What is the purpose of the accumulator groove?

The accumulator groove helps to reduce pressure from combustion gases that can build up around the piston rings. This helps to prevent ring fluttering and improves the ring seal, leading to more consistent power output from the engine.

What are the benefits of the Forged Side Relief (FSR) design?

The FSR design minimizes friction and power loss by using a reduced skirt width. It also contributes to weight savings by utilizing a shorter wrist pin, which can improve engine responsiveness.

Are these pistons compatible with all 400 SBC engines?

This piston set is designed for the 400 SBC engine with a 4.145-inch bore and a .165 dome. It's always recommended to verify that these specifications match your specific engine build and requirements before installation.

JE Pistons 400 SBC Dome Piston Set 182055

Name: JE Pistons 400 SBC .165 DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-400-sbc-165-dome-set-of-8-pistons-t14-295319
Price: 1052.79 USD
Availability: BackOrder

JE Pistons 400 SBC .165 DOME Set of 8 Pistons

$1052.79

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

JE Pistons 400 SBC .165 DOME Set of 8 Pistons. Forged in the USA from 2618 aluminum for high-demand performance.

Key Features

Set includes 8 pistons for an 8-cylinder engine.
Forged in the USA from 2618 aluminum for high tensile strength.
Features a .165 dome and a 4.145-inch bore size.
Proprietary Forged Side Relief (FSR) design minimizes friction and saves weight.
May include an accumulator groove to improve ring seal and reduce flutter.
Skirt coating (if applicable) reduces friction and noise.

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Product Details

Forged from 2618 aluminum, these JE Pistons are built for high-demand performance applications. This set is specifically designed for the 400 SBC engine, featuring a .165 dome and a 4.145-inch bore. The 2618 aluminum alloy provides the high tensile strength needed for serious engine builds where durability and performance are critical.

JE Pistons incorporates their proprietary Forged Side Relief (FSR) forging design, which helps minimize friction and power loss by using a reduced skirt width. This design also saves weight by utilizing a shorter wrist pin. Depending on the specific application, these pistons may also include an accumulator groove to help manage combustion gas pressure, reducing ring flutter and improving ring seal for more consistent power delivery. A skirt coating, if included for your application, further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation.

Every component in this set is manufactured 100% in the USA, reflecting JE Pistons' commitment to quality and performance. This piston kit is designed for optimal performance and durability, making it a solid choice for engine builders looking for proven results. Please note that this part is not CARB approved and cannot be shipped to California.