Cast Pistons Big Block Chevy 402 4.155 in. Bore (+.030)

Name: Cast Pistons Big Block Chevy 402 4.155 in. Bore (+.030)
Brand: SEALED POWER
SKU: 844-402P30
Price: 743.86 USD
Availability: InStock

^$743⁸⁶

Ships on 09/24/2026

Lowest Price Guarantee

GM Pistons

Big Block Chevy 402
4.155 in. Bore (+.030)
Crowned, w/ valve reliefs
Ring Groves: 5/64, 5/64, 3/16 in.
Set of 8

The value of Speed-Pro's line of cast aluminum pistons are hard to beat for budget or stock-style rebuilds. They are made from high-quality aluminum alloys and feature a carefully controlled casting, heat-treating, and CNC-machining process. And, because they're designed and manufactured to exceed OEM specs, they'll provide improved reliability, performance, and a long service life.

Part TypePiston

Product LineSpeed-Pro Cast Pistons

BrandSEALED POWER

Package Height4.8

Package Width10.3

Package Length20.5

Weight14.79 PG

Part CategoryReplacement Parts

QuantitySet of 8

Vendor Part Number402P30

Package Qty1

Package TypeEA

No Questions

No Reviews

Some parts are not legal for use in California or other states with similar laws / regulations

Cast Pistons Big Block Chevy 402 4.155 in. Bore (+.030)

⚠️ Warning

Motor Vehicles

Tools

Electrical Cords