Exterior Components Body Panels and Components

United Engine & Machine Co

SNGL HYP/CTD PISTON 6.8L FORD

$51.67

SKU: U00B S3161HC.25MM

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

Advanced — 4+ hours

Description

The Silv-O-Lite S3161HC.25MM is a hypereutectic aluminum piston designed for stock engine stroke applications. It features a dish style with no valve reliefs and a bore size of 90.950mm (3.581 in.).

This piston includes a wrist pin and has a compression height of 1.210 inches. The ring groove thickness is 1.5mm, 1.5mm, and 3.0mm. It also has a piston head volume of +5.70cc and a press-fit wrist pin style.

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

BrandUnited Engine & Machine Co
Part NumberU00B S3161HC.25MM

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