Standard Size Crankshaft Bearing Set with Steel-backed Alloy Overlay for Direct OEM Replacement in Isuzu NKR NPR

Standard crankshaft metal kit (main bearing set) provides precision bearing surfaces for the crankshaft journals, ensuring proper oil clearance and reduced friction. Restores engine performance for Isuzu NKR/NPR diesel engines.

• OE Quality: Manufactured to Isuzu dimensional and material specifications for perfect fit and reliable operation
• Standard Size: Direct replacement for factory crankshafts
• Precision Oil Clearance: Engineered to maintain correct hydrodynamic oil film
• Durable Overlay: High-performance alloy provides high load-carrying capacity
• Restores Engine Performance: Eliminates low oil pressure, knocking, and bearing wear
• Direct Replacement: Matches OE width, diameter, and oil hole positions
• Cost-Effective: Affordable alternative to genuine bearings

This standard crankshaft metal kit is designed for Isuzu NKR and NPR trucks with various diesel engines.

Installation steps (overview):

1. Remove crankshaft and clean main bearing bores
2. Measure crankshaft journal diameters
3. Select correct bearing size (standard or undersize)
4. Clean new bearings and lubricate with assembly lube
5. Install upper shells in block, lower shells in caps
6. Place crankshaft, install caps, torque to specification
7. Use plastigauge to verify oil clearance
8. Final torque and rotate crankshaft to check smoothness

• Material Verification: Steel backing and overlay composition tested
• Dimensional Inspection: Wall thickness, length, and crush height verified
• Roundness Test: Bearings measured for eccentricity
• Oil Hole Alignment: Lubrication passages checked
• Hardness Testing: Overlay hardness within specification
• Visual Inspection: 100% checked for defects

• 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