My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

JE Pistons 190423 Forged Flat Top Piston Set Bore Alloy - 4.040 2618 8-Pack

Manufacturer

Picture for manufacturer JE Pistons

Part Number

190423
7 reviews
Sale Price

$1,096.99

Estimated ship date Sunday, November 08

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

JE Pistons 190423 is a professional-grade forged piston set engineered from 2618 aluminum alloy for high-performance engine builds. This 8-piece matched set features a flat top 18-degree design with a 4.040-inch bore, 1.250-inch compression distance, and 0.927-inch pin diameter. Designed to fit 3.480-inch and 3.500-inch stroke applications, these pistons deliver exceptional strength and reliability for racing and performance street engines.

Key Features:

  • Application-specific forgings with optimized, uniform crown thickness for superior heat distribution
  • Contact reduction groove minimizes frictional drag for increased power output
  • Accumulator groove enhances top ring stability and sealing performance
  • CNC-machined side relief with lower support band provides additional skirt strength
  • Honed pin bores ensure precise pin fit and alignment
  • Double pressure-fed pin oilers for enhanced pin lubrication
  • Wire locks included for secure pin retention

Recommended ring set: J100F8-4040-5. All JE Pistons sets are precision-matched for balanced rotating assembly. Backed by over 60 years of racing piston expertise, JE Pistons continues to be the trusted choice for Chevy, Ford, Mopar, and Buick engine builders worldwide.

Products specifications

Block Height

9

Bore

4.035

Bore (in)

4.040 in.

Bore (mm)

102.616mm

CID

359

Comp Height

1.245

Comp Ratio @ 58CC

11.9:1

Comp Ratio @ 64cc

11.4:1

Comp Ratio @ 76CC

10.9:1

Compression Distance (in)

1.250 in.

Dome Volume

-6

Gram Weight

449

Notes

Specify left or right hand piston.

Oversize

0.035

Pin Diameter (in)

0.927 in.

Piston Head Volume (cc)

+6.00cc

Piston Material

Forged aluminum

Piston Ring Thickness

1/16 in. x 1/16 in. x 3/16 in.

Piston Style

Flat top, with two valve reliefs

Quantity

Sold individually.

Rod

6

Stroke

3.5

Wrist Pin Style

Press-fit or floating

Piston Avg Wt

449

Piston Pin Length

2.950

Second Compression Ring Thickness

0.064

Bore Diameter

4.040

Piston Material

2618

Industry

Automotive

Category Hierarchy

Pistons>Piston Kits

Piston Head Type

Flat

Piston Pin Material

5115

Product Market

Domestic

Out of Stock Message

Call for Availability

Piston Pin Outside Diameter

0.927

Piston Pin Wall Thickness

0.150

Ringset Included

No

Top Compression Ring Thickness

0.064

Compression Height

1.250

Piston Volume

-6

Engine

SMALL BLOCK CHEVROLET

Add-On

927-2950-15-51S

Add-On

J100F8-4040-5

Add-On

927-073-AS

Oil Ring Thickness

0.188

Make

Chevrolet

Cylinder Head

CHEVROLET 18 DEG

Forging Type

Round

Wrist Pin Outer Diameter

0.927

Prop 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Piston Quantity

8

easily directed to part I needed. Thank you.

Thanks, hope this will fix the problem..

It is easy to order the staff contacted me about my order status. The parts I ordered fit my vehicle as described and they were delivered on time. I will definitely be a customer again.

Cheapest priced ARP head studs on the internet. A++ I will definitely do more business with Autoplicity.

After receiving the ordered part, I realized that it was the wrong part altogether. I have submitted my request to return the item for a full refund but have not heard back from anyone. It's been 5 days since I sent my request.

Fantastic prices, lightning fast shipping, great service. Will looking forward to future purchases.

Found what I needed at an unbeatable price, easy purchase! No issues

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy