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King Engine Bearings

King Engine Bearings

King SI-Series Main Bearings MB 556SI 040 Bearings, 1/2 Groove, .040 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chevy, Big Block, Set of 5

SKU: KINGMB_556SI_040

Main Bearings
King SI-Series Main Bearings MB 556SI 040 Bearings, 1/2 Groove, .040 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chevy, Big Block, Set of 5
King Engine Bearings

King Engine Bearings

King SI-Series Main Bearings MB 556SI 040 Bearings, 1/2 Groove, .040 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chevy, Big Block, Set of 5

SKU: KINGMB_556SI_040

Main Bearings
A$93.80
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.
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Description

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.

Part Type

Main Bearings

Data: v4.2 - Upd: 2026-10-14 10:42:30

Specifications

Product Attributes - Brand
King Engine Bearings
Product Attributes - Manufacturer's Part Number
MB 556SI 040
Product Attributes - Part Type
Main Bearings
Product Attributes - Product Line
King SI-Series Main Bearings
Product Attributes - UPC
611500424458
Product Attributes - Bearing Usage
Direct replacement
Product Attributes - Engine Crankshaft Undersize (in.)
0.040 in.
Product Attributes - Engine Crankshaft Undersize (mm)
1.00mm
Product Attributes - Grooved Bearing
Yes
Product Attributes - Groove Location
Upper
Product Attributes - Groove Style
1/2
Product Attributes - Thrust Bearing Oversize
Maximum
Product Attributes - Bearing Material
Bi-metal, silicon aluminum
Product Attributes - Quantity
Sold as a set of 5.

Reference Information

Brand Name/s King Engine Bearings
StreetFX SKU kingMB_556SI_040
SFX Item ID 4858405
Supplier Item Code 4858405
Manufacturer SKU MB 556SI 040
Manufacturer UPC 611500424458
Alternative References KGB-MB556SI040, 556SI

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year1966
    Ending Year1969
    Engine TypeV8
    Engine FamilyChevy big block Mark IV
    Engine Size7.0L/427
  • MakeCHEVROLET
    Beginning Year1970
    Ending Year1990
    Engine TypeV8
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
  • MakeCHEVROLET
    Beginning Year1991
    Ending Year1995
    Engine TypeV8
    Engine FamilyChevy big block Gen V
    Engine Size7.4L/454
  • MakeCHEVROLET
    Beginning Year1991
    Ending Year1995
    Engine TypeV8
    Engine FamilyChevy big block Gen V
    Engine Size8.2L/502
  • MakeCHEVROLET
    ModelB7
    SubmodelB7T042
    Beginning Year1999
    Ending Year2000
    Engine TypeV8
    Liter7.4
    CID454
    Engine FamilyChevy big block Gen VI
    Engine Size7.4L/454
    Engine VIN CodeD
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1965
    Ending Year1969
    Engine TypeV8
    Liter6.5
    CID396
    CC6489
    Engine FamilyChevy big block Mark IV
    Engine Size6.5L/396
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1966
    Ending Year1969
    Engine TypeV8
    Liter7.0
    CID427
    CC6998
    Engine FamilyChevy big block Mark IV
    Engine Size7.0L/427
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter6.6
    CID402
    CC6588
    Engine FamilyChevy big block Mark IV
    Engine Size6.6L/402
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.4
    CID454
    CC7441
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1972
    Ending Year1972
    Engine TypeV8
    Liter6.6
    CID402
    CC6588
    Engine FamilyChevy big block Mark IV
    Engine Size6.6L/402
    Engine VIN CodeS
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1972
    Ending Year1972
    Engine TypeV8
    Liter6.6
    CID402
    CC6588
    Engine FamilyChevy big block Mark IV
    Engine Size6.6L/402
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1972
    Ending Year1972
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeV
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1972
    Ending Year1972
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeW
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1972
    Ending Year1972
    Engine TypeV8
    Liter7.4
    CID454
    CC7441
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeV
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1973
    Ending Year1973
    Engine TypeV8
    Liter7.4
    CID454
    CC7441
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeX
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1973
    Ending Year1974
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeX
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1973
    Ending Year1974
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeY
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1974
    Ending Year1974
    Engine TypeV8
    Liter7.4
    CID454
    CC7441
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeY
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1975
    Ending Year1975
    Engine TypeV8
    Liter7.4
    CID454
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine VIN CodeY
  • MakeCHEVROLET
    ModelBISCAYNE
    SubmodelBASE
    Beginning Year1965
    Ending Year1969
    Engine TypeV8
    Liter6.5
    CID396
    CC6489
    Engine FamilyChevy big block Mark IV
    Engine Size6.5L/396
  • MakeCHEVROLET
    ModelBISCAYNE
    SubmodelBASE
    Beginning Year1966
    Ending Year1969
    Engine TypeV8
    Liter7.0
    CID427
    CC6998
    Engine FamilyChevy big block Mark IV
    Engine Size7.0L/427
  • MakeCHEVROLET
    ModelBISCAYNE
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter6.6
    CID402
    CC6588
    Engine FamilyChevy big block Mark IV
    Engine Size6.6L/402
  • MakeCHEVROLET
    ModelBISCAYNE
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.4
    CID454
    CC7439
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
  • MakeCHEVROLET
    ModelBISCAYNE
    SubmodelBASE
    Beginning Year1970
    Ending Year1971
    Engine TypeV8
    Liter7.4
    CID454
    CC7441
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454

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