Engines and Components› Pistons and Piston Rings

United Engine & Machine Co

KB HYP PISTON KIT SBF 351W

$565.68

SKU: U00B KB151KTM.040

In Stock
In Stock
Ships by Jun 7
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Non-Returnable Item
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Description

The United Engine & Machine Co. KB151KTM.040 are KB Series Hypereutectic 390 Alloy pistons with 16% Silicon, featuring a flat top with two valve reliefs and a 4.040" bore. They are designed for Ford Small Block V8 351W engines with a 3.500" stroke and 5.956" connecting rod, supporting a 359ci displacement and a 9.500" deck height. These pistons offer high performance, tight suggested clearances, and include lockrings and pins.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB151KTM.040

Videos

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351 Windsor Budget Build, No Machine Shop!
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351 Windsor – What You Need to Know About the Ford 351w Small Block [5.8 Liter]
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Building a 500+HP Budget 351w Stroker Motor "The 387 Stroker" 👀
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Ford 351 Windsor Rebuild - Machine Shop Costs
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Rebuilding OBS Ford Bronco 351W engine
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LOCKED UP Ford 351W 5.8L V8 Engine Teardown. How Bad Could It Be?
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Putting the "MODIFY" In 351w How To Roller Cam a 351 Windsor 💪
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Rebuilding A Small Block Ford PART 3 ENGINE ASSEMBLY (351W Swapped New Edge Mustang)

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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