King Engine Bearings SI-Series Main Bearings .001 Undersize Small Block MB556SI001

King SI-Series main bearings are recommended for OE applications. These replacement bearings are designed for aftermarket gasoline or diesel engine rebuilding—and performance engines with factory crankshafts. The bearings have an improved crankshaft finish for reducing microscopic ferrite peaks on improperly ground or polished nodular cast iron crankshafts. King SI-Series main bearings feature improved oil clearance to reduce wear and increase engine life, which in turn reduces operating noise, vibration, and excess oil flow. Order the bearing set designed for fitment on your make and model.

• Brand: King Engine Bearings
• Manufacturer Part Number: MB556SI001
  
• Bearing Class: OE Replacement
• Bearing Size: .001 Undersized
• Coated: No
• Grooved Bearing: Yes
• Groove Location: Upper
• Groove Style: 1/2
• Bearing Material: Bi-metal, Silicon Aluminum