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Clutch Slave Cylinder 8-97310990-0 8973109900 For ISUZU ELF350 NQR NLR 4HL1 2007-Onwards — OEM Cast Iron With Auto-Adjust
Product Overview
The Clutch Slave Cylinder with OEM number 8-97310990-0 (also listed as 8973109900) is a verified OEM-grade replacement for ISUZU NQR, NLR, and ELF350 series trucks equipped with the 4HL1 diesel engine. As a core component of the hydraulic clutch system, this cylinder converts hydraulic pressure from the clutch master cylinder into mechanical force to actuate the clutch fork, enabling smooth gear engagement and disengagement in commercial transport appliions.
Fitment Note: This part is a direct alternative to 8-97310989-1 / 8973109891 (NAKOL BTE0207). Both numbers refer to the same clutch slave cylinder assembly and are interchangeable for these appliions.
Real Shop Test Data: Precision-engineered with 1" (25.40mm) bore size and M10 ×1 thread — verified against ISUZU OEM specifiions
Proven Durability: Built with high-strength cast iron construction — rated for 200,000+ km under normal operation
Installation Success Rate:99% direct bolt-on fitment — confirmed across thousands of repair orders for ISUZU NQR/NLR vehicles
If your clutch slave cylinder is failing, you may experience one or more of the following symptoms:
Soft or Spongy Clutch Pedal: Pedal feels unusually soft or goes to the floor without resistance — indies internal seal failure
Difficulty Shifting Gears: Hard to engage or disengage gears, accompanied by grinding noises — the clutch is not fully disengaging
Clutch Pedal Heavy or Stiff: Pedal requires excessive force to depress — indies hydraulic blockage or internal piston seizure
Clutch Drag / Incomplete Disengagement: Vehicle creeps forward with clutch fully depressed, or gears grind when shifting
Visible Fluid Leakage: Brake/clutch fluid seeping from the slave cylinder area — indies worn piston seals
Reduced Clutch Responsiveness: Noticeable delay or inconsistency in clutch engagement
Warning: A failing clutch slave cylinder can lead to incomplete clutch disengagement, gear grinding, and potential transmission damage — prompt replacement is essential to maintain safe and reliable vehicle operation.
Product Specifiions
Part Number
8-97310990-0 8973109900
Product Name
Clutch Slave Cylinder
Car Model
ISUZU ELF350 NQR NLR
Engine Model
4HL1
Condition
100% Brand New
Origin
China Mainland
Main Market
Middle East, Asia, Africa, South America, North America & Europe
Vehicle & Engine Compatibility
Primary Appliions:
Brand
Model
Series
Engine
Years
ISUZU
ELF350
N-Series
4HL1 Diesel
2007-Present
ISUZU
NLR
N-Series
4HL1 Diesel
2007-Present
ISUZU
NMR
N-Series
4HL1 Diesel
2007-Present
ISUZU
NQR
N-Series
4HL1 Diesel
2007-Present
Important: This clutch slave cylinder is designed for ISUZU ELF350, NLR, NMR, and NQR models equipped with the 4HL1 diesel engine. Compatible with both Left-Hand Drive (LHD) and Right-Hand Drive (RHD) configurations. Features automatic adjustment function that compensates for travel changes caused by clutch disc wear, eliminating frequent manual adjustments. Please verify your vehicle's model code (ELF350/NLR/NMR/NQR) and engine code (4HL1) before ordering.
Features & Benefits
OEM Specifiion — ISUZU Genuine
Guarantees factory-fit quality and performance — verified by ISUZU OEM part numbers
High-Strength Cast Iron Construction
Delivers exceptional durability and corrosion resistance under demanding commercial conditions
1" (25.40mm) Precision Bore
Ensures consistent hydraulic pressure for reliable clutch actuation — verified by OEM engineering standards
Automatic Adjustment Function
Automatically compensates for clutch disc wear, eliminating frequent manual adjustments
Direct Bolt-On Fitment
No modifiions required — engineered as a direct match for the original cylinder
LHD / RHD Compatible
One part number fits both drive configurations — simplifies inventory management
100% New — No Core Charge
Guarantees zero wear, immediate hydraulic performance, and full service life
Quality Control & Verifiion
Our manufacturing and inspection processes ensure every clutch slave cylinder meets or exceeds ISUZU OEM standards.
QC Item
Verifiion Method
Dimensional Accuracy
Precision inspection to verify 1" (25.40mm) bore size, 63mm mounting bore distance, and M10×1 thread match OE blueprint specifiions
Material Hardness
Cast iron composition analysis to verify structural integrity under high hydraulic pressure
Leakage Test
100% hydraulic pressure test to guarantee zero fluid leakage under operating conditions
Piston Function Test
Full actuation test to verify smooth piston movement and auto-adjustment mechanism function
Durability Cycle Test
500+ hour fatigue testing to verify 200,000+ km service life
Final Assembly Inspection
100% visual and functional inspection before packaging
Installation & Maintenance Recommendations
IMPORTANT: Professional Installation Recommended
Pre-Installation Checklist:
Ensure the vehicle is securely supported on jack stands or a lift
Clean the area around the slave cylinder to prevent contamination
Inspect the clutch hydraulic line for damage or corrosion — replace if necessary
Check the clutch fork and release bearing for wear while the slave cylinder is removed
Safely raise the vehicle and secure it on jack stands
Loe the clutch slave cylinder on the transmission bell housing
Disconnect the hydraulic line from the slave cylinder — plug the line to prevent fluid loss and contamination
Remove the mounting bolts securing the slave cylinder to the transmission
Remove the old slave cylinder and push rod
Clean the mounting surface on the transmission thoroughly
Install the new slave cylinder with the push rod correctly positioned
Torque the mounting bolts to manufacturer's specified torque settings (refer to ISUZU workshop manual)
Reconnect the hydraulic line and torque to specifiion
CRITICAL: Bleed the clutch hydraulic system thoroughly to remove all air
Check the clutch fluid level and top up with fresh DOT 3 or DOT 4 brake fluid as required
Test the clutch pedal feel and verify smooth gear engagement before road test
Maintenance Schedule:
Inspection: Every 50,000 km / 12 months. Check for fluid leaks, pedal feel, and smooth gear engagement
Fluid Replacement: Every 2 years or 40,000 km — replace clutch fluid to prevent internal corrosion
Replacement: Immediately if failure symptoms appear
Packaging & Supply
Packaging: Each clutch slave cylinder is securely packed in protective packaging (plastic bag and kraft carton). Payment Terms: T/T. Suitable for: Wholesale distributors, truck parts retailers, 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 ...
