JE Pistons LS7 Dome 311930L Pistons, Single - STROKER DOME

SKU: JEP311930L

Pistons

JE Pistons

JE Pistons LS7 Dome 311930L Pistons, Single - STROKER DOME

SKU: JEP311930L

Pistons

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Description

As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons for domestic applications. Engineered, forged, and 100 percent machined, JE Pistons are designed for each specific engine and racing application to provide the ultimate combination of durability and performance. From dirt track to drag strip, JE Pistons' performance is proven in victory lane time and time again. Equip your engine with the best forged pistons— JE Pistons LS7 dome pistons.

Key features:

* Forged using 2618 aluminum, yielding high-tensile strength needed for high-demand performance applications
* Designed specifically for each engine and use application to provide optimized performance durability
* Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin
* Skirt coating (depending on application) reduces friction and wear on piston skirts and cylinder walls while simultaneously reducing operating noise
* Accumulator groove (depending on application) helps reduce pressure from combustion gases, reducing ring fluttering and improving ring seal for consistent power

Part Type

Pistons

Data: v4.2 - Upd: 2026-10-14 11:02:49

Specifications

Product Attributes - Brand: JE Pistons
Product Attributes - Manufacturer's Part Number: 311930L
Product Attributes - Part Type: Pistons
Product Attributes - Product Line: JE Pistons LS7 Dome Pistons
Product Attributes - UPC: 193564209436
Product Attributes - Piston Rings Included: No
Product Attributes - Bore (in.): 4.130 in.
Product Attributes - Bore (mm): 104.902mm
Product Attributes - Stroke: 4.100 in.
Product Attributes - Engine Stroke Type: Stroked
Product Attributes - Actual Engine Displacement: 7.2L/439
Product Attributes - Rod Length: 6.125 in.
Product Attributes - Piston Style: Dome, with two valve reliefs
Product Attributes - Piston Material: Forged aluminum
Product Attributes - Compression Height (in.): 1.065 in.
Product Attributes - Piston Head Volume (cc): -1.10cc
Product Attributes - Wrist Pin Style: Press-fit or floating
Product Attributes - Wrist Pin Retainers Included: Yes
Product Attributes - Wrist Pin Included: Yes
Product Attributes - Pin Diameter (in.): 0.927 in.
Product Attributes - Piston Ring Thickness: 0.047 in. x 0.059 in. x 0.118 in.
Product Attributes - File Fit: No
Product Attributes - Gapless: No
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold individually.
Product Attributes - Notes: Fits left side exhaust valve orientation.

Reference Information

Brand Name/s	JE Pistons
StreetFX SKU	jep311930L
SFX Item ID	4805732
Supplier Item Code	4805732
Manufacturer SKU	311930L
Manufacturer UPC	193564209436
Alternative References	LS7

Compatibility

Application Data

Make CHEVROLET
Beginning Year 2006
Ending Year 2015
Engine Type V8
Engine Family Chevy small block Gen III/IV (LS-based engines)
Engine Size 7.0L/427
Application Notes This is a left side replacement piston.