Exterior Components› Body Panels and Components

United Engine & Machine Co

FORD 347 ROD 5.400 FLAT TOP +6.5CC 2V KB HYPER PISTON SET

$66.34

SKU: U00B KB246.STD

In Stock
In Stock
Ships by Jun 15
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Non-Returnable Item
INSTALL DIFFICULTY
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Professional / shop required

Description

The United Engine & Machine Co KB246.STD is a set of hypereutectic pistons designed for Ford Small Block V8 engines. These pistons feature a flat top with two valve reliefs and a 4.030 in. bore, intended for a 3.400 in. crankshaft stroke and 5.400 in. connecting rods. The pistons are made from a 390 aluminum alloy with a T6 heat treatment, offering increased strength and performance.

Each piston has a +6.50cc head volume and a 1.090 in. compression height. The wrist pin style is press-fit or floating, with press-fit or floating wrist pins and retainers included. The piston ring thickness is specified as 1/16 in. x 1/16 in. x 3/16 in., and the rings are not included with this set.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB246.STD

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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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