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JE Pistons 257943 Forged Piston Set Bore Inverted Dome - 4.530 8-Cylinder

Part of: JE Pistons Forged Piston Set Bore Inverted Dome

Other options in this family: JE Pistons 170818 JE Pistons 279930 JE Pistons 194888 JE Pistons 297116 JE Pistons 279932

Manufacturer

Picture for manufacturer JE Pistons

Part Number

257943
4 reviews
Sale Price

$1,076.99

2 left at this price

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Usually delivered within 2 days

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Product Details

The JE Pistons 257943 is a premium forged racing piston set designed for high-performance V8 engine builds. Manufactured from 2618 aluminum alloy for exceptional strength and heat resistance, these pistons feature an inverted dome/dish design with a 4.530-inch bore diameter, 1.270-inch compression distance, and 0.990-inch pin diameter. Each set includes 8 precisely matched pistons with oil rail support included.

Key Features:

  • 2618 forged aluminum construction for maximum durability under extreme conditions
  • Application-specific forgings ensure optimized, uniform crown thickness
  • Contact reduction groove minimizes frictional drag for improved efficiency
  • Accumulator groove increases top ring stability and sealing
  • CNC-machined side relief with lower support band for additional skirt strength
  • Honed pin bores with double pressure-fed pin oilers for superior lubrication
  • Wire locks included for secure pin retention

JE Pistons are sold as precision-matched sets to ensure balanced performance. This set requires ring set J100F8-4530-5 (sold separately). Backed by over 60 years of racing piston engineering expertise, JE Pistons delivers professional-grade quality for serious engine builders and racers.

Products specifications

Block Height

9.78

Bore (in)

4.530 in.

Bore (mm)

115.062mm

CID

548

Comp Height

1.27

Comp Ratio @ 110cc

8.9:1

Comp Ratio @ 118cc

8.5:1

Comp Ratio @ 124cc

8.2:1

Compression Distance (in)

1.270 in.

Dome Volume

-20

Gram Weight

611

Notes

Oil rail support included.

Oversize

0.055

Pin Diameter (in)

0.990 in.

Piston Head Volume (cc)

+20.00cc

Piston Material

Forged aluminum

Piston Ring Thickness

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

Piston Style

Dish, with single valve relief

Quantity

Sold individually.

Rod

6.385

Stroke

4.25

Wrist Pin Style

Press-fit or floating

Piston Avg Wt

580

Piston Pin Outside Diameter

0.990

Make

Chevrolet

Piston Volume

-20

Forging Type

Round

Add-On

990-2930-18-51S

Compression Height

1.270

Industry

Automotive

Cylinder Head

OPEN CHAMBER

Oil Ring Thickness

0.218

Piston Pin Length

2.930

Piston Pin Wall Thickness

0.180

Out of Stock Message

Call for Availability

Engine

BIG BLOCK CHEVY

Product Market

Domestic

Bore Diameter

4.530

Add-On

990-042-CS

Piston Pin Material

5115

Ringset Included

No

Second Compression Ring Thickness

0.064

Piston Material

2618

Add-On

J100F8-4530-5

Top Compression Ring Thickness

0.064

Category Hierarchy

Pistons>Piston Kits

Piston Head Type

Dish

Prop 65

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

Piston Quantity

8

Autoplicity did a good job getting my order to me fast. Product looks like it is in good condition.

Lowest price and S&H around! Prompt responses! Will def buy from again!

I looked around for few months on where to go to purchase JBA headers for my 01 Tundra. I came across Autoplicity and their prices were untouchable. I even called to speak with a sales representative and he gave me a discount code for my purchase. I would highly recommend doing business and plan on doing more business with them.

Best price I could find on line, shipped really fast. With how low the price is I was worried but everything came fast and it was the correct parts. This place really keeps the cost of racing down.

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