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Exterior Components› Body Panels and Components
King Engine Bearings
MAIN BEARING SET
SKU: K006 MB 557XP 001
Easy — 1–2 hours
Overview
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Part #: MB 557XP 001
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
Features:
- PMaxBlack for Superior Load Capacity
- Radialock for Optimal Crush Height
- Tri-metal Copper Based Material
MAIN BEARING SET For GM 262, 267, 302, 307, 327, 350
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Vehicle Symptoms
- Loud knocking noise from engine under load
- Low oil pressure at idle or high RPM
- Engine vibration or rough running
- Metal shavings found in oil during change
- Increased engine noise after hard driving
Relevant Conversations
- engine knocking noise when accelerating
- low oil pressure after track day
- best main bearings for SBC 400
- King XP bearings vs Clevite H series
- how to measure main bearing clearance
- main bearing replacement cost
- engine rebuild bearing kit for racing
- SBC main bearing torque specs
- oil pressure drop and knock SBC
- co-purchase: main bearing set with rod bearings
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | King Engine Bearings |
| Part Number | K006 MB 557XP 001 |
About MOTORMIA
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Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
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