Clutch Slave Cylinder 8-98004780-0 8980047800 8973494230 For ISUZU NPR NKR 4HF1 4HG1 MYY5T — OEM 1″ Bore Cast Iron Hydraulic Clutch Actuator
Basic Properties
Place of Origin:
China
Brand Name:
YIMI
Certification:
ISO/TS16949
Model Number:
ISUZU NPR NKR 4HF1 4HG1 MYY5T
Trading Properties
Minimum Order Quantity:
10 pcs
Price:
Negotiable
Payment Terms:
T/T
Supply Ability:
10000 pcs/month
Specifications
| OEM Part Number: | 8-98004780-0 / 8980047800 / 8973494230 | Part Name: | Clutch Slave Cylinder / CYLINDER; SLAVE |
| Bore Diameter: | 1″ (25.4mm) | Material: | High-Grade Cast Iron |
| Thread Size: | M10 X 1.25 | Weight: | Approx. 0.35 – 0.39 Kg |
| Vehicle Compatibility: | ISUZU NPR, NKR, N-Series | Engine Compatibility: | ISUZU 4HF1, 4HG1 |
| Transmission Compatibility: | ISUZU MYY5T | Condition: | Brand New — 100% Quality Inspected |
| Warranty: | 12 Months | ||
| High Light: | ISUZU NPR clutch slave cylinder,hydraulic clutch actuator 1 inch bore,cast iron clutch cylinder ISUZU |
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Product Description
Clutch Slave Cylinder 8-98004780-0 8980047800 8973494230 For ISUZU NPR NKR 4HF1 4HG1 MYY5T — OEM 1″ Bore Cast Iron Hydraulic Clutch Actuator
Product Overview
The Clutch Slave Cylinder with OEM numbers 8-98004780-0 (also listed as 8980047800) and 8973494230 is a verified OEM-grade direct replacement for ISUZU NPR, NKR, and compatible N-Series trucks equipped with 4HF1 and 4HG1 engines, mated to the MYY5T manual transmission.
Important Fitment Note: This cylinder is specifically designed for vehicles equipped with the MYY5T manual transmission and 4HF1 or 4HG1 engines. Always verify your vehicle's transmission and engine codes before ordering.
OEM Specification
Verified by ISUZU OEM part numbers 8-98004780-0, 8980047800, and 8973494230
Precision 1″ (25.4mm) Bore
Delivers consistent hydraulic pressure for reliable clutch actuation
Proven Durability
Constructed from high-grade cast iron with premium sealing components for superior heat and corrosion resistance
Broad Compatibility
Fits ISUZU NPR, NKR, N-Series with 4HF1, 4HG1 engines and MYY5T transmission
Failure Symptoms
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, spongy, or goes to the floor without resistance
- Difficulty Shifting Gears: Hard to engage or disengage gears, accompanied by grinding noises
- Clutch Pedal Heavy or Stiff: Pedal requires excessive force to depress
- 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
- Clutch Engagement Point Changes: Pedal engages very close to the floor or very high
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.
Vehicle & Engine Compatibility
| Brand | Model | Chassis / Series | Transmission | Engine |
|---|---|---|---|---|
| ISUZU | NPR | N-Series | MYY5T | 4HF1, 4HG1 |
| ISUZU | NKR | N-Series | MYY5T | 4HF1 |
| ISUZU | N-Series | Various | MYY5T | 4HF1, 4HG1 |
Important: This clutch slave cylinder is specifically designed for the ISUZU MYY5T manual transmission. Fits ISUZU NPR and NKR models with 4HF1 and 4HG1 engines. This cylinder is commonly used in NPR66, NKR66, and NPR71 chassis. Please verify your vehicle's transmission model (MYY5T), chassis code, and engine code before ordering.
Features & Benefits
| Feature | Benefit + Verification Signal |
|---|---|
| OEM Specification — ISUZU Genuine Equivalent | Guarantees factory-fit quality and performance — verified by OEM part numbers 8-98004780-0, 8980047800, and 8973494230 |
| Precision 1″ (25.4mm) Bore | Delivers consistent hydraulic pressure for reliable clutch actuation — verified by dimensional specifications |
| High-Grade Cast Iron Construction | Provides exceptional durability and corrosion resistance under demanding commercial conditions — verified by material specifications |
| MYY5T Transmission Compatibility | Specifically engineered for ISUZU MYY5T manual transmissions — verified by transmission model compatibility |
| Direct Bolt-On Fitment | No modifications required — engineered as a direct match for the original cylinder |
| 100% Pressure Tested | Guarantees dependable operation and leak-free performance — verified by quality assurance testing |
| 100% New — No Core Charge | Guarantees zero wear, immediate hydraulic performance, and full service life — no core deposit required |
Quality Control & Verification
Our manufacturing and inspection processes ensure every clutch slave cylinder meets or exceeds ISUZU OEM standards.
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | Precision inspection to verify 1″ (25.4mm) bore diameter, M10 x 1.25 threads, and mounting hole spacing match OE blueprint specifications |
| Material Composition | Cast iron analysis to verify structural integrity and corrosion resistance |
| Bore Surface Test | 100% surface testing to ensure optimum sealing surface for pressure cups |
| 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 seal integrity |
| Durability Cycle Test | 500+ hour fatigue testing to verify long-term reliability under commercial vehicle operating conditions |
| 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
- CRITICAL: Verify your vehicle has the MYY5T transmission — this cylinder is specifically designed for this transmission
- 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
- Use new brake fluid (DOT 3 or DOT 4) from a sealed container
Installation Guidelines
(Reference ISUZU workshop manual):
- Safely raise the vehicle and secure it on jack stands
- Locate 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 specification
- CRITICAL: Bleed the clutch hydraulic system thoroughly to remove all air (start with the slave cylinder)
- 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 to prevent shipping damage
- Package Contents: 1 Clutch Slave Cylinder (Push rod included)
- Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners
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