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Engines and Components› Engine Bearings

SEALED POWER

MAIN BEARING SET

$375.99 $252.57 Save $123.42

SKU: S03T 4664M 30

In Stock
In Stock
Ships by Jun 7
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Professional / shop required

Description

Sealed Power Main Bearings are O.E. replacements featuring a steel-backed overplated bronze alloy. Popular for their fatigue resistance and strength, these bearings provide the conformability required for older applications. Manufactured to exacting tolerances, they meet or exceed OEM specifications. This full set is designed for Buick 400, 430, and 455 engines with a -.030 journal size.

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

BrandSEALED POWER
Part NumberS03T 4664M 30

Videos

Building A 455 Buick That Makes Surprising Pump-Gas Power - Engine Power S3, E17

Building A 455 Buick That Makes Surprising Pump-Gas Power - Engine Power S3, E17

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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