Jeep 4.6L Hypereutectic Pistons

Name: Jeep 4.6L Hypereutectic Pistons
Brand: UNITED ENGINE MACHINE
SKU: 648-KB424C.030
Price: 297.73 USD
Availability: InStock

^$297⁷³

Ships on 09/10/2026

Lowest Price Guarantee

Jeep
4.6 Stroker

27.5cc Dish
.030" Bore
Use w/6.123'' Connecting Rod & 3.895'' Crank Stroke
Comp. Ratio: 9.6/71cc; 8.4/87cc; 8.1/96cc; 7.8/111cc
6/pkg

100% CNC Machined Pistons

New high silicon alloys and diamond tooling have give Keith Black designers the material and equipment for performance breakthroughs in engine design. KB piston are 100% CNC machined and T-6 heat treated from 16%-18% silcon Hypereutectic alloy. Features include drilled oil returns and pin oil supply, spiral wound retaining ring, 100% diamond turned, compensated high strength ring lands, high top ring location, 360° pressure pin oiling, diamond honed pin hole and lightweight rigid rib skirt design.

Features:

390 Hypereutectic alloy with 16% Silicon
Fully machined crowns and valve reliefs
Drilled oil drain backs
Full floating wrist pins
Triple wound spiral locks
Reflective alloy allows 2% power increase
Quench dome technology minimizes deterioration
Zero deck quench designs
Sold in Sets (except when noted as 1 piston per package)

Part TypePiston

Product LineUEM Pistons KB Signature Series Hypereutectic Jeep Pistons

BrandUNITED ENGINE MACHINE

Package Height5.2

Package Width9.4

Package Length13.8

Weight7.99 PG

Part CategoryPerformance Parts

Part FitmentSemi Universal

Vendor Part NumberKB424C.030

Package Qty1

Package TypeEA

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