JE Pistons 15 Degree LS1 Series 312100L Pistons, Single - LS ASYM DOME

SKU: JEP312100L

Pistons

JE Pistons

JE Pistons 15 Degree LS1 Series 312100L Pistons, Single - LS ASYM DOME

SKU: JEP312100L

Pistons

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

JE Pistons 15 degree LS1 series pistons are designed for stock rods (.945 in. diameter wrist pin) or aftermarket/small block Chevy (.927 in. diameter wrist pin) connecting rods. They have a flat top design that achieves compression ratios suitable for normally aspired applications and are machined for 1.5, 1.5, 3.0mm rings.

Part Type

Pistons

Data: v4.2 - Upd: 2026-10-14 11:02:34

Specifications

Product Attributes - Brand: JE Pistons
Product Attributes - Manufacturer's Part Number: 312100L
Product Attributes - Part Type: Pistons
Product Attributes - Product Line: JE Pistons 15 Degree LS1 Series Pistons
Product Attributes - UPC: 193564207425
Product Attributes - Piston Rings Included: No
Product Attributes - Bore (in.): 4.125 in.
Product Attributes - Bore (mm): 104.775mm
Product Attributes - Stroke: 3.622 in.
Product Attributes - Engine Stroke Type: Stock
Product Attributes - Actual Engine Displacement: 6.3L/387
Product Attributes - Rod Length: 6.135 in.
Product Attributes - Piston Style: Dome, with two valve reliefs
Product Attributes - Piston Material: Forged aluminum
Product Attributes - Compression Height (in.): 1.304 in.
Product Attributes - Piston Head Volume (cc): -8.40cc
Product Attributes - Wrist Pin Style: Press-fit or floating
Product Attributes - Wrist Pin Retainers Included: No
Product Attributes - Wrist Pin Included: No
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	jep312100L
SFX Item ID	4806343
Supplier Item Code	4806343
Manufacturer SKU	312100L
Manufacturer UPC	193564207425
Alternative References	LS1

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.