Engines and Components› Pistons and Piston Rings
United Engine & Machine Co
HYP/CTD PISTON 4.8/5.3L GM
SKU: U00B 3520HC.25MM
Advanced — 4+ hours
Description
These pistons feature a flat top with no valve reliefs and have a bore size of 96.260mm (3.790 in.). They require 1.50mm x 1.50mm x 3.00mm piston rings and have a coated skirt. The wrist pin style is press-fit or floating with a diameter of 0.943 in.
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
| Brand | United Engine & Machine Co |
| Part Number | U00B 3520HC.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