisy Engine Operation: Unusual rattling, whining, or grinding noises from the timing gear area
Timing Issues: Engine runs rough, misfires, or exhibits poor performance
Difficulty Starting: Extended cranking or no-start conditions
Metal Shavings in Oil: Visible metallic particles in the engine oil during servicing
Complete Timing Failure: In extreme cases, can lead to astrophic engine damage
A worn or broken idle gear shaft can lead to significant engine timing issues and costly repairs — regular inspection and timely replacement are critical to maintain your vehicle's performance and reliability.
Specifiions
Part Number:
13581-17012
Product Name:
Idle Gear Shaft
Car Model:
Land Cruiser HZJ79 COASTER HZB50
Engine Model:
1HZ, 1HD
Condition:
100% Brand New
Material:
High-strength aluminum alloy & precision bearings
Vehicle & Engine Compatibility
Brand
Model
Chassis / Series
Engine
Years / Notes
Toyota
Land Cruiser 70
HZJ79
1HZ 4.2L Diesel
1999-2004
Toyota
Land Cruiser 80
HDJ81
1HD-FTE 4.2L TD
1995-1998
Toyota
Land Cruiser 100
HDJ101K-2
1HD-FTE 4.2L TD
2002
Toyota
COASTER
HZB50, HZB40
1HZ 4.2L Diesel
1993-2016
Important Notes:
This part number 13581-17012 supersedes 13581-17011 and 13581-17010
For COASTER HZB40 models, this part was used from 04.2001 to 08.2004
Compatible with both manual and automatic transmission configurations
Please verify your vehicle's chassis code and engine code before ordering
Features & Benefits
Genuine Toyota OEM Part
Guarantees factory-fit quality and performance
Precision-Engineered Construction
Maintains proper gear alignment and facilitates efficient power transfer
High-Grade Metal Durability
Endures the demands of a running engine with minimal friction
Direct Replacement
No modifiions required
Critical Timing Component
Essential for smooth operation of the timing gear train
100% New — Genuine OEM
Guarantees zero wear, immediate performance, and full service life
Quality Control & Verifiion
QC Item
Verifiion Method
Dimensional Accuracy
Precision machining to Toyota OE blueprint specifiions
Material Composition
High-grade metal analysis to verify durability and wear resistance
Surface Hardness
Heat treatment verifiion to ensure long-term durability
Dimensional Inspection
100% inspection of critical dimensions
Final Assembly Inspection
100% visual and dimensional inspection before packaging
Installation & Maintenance
Professional Installation Highly Recommended — The idle gear shaft is an integral component of the engine's timing gear train. Replacement requires specialized tools and expert knowledge of Toyota diesel engine timing systems.
Pre-Installation Checklist:
This shaft is typically replaced during timing gear service or engine rebuilds
Inspect the idler gear and related timing components for wear
Ensure the engine is properly timed after installation
Use new seals and gaskets during reassembly
Installation Guidelines (Reference Toyota workshop manual):
Ensure the engine is properly supported and the timing cover is removed
Remove the old idle gear shaft and inspect the mounting bore
Clean the mounting surface and bore thoroughly
Install the new shaft with correct orientation
Torque the mounting bolts to manufacturer's specified torque settings
Install the idler gear and verify smooth rotation
Set the engine timing correctly before reassembly
Reassemble the timing cover and remaining components
Start the engine and check for unusual noises
Packaging & Supply
Each idle gear shaft is securely packed in Genuine Toyota OEM packaging to prevent shipping damage. Suitable for wholesale distributors, auto parts retailers, 4×4 specialty shops, commercial vehicle repair shops, and fleet owners.
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 ...
