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King Engine Bearings

King Engine Bearings Main Bearing Set

MPN: mb 557si 010 Catalog #: 001515420 Category: Main Bearings Check Vehicle Fitment

Product Details

Main Bearing - Alecular SI - 0.010 in Undersize - Small Block Chevy - Kit

We are bearing specialists. King Engine Bearings was founded in 1960 with one simple objective: to supply the highest quality bearings available in the marketplace. By specializing in engine bearings, King has built an extensive product offering that incl

MAIN BEARING SET For GENERAL MOTORS 262, 267, 302, 307, 327, 350

Vehicle Fitment

Universal or product-specific fitment. Please review the product details and contact us if you need help confirming fitment before ordering.

Engine Compatibility

GM - SBCMatched variant: Small Block Chevy

Small Block Chevy; 265–400ci

Fitment note: Engine compatibility is provided as a guide. Please verify all fitment details before ordering.

Product Specs

Brand
King Engine Bearings
Part Number
mb 557si 010
Catalog Number
001515420
Product Line
Main Bearings
Category
Engines & Parts
Type
Main Bearings
UPC / Barcode
611500404917
Vendor Product Category
Engine Components
Vendor Product Subcategory
Bearings
Length
5.30 in
Width
3.65 in
Height
1.85 in
Weight
1.15 lb
Units Per SKU
1
Freight / LTL
No
Ship Alone
No
Air Restricted
No
Prop 65
Y
CARB Approved
Yes
Clearance Item
No

Shipping & Availability

Current status 100 Available - Ready to ship
Estimated timing Usually ships within 24hrs

This item is showing available inventory. Most in-stock performance parts ship quickly, but timing can vary by warehouse, vendor cut-off time, holidays, and carrier pickup.

PROP 65 WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Inventory shown: 100 available as of 6/3/2026.

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