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Transmission Top Gear Shaft 8-97252924-1 8972529241 For ISUZU MYY5T NPR With 4JH1 3.0L Diesel — OEM 28-Tooth Input Shaft
Transmission Top Gear Shaft 8-97252924-1 8972529241 for ISUZU MYY5T 4JH1 — OEM 28-Tooth Input Shaft
The Transmission Top Gear Shaft (Input Shaft) with OEM numbers 8-97252924-1 and 8972529241 is a verified direct-fit replacement for the ISUZU MYY5T manual transmission, commonly found in ISUZU NPR and NKR series trucks equipped with the 4JH1 3.0L diesel engine. As the primary input shaft of the transmission, this component is responsible for receiving torque from the clutch and transferring it to the transmission's gear train, playing a pivotal role in the management of power from the engine to the wheels.
Real Shop Test Data: Precision-engineered 28-tooth input shaft with 28T gear specifiion — verified against ISUZU OEM specifiions
Proven Durability: Constructed from high-strength, wear-resistant steel to withstand constant stress of gear shifting and heavy-duty torque loads — rated for 300,000+ km under normal operation
Installation Success Rate: 99% direct replacement fitment — confirmed across thousands of repair orders for ISUZU MYY5T transmissions
If your transmission top gear shaft is failing, you may experience one or more of the following symptoms:
Unusual Transmission Noises: Whining, grinding, or clunking sounds from the transmission, especially in gear — indies worn gear teeth or bearings
Difficulty Shifting Gears: Hard to engage or disengage gears, accompanied by grinding noises — the input shaft is not spinning freely
Transmission Slipping: Engine RPM rises but vehicle does not accelerate proportionally — worn gear teeth are not engaging properly
Vibration Through Gear Lever: Noticeable vibration felt through the gear shift lever during operation
Metal Shavings in Transmission Oil: Visible metallic particles in the transmission fluid during servicing — indies severe internal wear
⚠️ A failing transmission top gear shaft can lead to complete transmission failure and costly repairs — prompt replacement is essential to maintain drivetrain reliability.
Part Number:
8-97252924-1 8972529241
Product Name:
Transmission Top Gear Shaft
Car Model:
ISUZU NPR
Engine Model:
4JH1
Condition:
100% Brand New
Origin:
China Mainland
Vehicle & Engine Compatibility
Primary Appliions:
Brand
Model
Chassis / Series
Transmission
Engine
ISUZU
NPR
N-Series
MYY5T Manual
4JH1 3.0L Diesel
ISUZU
NKR
N-Series
MYY5T Manual
4JH1 3.0L Diesel
ISUZU
N-Series
Various
MYY5T Manual
4JH1-3
⚠️ Important:
This transmission top gear shaft is designed for the ISUZU MYY5T manual transmission — NOT compatible with other transmission models
Fits ISUZU NPR and NKR trucks with 4JH1 engines
Also compatible with 4HG1 engine appliions
Please verify your vehicle's transmission model (MYY5T) and engine code (4JH1) before ordering
Features & Benefits
OEM Specifiion — ISUZU Genuine Equivalent
Guarantees factory-fit quality and performance — verified by OEM part numbers 8-97252924-1 and 8972529241
28-Tooth Precision Gear Profile
Ensures correct gear meshing and smooth power transfer — verified by OEM gear specifiions
High-Strength, Wear-Resistant Steel Construction
Withstands the constant stress of gear shifting and heavy-duty torque loads — verified by material specifiions
Precision-Machined for MYY5T Transmission
Specifically engineered for ISUZU MYY5T manual transmissions — verified by transmission compatibility
Direct Drop-In Fitment
No modifiions required — verified by 99% installation success rate
100% New — No Core Charge
Guarantees zero wear, immediate transmission performance, and full service life — no core deposit required
Quality Control & Verifiion
Our manufacturing and inspection processes ensure every transmission top gear shaft meets or exceeds ISUZU OEM standards.
QC Item
Verifiion Method
Dimensional Accuracy
Precision inspection to verify 28-tooth gear profile, shaft diameter, and spline fitment match OE blueprint specifiions
Material Composition
High-strength steel analysis to verify wear resistance and durability under heavy loads
Gear Tooth Hardness
Hardness testing to ensure gear teeth withstand the stress of constant shifting
Surface Finish Test
Surface roughness verifiion to ensure smooth gear engagement
Durability Cycle Test
500+ hour fatigue testing to verify 300,000+ km service life
Final Assembly Inspection
100% visual and dimensional inspection before packaging
Installation & Maintenance Recommendations
⚠️ IMPORTANT: Professional Installation Highly Recommended
Transmission top gear shaft replacement requires complete transmission disassembly, specialized tools, and expert knowledge of manual transmission systems.
Pre-Installation Checklist:
The MYY5T transmission must be removed from the vehicle and disassembled
Inspect all bearings, synchronizers, and gears for wear — replace as necessary
Use new seals and gaskets during reassembly
CRITICAL: Refer to the ISUZU workshop manual for correct disassembly and reassembly procedures
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 ...
