Engines and Components› Engine Bearings

King Engine Bearings

FOR GENERAL MOTORS 366 396 402 4

$250.00

SKU: K006 MB5274SI

Special Order
Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The King Engine Bearings MB5274SI is a high-performance main bearing set designed for General Motors big block engines. This set is engineered for applications including 366, 396, 402, 427, and 502 cubic inch engines. The bearings feature a bi-metal silicon aluminum construction with 2.5-3% silicon content for enhanced strength. They are optimized for medium load engines and nodular cast iron crankshafts, ensuring proper oil clearances and bearing crush.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandKing Engine Bearings
Part NumberK006 MB5274SI

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.

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