High-Quality Organic Friction Material Clutch Disc with Torsional Vibration Dampers and Spring-Cushioned Design for ISUZU NKR55 4JB1T Engine

Premium-quality clutch disc provides smooth engagement and reliable power transfer between the engine and transmission, ensuring efficient drivability and long service life for ISUZU NKR55 trucks with 4JB1T turbo diesel engines.

The Clutch Disc (OEM Numbers: 8980806610 / 8-98080661-0) is a premium-quality, direct replacement drivetrain component designed specifically for ISUZU NKR55 series light-duty trucks equipped with the 4JB1T turbo diesel engine. This precision-engineered clutch disc is the core friction component of the clutch assembly, responsible for transmitting engine torque from the flywheel to the transmission input shaft through friction engagement.

• OE Quality: Manufactured to strict dimensional and material specifications for perfect fit and function
• High-Quality Friction Material: Premium organic friction compound provides consistent engagement and excellent wear resistance
• Precision-Splined Hub: Accurate spline fitment ensures proper engagement with the transmission input shaft
• Torsional Damper Springs: Absorb engine vibrations for smooth power delivery and reduced transmission wear
• Optimized Cushioning: Spring-cushioned design ensures smooth engagement and reduces driveline shock
• Heat Resistant: Engineered to withstand high temperatures generated during clutch operation
• Restores Power Transfer: Eliminates slipping and ensures full engine torque reaches the transmission
• Smooth Engagement: Eliminates grabbing and chatter for comfortable driving
• Direct Replacement: Simple installation during clutch service
• Long Service Life: Durable construction for reliable performance in commercial applications
• Prevents Driveline Damage: Proper clutch function protects the transmission and drivetrain

This clutch disc is specifically designed for ISUZU light-duty trucks. Common applications include:

• ISUZU NKR55 - Light-Duty Trucks
• ISUZU NKR (various models with 4JB1T engine)
• ISUZU NPR (select light-duty models with 4JB1T engine)
• ISUZU ELF (select models with 4JB1T engine)

• 4-Cylinder, Inline Diesel
• Displacement: 2.8L (2771cc)
• Turbocharged
• Valvetrain: OHV
• Widely used in NKR55 and various light-duty applications

Professional installation required. Proper procedure is critical for reliable clutch operation:

1. Disconnect battery and remove transmission - Safely disconnect the battery and remove the transmission assembly
2. Remove the old clutch - Remove the pressure plate and clutch disc from the flywheel
3. Inspect the flywheel - Check the flywheel friction surface for wear, scoring, or heat damage
4. Resurface or replace the flywheel - Refinish the flywheel surface to restore flatness, or replace if damaged
5. Inspect/replace the pilot bearing - Check and replace the pilot bearing/bushing in the crankshaft
6. Clean thoroughly - Clean the flywheel and pressure plate mounting surfaces of oil and debris
7. Inspect the new clutch disc - Verify the disc is the correct size and spline count
8. Use a clutch alignment tool - Insert the alignment tool through the disc and pilot bearing to center the disc
9. Position the disc and pressure plate - Place the new disc on the flywheel, then install the pressure plate
10. Install pressure plate bolts - Tighten the pressure plate bolts evenly in a crisscross pattern
11. Torque to specification - Torque the pressure plate bolts to manufacturer specification
12. Remove the alignment tool - Verify the disc is centered and remove the alignment tool
13. Replace release bearing - Install a new release bearing in the transmission bell housing
14. Lubricate moving parts - Apply appropriate high-temperature grease to the release bearing fork and pivot points
15. Reinstall transmission - Reinstall the transmission and all connected components
16. Adjust clutch free play - Adjust the clutch pedal free play per manufacturer specifications
17. Check operation - Test clutch pedal feel and travel; check clutch engagement and release
18. Road test - Road-test the vehicle to verify smooth engagement and proper clutch function

• Material Verification: Friction material composition verified against OE specifications
• Dimensional Inspection: Outer diameter, spline dimensions, and disc thickness verified against OEM tolerances
• Friction Surface Inspection: Surface finish and flatness checked for proper engagement
• Spline Fitment Testing: Spline dimensions and fitment verified to ensure proper input shaft engagement
• Damper Spring Testing: Spring rates and functionality verified for proper vibration absorption
• Riveting/Bonding Integrity: Friction material attachment verified for strength and durability
• Runout Testing: Disc runout verified to prevent engagement issues
• Balance Testing: Ensures balanced operation for smooth performance
• Visual Inspection: 100% checked for defects or damage
• Packaged Safely: Individually packaged to prevent damage and contamination

• 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