Engines and Components› Pistons and Piston Rings
JE Pistons
FORD FLATHEAD 3.312/1.311
SKU: J001 371841
Moderate — 2–4 hours
Description
Key Features:
* Premium Material: Made from 2618 aluminum, these pistons boast high tensile strength, making them ideal for demanding performance applications.
* Optimized Design: Each piston is tailored for specific engine applications, ensuring optimal performance and durability.
* Proprietary Forged Side Relief (FSR): This innovative design minimizes friction and power loss, featuring a reduced skirt width and a shorter wrist pin for weight savings.
* Skirt Coating: Depending on your application, the skirt coating reduces friction and wear, while also lowering operating noise.
* Accumulator Groove: This feature helps manage combustion gases, reducing ring fluttering and improving ring seal for consistent power delivery.
* 100% Made in the USA: Quality craftsmanship you can trust.
Specifications:
* Piston Series: JE Pistons
* Cylinder Head: FLATHEAD
* Bore Diameter: 3.312 inch
* Piston Head Type: Dome
* Compression Height: 1.311 inch
* Piston Volume: 0.00 CC
* Piston Material: 4032
* Piston Quantity: 8
* Forging Type: Round
* Ring Set Included: Yes
* Top Compression Ring Thickness: 0.5950 inch
* Second Compression Ring Thickness: 0.5950 inch
* Oil Ring Thickness: 0.159 inch
* Wrist Pin Material: 5115 Low Carbon Steel, Case Hardened
* Wrist Pin Length: 2.500 inch
* Wrist Pin Wall Thickness: 0.140 inch
* Sold As: Set of 8
Fitment
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Specifications
| Brand | JE Pistons |
| Part Number | J001 371841 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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