Engines and Components› Engine Bearings

SEALED POWER

MAIN BEARING SET

$512.18

SKU: S03T 963M 20

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

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Description

Sealed Power Vintage components provide coverage for applications over 35 years old, restoring classics with like-new performance. This tri-metal, copper-lead, high-performance main bearing set is for Ford and Mercury 312 Y-block engines, available for 0.020 in. (0.50mm) crankshaft undersizes. It is a direct replacement set of 5 bearings with a full groove on both upper and lower bearings, and a stock thrust bearing oversize. Leading-edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.

Fitment

Fitment Guaranteed

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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 963M 20

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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