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Main Bearings, Bi-Metal, Silicon Aluminum, Standard Size, GM Gen III/IV LS, Set of 5
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Estimated Ship Date: Monday 10/19/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
SUM-172300
Part Type:
Product Line:
Summit Racing Part Number:
SUM-172300
UPC:
190861068742
Bearing Usage:
Direct replacement
Engine Crankshaft Undersize (in.):
Stock
Engine Crankshaft Undersize (mm):
Stock
Grooved Bearing:
Yes
Groove Location:
Upper
Groove Style:
1/2
Thrust Bearing Oversize:
Stock
Bearing Material:
Bi-metal, silicon aluminum
Quantity:
Sold as a set of 5.
Summit Racing™ Main Bearings
These Summit Racing™ main bearings are just what you need to freshen up your engine. Why? They use silicon aluminum bi-metal construction. Silicon aluminum is the choice for many of today's engine manufacturers because of its high fatigue strength and superior temperature threshold. Bearing wear is dramatically reduced and the fatigue strength is greatly improved.
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Some parts are not legal for use in California or other states with similar laws / regulations
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