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Speed-Pro Competition Series Main Bearings 151M Bearings, Series, Standard Size, Tri Metal, 3/4 Groove, Pontiac, 421, 455, Set of 5

SKU: SLP151M

Main Bearings

Speed-Pro Competition Series Main Bearings 151M Bearings, Series, Standard Size, Tri Metal, 3/4 Groove, Pontiac, 421, 455, Set of 5

SKU: SLP151M

Main Bearings
A$291.96
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

If you're building a serious performance engine, then you'll want to consider Speed-Pro Competition Series main bearings. They were developed in NASCAR and Pro Stock competition, so you know they're tough. The bearings are built on premium 1020AK steel backings and overlaid with Speed-Pro's super-duty H-14 alloy. That layer is then covered with a nickel barrier, followed by a thin lead-tin-copper overplate. However, unlike other performance bearings, there is no flash tin layer on top of that. Speed-Pro's engineers have determined that such a layer can actually move around under high loads—sometimes with undesirable consequences. Depending on the application, these main bearings have oil grooves for enhanced lubrication, while maintaining a maximum bearing surface area. They also feature Speed-Pro's exclusive contoured-flange thrust bearing technology for higher thrust-loading capacity. Competition Series main bearings are available in nearly a hundred configurations for countless vehicle and engine applications.

Part Type

Main Bearing Set

Data: v4.2 - Upd: 2026-09-30 14:11:28

Specifications

Product Attributes - Brand
Sealed Power
Product Attributes - Manufacturer's Part Number
151M
Product Attributes - Part Type
Main Bearings
Product Attributes - Product Line
Speed-Pro Competition Series Main Bearings
Product Attributes - UPC
087674972444
Product Attributes - Bearing Usage
Performance
Product Attributes - Engine Crankshaft Undersize (in.)
Stock
Product Attributes - Engine Crankshaft Undersize (mm)
Stock
Product Attributes - Grooved Bearing
Yes
Product Attributes - Groove Location
Upper and lower
Product Attributes - Groove Style
3/4
Product Attributes - Thrust Bearing Oversize
Stock
Product Attributes - Bearing Material
Tri-metal copper-lead alloy
Product Attributes - Quantity
Sold as a set of 5.

Reference Information

Brand Name/s Sealed Power
StreetFX SKU slp151M
SFX Item ID 5029261
Supplier Item Code 5029261
Manufacturer SKU 151M
Manufacturer UPC 87674972444
Alternative References SEA151M

Compatibility

Application Data
  • MakePONTIAC
    Beginning Year1963
    Ending Year1966
    Engine TypeV8
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    Beginning Year1970
    Ending Year1976
    Engine TypeV8
    Engine FamilyPontiac V8
    Engine Size7.5L/455
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1963
    Ending Year1963
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1963
    Ending Year1963
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1963
    Ending Year1963
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1963
    Ending Year1963
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1963
    Ending Year1963
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1963
    Ending Year1963
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1963
    Ending Year1963
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1963
    Ending Year1963
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1963
    Ending Year1963
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1963
    Ending Year1964
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1963
    Ending Year1964
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1964
    Ending Year1964
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1964
    Ending Year1964
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1964
    Ending Year1964
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1964
    Ending Year1964
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1964
    Ending Year1964
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1964
    Ending Year1964
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1964
    Ending Year1964
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1965
    Ending Year1966
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1965
    Ending Year1966
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1965
    Ending Year1966
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1965
    Ending Year1966
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421
  • MakePONTIAC
    ModelBONNEVILLE
    SubmodelBASE
    Beginning Year1965
    Ending Year1966
    Engine TypeV8
    Liter6.9
    CID421
    CC6900
    Engine FamilyPontiac V8
    Engine Size6.9L/421

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