Exterior Components› Body Panels and Components
King Engine Bearings
MB5257SIGENERAL MOTORS 379 V8 OHV
SKU: K006 MB5257SI
Easy — 1–2 hours
Description
These bearings offer improved oil clearance to reduce wear, increase engine life, and minimize operating noise, vibration, and excess oil flow. They are recommended for engines with factory crankshafts and feature an improved crankshaft finish for better performance on various crankshaft types.
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 MB5257SI |
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