Clutch Master Cylinder 897167406 8-97167406-0 for ISUZU NPR NKR NQR 4JB1 4HF1 — YIMI OEM Fit 3/4"
Key Attributes
Product Summary
OEM direct-fit clutch master cylinder for ISUZU NPR/NKR/NQR (4JB1/4HF1). Features ZL111 aluminum (hardness >110HB), 3/4" precision bore with double honing, and 100% leak testing. Cross-references multiple OEM numbers. 6-12 month warranty; neutral or custom packaging available.
Product Details
Clutch Master Cylinder for ISUZU NPR
,OEM Fit Clutch Master Cylinder 3/4"
,897167406 Clutch Master Cylinder ISUZU NKR
The Clutch Master Cylinder Assembly with OEM numbers 897167406 / 8-97167406-0 is a direct-fit replacement for ISUZU NPR, NKR, and NQR trucks equipped with 4JB1, 4HF1, 4HK1-T, or 4HE1-TC diesel engines. This master cylinder converts clutch pedal force into hydraulic pressure, actuating the clutch release fork to disengage the engine from the transmission for smooth gear changes.
Manufactured from ZL111 aluminum with a verified 3/4" (19.05 mm) bore, this assembly is engineered for reliable, long-term performance in demanding commercial fleet applications.
- Verified Bore Specification: 3/4" (19.05 mm) bore diameter — confirmed against supplier technical data for ISUZU NPR/NKR applications.
- Material & Process Verified: ZL111 aluminum construction with hardness > 110 HB; at least 2 honing processes for a smooth bore finish — confirmed by supplier manufacturing specification.
- OEM Cross-Reference Verified: Replaces 897167406, 8-97167406-0, and cross-references to 8-98117644-0 / 8981176440 / 8-97167406-1 — confirmed against multiple parts catalogs.
- Fitment Confirmation: Confirmed for ISUZU NPR / NKR / NQR with 4JB1 / 4HF1 / 4HK1 / 4HE1 engines — verified against supplier application listings.
- Pre-Delivery Inspection: Each unit undergoes a hydraulic leak test and piston stroke verification before packing — per in-house QC records (standard: 100% inspection before shipment).
- Clutch pedal goes to the floor with no resistance — total loss of hydraulic pressure.
- Clutch pedal feels spongy or does not return properly.
- Fluid leak around the pushrod boot in the cabin or at the master cylinder body.
- Difficulty engaging gears, especially when stopping or driving at low speed.
- Clutch fluid level drops repeatedly without visible hose damage.
| Part Number | 897167406 |
|---|---|
| Product Name | Clutch Master Cylinder |
| Car Model | ISUZU NPR / NKR / NQR |
| Engine Model | 4JB1 / 4HF1 |
| Condition | 100% Brand New |
| Material | High-strength aluminum alloy & precision bearings |
| Installation | Direct OEM replacement |
| Quality Standard | OEM equivalent / ISO quality control |
| Weight | Standard |
| Origin | China Mainland |
| Main Market | Middle East, Asia, Africa, South America, North America & Europe |
| Package | Neutral packing or as requested |
| Warranty | 6 Months |
| Price & Stock | Please contact us for more information |
| Feature | Benefit & Verification Signal |
|---|---|
| 3/4" precision-bored cylinder | Correct fluid displacement for NPR/NKR/NQR clutch systems — verified against supplier specification. |
| ZL111 aluminum with >110 HB hardness | Resists bore wear and deformation under repeated pedal cycles — confirmed by material specification. |
| Double honing process | Smooth bore surface reduces seal wear and extends service life — verified by manufacturing process data. |
| Multi-OE cross compatibility | Simplifies sourcing for mixed ISUZU fleets — cross-referenced against 3+ OEM numbers. |
| OEM-matched fitment | Direct bolt-on OEM hole pattern — no drilling or modification required. |
| Brand | Model | Engine Code | Notes |
|---|---|---|---|
| ISUZU | FSR / FSR 500 | 6HE1 | Primary fitment per OEM number |
| ISUZU | FVR / FTR | 6HE1 (verify) | Some cross-applications reported; confirm by VIN |
Cross-Reference Note: HDA-008 / MC828264 are aftermarket cross-reference numbers that primarily appear in Mitsubishi Fuso brake booster catalogs. This product is primarily intended for ISUZU FSR 6HE1 applications; the above numbers are listed for customer cross-comparison only.
If your vehicle is a Mitsubishi Fuso FK/FM with an MC828264 booster, confirm pushrod length and mounting bolt pattern match before ordering. Both "short" and "long" pushrod variants exist within the MC828264 family.
Always provide your VIN/chassis number for verification. Do not rely solely on cross-reference numbers.
| QC Item | Verification Method |
|---|---|
| Bore diameter | Bore gauge check (target: 19.05 mm) |
| Hydraulic leak test | Pressurized test at ports and seals — 100% unit inspection |
| Piston stroke | Manual stroke test for smooth operation |
| Material hardness | Sample batch hardness check (target: >110 HB) |
| Surface finish | Visual inspection for scoring or burrs |
Important: The clutch hydraulic system is safety-critical. Professional installation is recommended. Bench-bleed the new master cylinder before installation to prevent air from entering the system. Use only the specified clutch/brake fluid.
- 1Disconnect the battery negative terminal. Remove the old master cylinder — disconnect the hydraulic line and unbolt it from the firewall/pedal bracket. Cap the line to prevent fluid loss.
- 2Bench-bleed: Mount the new master cylinder in a vise, fill the reservoir with fresh fluid, and push the piston manually until no air bubbles exit the port.
- 3Install the new master cylinder; torque the mounting nuts to specification.
- 4Reconnect the hydraulic line; hand-start the fitting, then tighten securely.
- 5Fill the reservoir with fresh fluid.
- 6Bleed the clutch system at the release cylinder/slave cylinder until bubble-free fluid emerges.
- 7Function test: Verify firm pedal feel and smooth gear engagement before road testing.
Inspect clutch fluid level and condition every 10,000 km. Check for leaks at the master cylinder and slave cylinder at every service. Replace fluid per the manufacturer's interval. If pedal feel changes or gear engagement becomes difficult, inspect the hydraulic system immediately.
- Neutral carton or customer-specified packaging.
- Suitable for wholesalers, repair shops, and fleet maintenance operations.
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