Sale

Engines and Components› Engine Bearings

SEALED POWER

MAIN BEARING SET

$270.99 $185.93 Save $85.06

SKU: S03T 139M 1

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

Moderate — 2–4 hours

Description

Sealed Power Competition Series Main Bearing Set for Small Block Chevy 302, 305, 307, 350 engines. These bearings are designed for high-performance applications and demanding conditions, offering high durability, corrosion resistance, decreased wear, and increased fatigue strength. They feature a patented contoured-flange design for increased thrust-load capacity and a three-quarter-length oil groove for enhanced lubricity without compromising load capacity. Made with H-14 Super Duty Alloy for maximum load-carrying capacity. This is a 0.001 inch undersize set.

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 139M 1

Videos

V-8 Engine Rebuild SBC #4 Part 2 Rod Bearing Install

V-8 Engine Rebuild SBC #4 Part 2 Rod Bearing Install

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