JE Pistons Chevrolet LS Gen III/IV Piston – 4.000 in. Bore – 1.065 in. CH, -5.00 CC Set of 1 311990L

JE Pistons Chevrolet LS Gen III/IV Piston – 311990L

Looking for a reliable piston that can keep up with your Chevrolet LS Gen III or IV engine? The JE Pistons Chevrolet LS Gen III/IV Piston (part number 311990L) is designed just for that! With a bore diameter of 4.000 inches and a compression height of 1.065 inches, this piston is engineered to deliver the performance you need on the track or the street.

Why Choose JE Pistons?

JE Pistons has been a trusted name in forged racing pistons for over 75 years. Each piston is forged and machined 100% in the USA, ensuring top-notch quality and durability. Whether you’re hitting the dirt track or the drag strip, these pistons have proven their worth time and again, making them a go-to choice for performance enthusiasts.

Features That Matter

< li >High-Strength Material: Crafted from 2618 aluminum, this piston offers the high tensile strength required for demanding performance applications.

< li >Optimized Design: Each piston is tailored for specific engine applications, ensuring you get the best in performance and durability.

< li >Proprietary Forged Side Relief (FSR): This innovative design minimizes friction and power loss, thanks to a reduced skirt width and a shorter wrist pin.

< li >Skirt Coating: Depending on your application, the skirt coating reduces friction and wear, leading to quieter operation.

< li >Accumulator Groove: This feature helps manage combustion gases, reducing ring flutter and improving ring seal for consistent power delivery.

< li >Made in the USA: You can trust in the quality and craftsmanship of these pistons.

Specifications

< li >Piston Series: JE Pistons

< li >Cylinder Head Compatibility: LS 12 DEG/15 DEG COMBO VR

< li >Bore Diameter: 4.000 inch

< li >Piston Head Type: Flat

< li >Compression Height: 1.065 inch

< li >Piston Volume: -5.00 CC

< li >Piston Material: 2618

< li >Piston Quantity: 1

< li >Forging Type: FSR

< li >Piston Orientation: Left

< li >Piston Average Weight: 348 GR

< li >Ring Set Included: No

< li >Top Compression Ring Thickness: 0.0480 inch

< li >Second Compression Ring Thickness: 0.0600 inch

< li >Wrist Pin Material: 5115 Low Carbon Steel, Case Hardened

< li >Wrist Pin Outer Diameter: 0.927 inch

< li >Wrist Pin Length: 2.250 inch

< li >Wrist Pin Wall Thickness: 0.150 inch

< li >Sold As: Set of 1

What Customers Are Saying

Customers rave about the JE Pistons 311990L for its durability and performance. Many have noted improved engine responsiveness and power delivery after installation. The quality of the materials and the precision engineering have left users impressed, making this piston a favorite among racing enthusiasts.