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.

• 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.

• 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