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Manley 494230-8 Forged 2618 Aluminum Piston 3.582" Bore 18cc Dish

(1996-2004 Ford Mustang)

Manufacturer

Picture for manufacturer Manley

Part Number

494230-8
6 reviews
Sale Price

$735.26

Estimated ship date Thursday, November 26

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Product Details

The Manley 494230-8 is a precision-engineered forged piston machined from high-strength 2618 aluminum alloy, designed for high-performance engine builds requiring durability under extreme conditions. This piston features an 18cc spherical dish design with a 3.582" bore, making it ideal for applications demanding controlled compression ratios and reliable power delivery.

Key Specifications:

  • Bore diameter: 3.582 inches
  • Compression distance: 1.220 inches
  • Compatible with 5.933" rod length and 3.543" stroke
  • Compression ratios: 9.68:1 at 42cc chamber, 8.66:1 at 51cc, 8.56:1 at 52cc
  • Weight: 379 grams (467 grams with pin)
  • Ring package: 1.5mm, 1.5mm, 3mm Total Seal configuration

Advanced Manufacturing Features:

  • Forged from 2618 alloy providing maximum high-temperature strength and superior fatigue resistance
  • Contour forgings optimize strength-to-weight ratio without grain-interrupting internal milling
  • Single-fixturing manufacturing method ensures perfect ring groove to skirt squareness for maximum horsepower
  • Proprietary multi-step top ring groove machining delivers optimal size, geometry, flatness, and finish
  • Federal Form-Scan gauging validates precise skirt indexing and polarity
  • Moly-coated skirts reduce friction and improve wear characteristics
  • Offset wrist pin design minimizes piston rock for quieter operation and enhanced performance

Included Components:

  • Tool steel wrist pins for superior strength
  • Round wire locks for secure pin retention
  • Pressure balance groove machined into every piston

Important Note: Compression ratios are calculated based on 0.00" deck clearance, 9.240" deck height, and 0.042" thick compressed head gasket. Adjustments to these parameters will affect final compression ratio.

Manley pistons deliver the perfect combination of lightweight construction and robust durability, making them the choice of professional engine builders and performance enthusiasts who demand long service life without compromising power output.

Products specifications

Fits

1996-2004 Ford Mustang

Bore (in)

3.582 in.

Bore (mm)

90.983mm

Calculator

Compression Calculator

Compression Distance (in)

1.220 in.

Pin Diameter (in)

0.866 in.

Piston Head Volume (cc)

+18.00cc

Piston Material

Forged aluminum

Piston Ring Thickness

1.5mm x 1.5mm x 3.0mm

Piston Style

Dish, with no valve reliefs

Quantity

Sold as a set of 8.

Tool

Stroker Combinations

Wrist Pin Style

Press-fit or floating

Great price and good company to buy from!

Utilized customer support for question on particular item. Phone answered immediately, consultant answered questions and I was able to place order immediately. This second purchase was due to the initial experience. Will make future purchases from Autoplicity.

I ordered CV axles from Autoplicity and had them in less than a week! Definitely the best prices for quality product on this item. Will be a return customer for sure!

I was apprehensiveness at first to make a major purchase with Autoplicity due to their extremely low price and lack of reviews. I decided to take the chance and I am very glad I did. I made my order on a Monday morning at 0900 eastern time and my product arrived on Wednesday at 3pm. The item was exactly as described and the most astonishing part is that my purchase was released from the factory less than 45 days ago. I was expecting a model that had been sitting on a shelf for the last year and needed to be updated. That was not the case. I will definitely order from Autoplicity again in the future.

Very good price. Super quick delivery. Will def. buy from them again. Highley recomend them

Sweetest price on this K&N Filter anywhere! Shipped within 24hrs too. I'm coming back to shop for my car next.

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