High-strength alloy steel heat-treated clutch shift block with corrosion-resistant coating for ISUZU NKR55 4JB1T
Precision-machined steel block that transfers clutch pedal movement to the release fork, ensuring smooth clutch disengagement and precise gear changes. Heat-treated for wear resistance.
The Clutch Shift Block (OEM Numbers: 8-97316602-0 / 8973166020), also known as a clutch release block or shift fork pivot, is a premium-quality, direct replacement transmission component designed specifically for ISUZU NKR55 series light trucks equipped with the 4JB1T turbocharged diesel engine and manual transmission.
| Part Number | 8-97316602-0, 8973166020 |
| Product Name | Clutch Shift Block |
| Car Model | ISUZU NKR55 |
| Engine Model | Isuzu 4JB1T |
| Condition | 100% Brand New |
| Material | High-strength alloy steel & precision bearings |
| Installation | Direct OEM replacement |
| Quality Standard | OEM equivalent / ISO quality control |
| Main Market | Middle East, Asia, Africa, South America, North America & Europe |
- OE Quality: Manufactured to strict ISUZU OEM dimensional and material standards for perfect, direct-fit replacement
- Critical Linkage Component: Interface between hydraulic clutch system and mechanical release fork
- Heat-Treated Alloy Steel: Forged or CNC-machined construction with optimal hardness (HRC 50-55) for wear resistance
- Precision-Ground Surfaces: Low-friction finish (Ra ≤ 0.4 μm) reduces wear on release fork
- Corrosion-Resistant Coating: Zinc or phosphate coating prevents rust in high-moisture environments
- Restores Clutch Feel: Fixes sloppy pedal feel, gear clash, and clutch chatter
- Direct Replacement: Simple slide-on installation with no modifications required
- Long Service Life: Engineered for 500,000+ km of heavy-duty commercial operation
This clutch shift block is a direct OE replacement for the following ISUZU vehicles. Please verify fitment using your specific chassis number, VIN, or original part number before ordering.
| ISUZU NKR55 / NKR58 / NKR59 | 4JB1T (2.8L Turbo Diesel) 1984–1993 — primary fitment for turbo version |
| ISUZU NKR66 | 4JB1T, 4JB1 1994–2005, compatible |
| ISUZU NHR / NPR (light-duty) | 4JA1, 4JB1, 4JB1T Compatible with 4J engine family |
| ISUZU 100P | 4JB1, 4JB1T Light-duty urban delivery truck |
| ISUZU TFR / TF pickup (select) | 4JB1T Some TFR pickups with MSB-5S transmission |
- Material Verification: Alloy steel composition verified via spectrographic analysis
- Dimensional Accuracy: Key dimensions verified against OE blueprints using CMM equipment (±0.05 mm tolerance)
- Surface Hardness Testing: Rockwell hardness (HRC) tested on batch samples
- Surface Finish Inspection: Ground contact surfaces inspected for micro-finish
- Heat Treatment Validation: Induction case depth verified by micro-sectioning
- Corrosion Resistance: Coating tested for 96-hour salt spray resistance
- ISO 9001:2015 / IATF 16949 Certified: Facility meets international automotive quality standards
- Visual Inspection: 100% inspected for defects and surface damage
- Individual Packaging: Anti-corrosion oil-coated, sealed in moisture-barrier VCI bag
- Wholesale/Bulk Orders: Available for distributors in case packs (5, 10, 20, 50 units)
- Customization: Neutral or private-label retail packaging available for volume orders
- Fast Shipping: Ready stock for immediate dispatch worldwide
- Wholesale Support: Long-term supply agreements and tiered commercial pricing
For pricing, availability, or bulk purchase of the ISUZU Clutch Shift Block 8-97316602-0 (8973166020) for NKR55, 4JB1T, and compatible 4J engine applications, please contact our sales team for a competitive wholesale quote and expert technical support. We respond to all inquiries within 24 hours.
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