Free Shipping on $75+ Orders|10% Off Your First Order • 30-Day Easy Returns • 150,000+ Parts in Stock

service@yittzyoffroad.comContact Us

Shop All Products

King Engine Bearings Main Bearing Set - BBC GEN 4 5 6 - 1/2 Groove

1 / 3

Hover to zoom

King Engine Bearings

Main Bearing Set - BBC GEN 4 5 6 - 1/2 Groove

Name: Main Bearing Set - BBC GEN 4 5 6 - 1/2 Groove
Brand: King Engine Bearings
SKU: MB556SI020
Price: 30.99 USD
Availability: InStock

MPN: MB556SI020UPC: 00611500424434

In Stock — Ready to Ship

$30.99$66.72SAVE 54%

12 Months

Installation Guide

Fits:B7Bel AirBiscayneBlazerBrookwoodC10C10 PickupC10 SuburbanC1500C20C20 PickupC20 SuburbanC2500C2500 SuburbanC30C30 PickupC3500C3500HDC50C60

Main Bearing - SI-Series - 0.020 in Undersize - Big Block Chevy - Kit

Secure Checkout

SSL Encrypted

Easy Returns

30-day policy

Guaranteed Fitment

Or your money back

Pay Over Time

With Affirm

Usually ships in 1-3 business days

Main Bearing
- SI-Series - 0.020 in Undersize
- Big Block Chevy
- Kit

Earn 30 Yittzy Rewards points with this purchase — 1 point per $1 spent. Join free

Complete the BuildMore from King Engine Bearings

Engine Connecting Rod Bearing Set

Buying Guides

Cold Air Intake for Jeep: Benefits, Top Brands, and Installation Guide Jeep Throttle Body Spacer Review: Do They Actually Work?Best Jeep Performance Chips and Programmers in 2026

Compare Engine Crankshaft Main Bearing Set Best Engine Crankshaft Main Bearing Set →

Weight	1.56 lbs
Length	7.09 in
Width	3.62 in
Height	2.09 in
Part Number	MB556SI020
UPC	00611500424434
Country of Origin	IL
Emissions	Emissions Compliance Exempt
Flange Oversize	FL ON MAX
Height	2.09
Installation Instructions	https://sdda.semadata.org/Standard/King Engine Bearings/installation-guidlines.pdf
Item Quantity/Size	1 EA
Length	7.09
Material	bimetal (aluminum silicon base)
Product Notes	.020 Crank Undersize - Set of 5
Prop 65	WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
Prop 65 (C R or CR)	CR
Qty Per Application	Normal Quantity Used in a Vehicle:1 Each
Undersize	20
Warranty	12 Months
Weight	0.78 lbs
Width	3.62

Main Bearing Set - BBC GEN 4 5 6 - 1/2 Groove

Complete the BuildMore from King Engine Bearings

Rod Brng Sbc W/O Dwl

Rod Brng Sbc Wo/Dowl

Rod Brng Sbc W/O Dwl

Chevrolet Sbc 307ci 350ci & Gen Iii/Iv

Chevrolet Sbc 307ci 350ci & Gen Iii/Iv

Chevrolet Sbc 307ci 350ci & Gen Iii/Iv

Buying Guides

Related Articles

Guide to Alabama Gulf Coast Jeep Meet 2026

Top 2 Epic Jeep Events This April 2026

Guide to Jeep Carolina Invasion 2026

You May Also Like

Brg Chryv8 273318326 5673

General Motors 262 267 302 307 327 350

Main Bearing Set For Chevrolet 396502 Gen IV v vi

Main Bearing Set

Main Bearings Trimetal Performance

Chrysler 273 301 313 318 340

Main Brng Ford sb

Main Set Chry 318

Cart (0 items)