What material are these pistons made from and why is it important?

These pistons are forged from 2618 aluminum. This alloy offers high tensile strength, which is essential for handling the increased pressures and temperatures found in high-performance or racing engines where stock pistons might fail.

What is the benefit of the Forged Side Relief (FSR) design?

The FSR design helps to minimize friction and reduce power loss by using a narrower skirt. It also saves additional weight with a shorter wrist pin, contributing to overall engine efficiency and performance.

Are these pistons compatible with all 4.6L 3V engines?

While designed for the 4.6L 3V Modular engine platform, specific fitment details like bore size and pin diameter should always be verified against your engine's specifications. Additionally, these pistons are not CARB approved and cannot be shipped to California.

JE Pistons 4.6 3V Forged Piston Set 314597

Name: JE Pistons 4.6 3V MODULAR 9.5:1 Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-4-6-3v-modular-9-5-1-set-of-8-pistons-t14-296483
Price: 950.07 USD
Availability: BackOrder

JE Pistons 4.6 3V MODULAR 9.5:1 Set of 8 Pistons

$950.07

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 4.6 3V MODULAR 9.5:1 Set of 8 Pistons. Forged in the USA from 2618 aluminum for high-demand performance.

Key Features

Fits 4.6L 3V Modular engines.
Set includes 8 forged pistons.
Features a 9.5:1 compression ratio.
Forged in the USA from 2618 aluminum for high tensile strength.
Proprietary Forged Side Relief (FSR) design minimizes friction and power loss.
Includes accumulator groove (application dependent) for improved ring seal.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

If you're rebuilding the top end of your 4.6L 3V modular engine for serious performance, a set of high-strength pistons is crucial. These JE Pistons are forged from 2618 aluminum, a material known for its high tensile strength, making them well-suited for demanding applications where stock pistons might not hold up. They're designed with a specific 9.5:1 compression ratio, which is a popular choice for naturally aspirated or boosted builds looking for a good balance of power and pump gas compatibility.

JE Pistons brings over 75 years of experience to the table, and these pistons are made 100% in the USA. They feature a proprietary Forged Side Relief (FSR) design that helps minimize friction and reduce weight by using a narrower skirt and a shorter wrist pin. Depending on the specific application, you might also find an accumulator groove to help reduce combustion gas pressure, which improves ring seal and keeps power consistent. Some applications also include a skirt coating to further reduce friction and wear, while also helping to quiet down the engine's operating noise.

This set includes eight pistons, each with a 3.552-inch bore and the necessary components for installation. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For a robust engine build that prioritizes durability and performance, these JE Pistons are a solid option.