Engines and Components› Pistons and Piston Rings

JE Pistons

SBC 400 13- 4.125/.927/-3.5CC

$1,281.66

SKU: J001 377972

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Special Order
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Non-Returnable Item
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Description

JE Pistons 377972 is a piston set for Chevrolet Small Block 400 engines (400 SBC - 13 degree heads), constructed from 2618 forged aluminum with a 4.125 in bore and 1.000 in compression height. It is designed for high-performance and custom engine builds, featuring Forged Side Relief (FSR) design, optional skirt coating, and accumulator grooves to enhance durability and performance.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandJE Pistons
Part NumberJ001 377972

Videos

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Which SRP Piston is Right for You?
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2618 or 4032? Tips for Choosing the Best Piston Alloy for Your Performance Engine from RaceTec
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The go to Ring compressor tool to install your pistons without damaging the piston rings. #rsgarage
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How to identify your JE Pistons
Piston Coatings 101: Which is the Right One for You?

Piston Coatings 101: Which is the Right One for You?
How to Measure Piston to Wall Clearance on a JE Perfect Skirt Piston

How to Measure Piston to Wall Clearance on a JE Perfect Skirt Piston
How to select the Correct Piston Bore Size for your Engine Build - Real Street Performance

How to select the Correct Piston Bore Size for your Engine Build - Real Street Performance
Difference Between 2618 and 4032 Forged Pistons

Difference Between 2618 and 4032 Forged Pistons
My new tool for getting stuck pistons out! #hotrodding #flathead #quicktips

My new tool for getting stuck pistons out! #hotrodding #flathead #quicktips
Piston Options - What to look for when buying pistons for your 2JZ | RS Garage Jays Tech Tips

Piston Options - What to look for when buying pistons for your 2JZ | RS Garage Jays Tech Tips

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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