JE Pistons 15 Degree LS1 Series 312123L Pistons, Single - LS ASYM DM 4100STRKR

SKU: JEP312123L

Pistons

JE Pistons

JE Pistons 15 Degree LS1 Series 312123L Pistons, Single - LS ASYM DM 4100STRKR

SKU: JEP312123L

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.

We accept

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 10:59:21

Specifications

Product Attributes - Brand: JE Pistons
Product Attributes - Manufacturer's Part Number: 312123L
Product Attributes - Part Type: Pistons
Product Attributes - Product Line: JE Pistons 15 Degree LS1 Series Pistons
Product Attributes - UPC: 193564206961
Product Attributes - Piston Rings Included: No
Product Attributes - Bore (in.): 4.030 in.
Product Attributes - Bore (mm): 102.362mm
Product Attributes - Stroke: 4.100 in.
Product Attributes - Engine Stroke Type: Stroked
Product Attributes - Actual Engine Displacement: 6.8L/418
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): -2.50cc
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	jep312123L
SFX Item ID	4808948
Supplier Item Code	4808948
Manufacturer SKU	312123L
Manufacturer UPC	193564206961
Alternative References	LS1, 4100STRKR

Compatibility

Application Data

Make CHEVROLET
Beginning Year 1997
Ending Year 2004
Engine Type V8
Engine Family Chevy small block Gen III/IV (LS-based engines)
Engine Size 5.7L/350
Application Notes This is a rightt side replacement piston.
Make CHEVROLET
Beginning Year 2005
Ending Year 2014
Engine Type V8
Engine Family Chevy small block Gen III/IV (LS-based engines)
Engine Size 5.3L/325
Application Notes This is a rightt side replacement piston.
Make CHEVROLET
Beginning Year 2005
Ending Year 2019
Engine Type V8
Engine Family Chevy small block Gen III/IV (LS-based engines)
Engine Size 6.0L/364
Application Notes This is a rightt side replacement piston.