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Precision-Machined Aluminum Clutch Master Cylinder with 3/4" Bore Size for ISUZU ELF NKR55 100P 4JB1 - OEM Standard Fitment

Basic Properties
Place of Origin: China
Brand Name: YIMI
Certification: ISO/TS16949
Model Number: ISUZU ELF Platform/Chassis (NKR8_, NKQ8_), ELF Box (NHR6_, NKR6_, NKR7_, NKS7_); NKR55, NKR69, NKR58, NPR66; 100P, NHR
Trading Properties
Minimum Order Quantity: 10 pcs
Price: Negotiable
Payment Terms: T/T
Supply Ability: 10000 pcs/month
Specifications
Weight: Approx. 0.9 Kg Material: Precision-Machined Aluminum
Bore Size: 3/4" (19.05 Mm) Part Numbers: 8-98117-644-0, 8981176440, 8-97167406-0, 8971674060, 8-98117644-0
Housing Material: High-strength Aluminum Alloy Cooling Type: Engine Coolant Circulation
Installation Type: Direct OEM Replacement Quality Standard: OEM Equivalent / ISO Quality Control
High Light:

Precision-Machined Aluminum Clutch Master Cylinder

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3/4" Bore Size Hydraulic Clutch Cylinder

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OEM Standard Fitment Clutch Cylinder Assembly

Product Description
Clutch Master Cylinder 8-98117-644-0 For ISUZU ELF NKR55 100P 4JB1 3/4"
Precision-engineered clutch master cylinder converts mechanical pedal force into hydraulic pressure, enabling smooth clutch engagement and disengagement for ISUZU ELF and N-series trucks.
Product Overview
The Clutch Master Cylinder Assembly (OEM Numbers: 8-98117-644-0 / 8981176440 / 8-97167406-0 / 8971674060) is a premium-quality, direct replacement hydraulic component designed specifically for ISUZU ELF Platform/Chassis (NKR8_, NKQ8_) and ELF Box (NHR6_, NKR6_, NKR7_, NKS7_) models, as well as NKR55, NKR69, NKR58, and NPR66 trucks. This precision-engineered master cylinder converts mechanical force from the clutch pedal into hydraulic pressure for smooth clutch operation.
Part Number8-98117-644-0, 8981176440, 8-97167406-0, 8971674060, 8-98117644-0
Product NameClutch Master Cylinder Assembly / Cylinder Asm; Clutch Master
Car ModelISUZU ELF Platform/Chassis (NKR8_, NKQ8_), ELF Box (NHR6_, NKR6_, NKR7_, NKS7_); NKR55, NKR69, NKR58, NPR66; 100P, NHR
Engine ModelISUZU 4JB1, 4JG2, 4HF1, 4BE1
Condition100% Brand New
OriginChina Mainland
Main MarketMiddle East, Asia, Africa, South America, North America & Europe
Warranty6 Months
MaterialHigh-strength aluminum alloy & precision bearings
InstallationDirect OEM replacement
Quality StandardOEM equivalent / ISO quality control
Clutch Master Cylinder 8-98117-644-0 product image
Features & Advantages
  • OE Quality: Manufactured to strict ISUZU dimensional and performance specifications
  • Precision Honed Bore: 3/4" (19.05mm) bore ensures smooth piston travel
  • Durable Aluminum Construction: High-quality housing resists corrosion and wear
  • Reliable Seals: Fluid-resistant seals prevent leaks and maintain hydraulic pressure
  • Smooth Clutch Operation: Enables precise, responsive clutch control
  • Restores Shifting Performance: Eliminates spongy pedal feel and shifting difficulties
  • Direct Replacement: Simple installation during clutch system service
  • 1-Year Warranty: Quality assurance for peace of mind
  • Long Service Life: Engineered for reliability in demanding commercial applications
  • Cost-Effective Maintenance: Essential component for reliable clutch system performance
Clutch Master Cylinder technical details and specifications
Vehicle & Engine Compatibility
ISUZU Models:
  • ISUZU ELF Platform/Chassis – NKR8_, NKQ8_
  • ISUZU ELF Box – NHR6_, NKR6_, NKR7_, NKS7_
  • ISUZU NKR55 – Light-Duty Trucks
  • ISUZU NKR69 – Light-Duty Trucks
  • ISUZU NKR58 – Light-Duty Trucks
  • ISUZU NPR66 – Medium-Duty Trucks
  • ISUZU 100P – Light-Duty Trucks
Compatible Engine Models:
  • 4JB1 – 2.8L Diesel Engine
  • 4JG2 – 3.1L Diesel Engine
  • 4HF1 – 4.3L Diesel Engine
  • 4BE1 – 3.6L Diesel Engine
Installation Notes
Professional installation recommended. Proper hydraulic system bleeding is critical.
  1. Disconnect battery – Disconnect the negative battery cable before beginning work
  2. Drain clutch fluid – Drain the clutch fluid from the reservoir and system
  3. Disconnect hydraulic line – Carefully disconnect the clutch fluid line from the master cylinder
  4. Remove the old master cylinder – Unbolt and remove the old master cylinder from the firewall
  5. Inspect the pushrod and pedal linkage – Check for wear or damage; replace if necessary
  6. Clean the mounting area – Clean the firewall mounting surface and surrounding area
  7. Prepare the new master cylinder – Inspect the new cylinder and verify it matches the original
  8. Install the new master cylinder – Position the new cylinder and secure with mounting bolts
  9. Torque to specification – Tighten bolts to manufacturer specification
  10. Connect hydraulic line – Reconnect the clutch fluid line to the master cylinder
  11. Fill reservoir – Fill the reservoir with the correct type of clutch/brake fluid
  12. Bleed the system – Bleed the hydraulic clutch system to remove all air from the lines
  13. Check pedal feel – Test the clutch pedal for proper feel and travel
  14. Reconnect battery – Reconnect the battery
  15. Test operation – Start the engine and test clutch engagement and shifting
  16. Road test – Test drive the vehicle to verify smooth clutch operation
Quality Control
  • Material Verification: Confirms housing and seal materials meet OE specifications
  • Dimensional Inspection: Bore size (3/4"), mounting dimensions, and port positions verified
  • Leakage Testing: 100% pressure-tested for internal and external fluid leakage
  • Piston and Seal Inspection: Seal integrity and piston smoothness verified
  • Surface Finish Inspection: Machined surfaces checked for proper finish
  • Visual Inspection: 100% checked for casting defects, machining flaws, or damage
  • Packaged Safely: Protected and securely packaged to prevent contamination and damage
Packaging and Delivery
  • Neutral export packing or customized packaging available
  • Carton or wooden case for safe transportation
  • Fast delivery for stock items
  • Shipping by Express Air or Sea
Inquiry
For pricing, availability, or bulk purchase of the Clutch Master Cylinder 8-98117-644-0 For ISUZU ELF NKR55 100P 4JB1 3/4", please contact our sales team for a competitive quote and expert technical support.