High-Strength Cast Iron Clutch Cover Plate with Diaphragm Spring Design and Heat-Treated Pressure Surface for Isuzu NPR 4BD1

Clutch cover plate (pressure plate assembly) applies clamping force to the clutch disc against the flywheel. Enables smooth engagement and positive disengagement for Isuzu 4BD1 diesel engines.

• OE Quality: Manufactured to Isuzu dimensional and performance specifications for perfect fit and reliable torque transfer
• Diaphragm Spring Design: Consistent clamp load with lower pedal effort
• Heat-Treated Pressure Surface: Resists warping and heat cracking
• Dynamic Balancing: Minimizes vibration for smooth engine operation
• High Clamp Force: Engineered to handle the torque output of the 4BD1 diesel engine
• Corrosion Resistant: Cover is painted or e-coated to resist rust
• Restores Clutch Performance: Eliminates slipping, hard shifting, and chatter
• Direct Replacement: Matches OE dimensions - bolt-on installation
• Cost-Effective: Affordable alternative to genuine OEM without compromising quality

This clutch cover plate is specifically designed for Isuzu NPR trucks with 4BD1 engine.

• ISUZU NPR (NPR59, NPR66, with 4BD1 engine)
• May also fit other Isuzu models using the 4BD1 engine (e.g., NKR, industrial) - verify

• 4-Cylinder, Inline Diesel
• Displacement: 3.9L (3856cc)

Installation steps (overview):

1. Remove transmission and old clutch assembly
2. Inspect and resurface flywheel
3. Clean flywheel surface
4. Install new clutch disc with alignment tool, centering on flywheel
5. Install new clutch cover plate, torque bolts in a star pattern to specification (typically 20-30 Nm for M8 bolts)
6. Remove alignment tool
7. Install new release bearing and pilot bearing
8. Reinstall transmission
9. Test drive for smooth engagement

• Material Verification: Cover casting and spring steel composition tested
• Dimensional Inspection: Cover height, bolt hole pattern, and friction surface flatness verified
• Diaphragm Spring Load Test: Clamp force measured at specified compression
• Finger Height Consistency: All diaphragm spring fingers checked for equal height
• Dynamic Balancing: Rotating assembly balanced (≤ 10 g*cm unbalance)
• Hardness Testing: Pressure surface hardness checked (HRC 45-52)
• Visual Inspection: 100% checked for casting defects or cracks
• Packaged Safely: Wrapped in protective film, boxed with foam

• 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

For pricing, availability, or bulk purchase of the Clutch Cover Plate 5-31220024-0 For Isuzu NPR 4BD1 5312200240 Isuzu Truck Parts, please contact our sales team for a competitive quote and expert technical support.