Engines and Components› Engine Bearings
King Engine Bearings
King Engine Bearings HolDEn Alloytec 175/190 (Size +0.25mm) Main Bearing Set
SKU: K006 MB4272SI0.25
Moderate — 2–4 hours
Description
Part #: MB4272SI0.25
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:
- Bi-metal Aluminum Material
- Ideal for medium-load engines
- Lead Free Enviromentally Safe Composite
MAIN BEARING SET For HOLDEN ALLOYTEC 175, 190
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
MIA's Description
These bearings feature an improved crankshaft finish to reduce microscopic ferrite peaks on improperly ground or polished nodular cast iron crankshafts. King SI-Series main bearings also offer improved oil clearance to reduce wear, increase engine life, and decrease operating noise, vibration, and excess oil flow.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | King Engine Bearings |
| Part Number | K006 MB4272SI0.25 |
Videos
The BEST Bearings For Your Build - King Engine Bearings pMaxKote
King Engine Bearing & Crankshaft Installation Guide Feat. XP Bearings
Main Bearings Installation
PRI 2016: Street Outlaws' Derek Travis Talks King Racing Engine Bearings
Everything you need to know about Engine/Main Bearings
Engine Bearing Tech Myths | What You Really Need To Know
Identifying a King Bearing Set
Which King Engine Bearing is best for your application
King Racing XP & XPG Bearings | pMax Black - Bull's Eye Tolerance
ACL Bearings | Behind The Power
Buy with Confidence
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.
View Full Return Policy