Yimi (Guangzhou) Automotive Parts Co, Ltd
                                                                                                           
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Precision-Machined Aluminum Clutch Master Cylinder with 3/4" Bore Size for ISUZU ELF NKR55 100P 4JB1 - OEM Standard Fitment

Price Negotiable
Price: Negotiable
MOQ: 10 pcs
Delivery Time: 5-8 Work Days
Brand: YIMI
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 specifiions
  • 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 appliions
  • Cost-Effective Maintenance: Essential component for reliable clutch system performance
Clutch Master Cylinder technical details and specifiions
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 specifiion – Tighten bolts to manufacturer specifiion
  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 Verifiion: Confirms housing and seal materials meet OE specifiions
  • 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.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Yimi (Guangzhou) Automotive Parts Co, Ltd
Location Unit 1313, Building 5, Changsheng DDP Fashion Center, No. 17 Dachi Road, Tancun, Shijing Subdistrict, Baiyun District, Guangzhou City.
Contact Person James

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