JE PISTONS 398734 Piston Kit Compression 193564567437 4.080 4.500 11.5

( Brand: Je Pistons ), ( Manufacturer Part Number: 398734 ), ( Part Type: Piston Compression ), ( UPC: 193564567437 )

Review JE PISTONS Piston Kit 4.080 Inch Bore Fits 4.500 Stroke 11.5 Compression For fits 500

The Je Pistons 398734 piston kit is an essential upgrade for any diesel engine enthusiast looking to improve the performance and efficiency of their 4.0L Power Stroke engine. This piston kit is specifically designed for engines with a bore size of 4.080 inches and a stroke length of 4.500 inches, making it an ideal fit for numerous applications. With a compression height of 11.5 inches, these pistons provide an excellent compression ratio and improved combustion efficiency.

Each piston in this kit is meticulously crafted using forged aluminum alloy. This material ensures exceptional strength and durability, allowing the pistons to withstand the extreme pressures and temperatures encountered during engine operation. The piston skirts are designed to minimize friction and wear, while the crown shapes are optimized for efficient combustion and power output.

The piston rings included in this kit are designed to provide a perfect seal and prevent the loss of compression. The rings are made from a high-quality, heat-resistant material that ensures they maintain their sealing properties even under the most demanding conditions. The piston rings are also designed to minimize friction, ensuring the engine runs smoothly and efficiently.

The piston pins are made from chrome molybdenum steel, providing excellent strength and resistance to wear. The pins are also coated with a high-performance, anti-friction coating that ensures a smooth piston-pin interface and minimizes wear and tear.

This piston kit is engineered to provide superior performance and longevity, making it an excellent choice for high-performance applications, heavy-duty usage, or for those looking to maximize the potential of their 4.0L Power Stroke engine. By upgrading to these high-performance pistons, you can expect increased power output, improved fuel efficiency, and extended engine life.

The Je Pistons 398734 piston kit is backed by Je Pistons' industry-leading warranty, ensuring that you have peace of mind and confidence in your purchase. Whether you're a seasoned engine builder or a DIY enthusiast, this piston kit is an excellent investment in the performance and longevity of your 4.0L Power Stroke engine.

Pros and Cons of Buying Je Pistons 398734 Piston Kit for a 4.080 4.500 11.5 Compression Engine

The Je Pistons 398734 piston kit is designed for engines with a 4.080 bore and 4.500 stroke, and it offers an 11.5:1 compression ratio. This piston kit is suitable for various applications, including off-road racing, high-performance street use, and heavy-duty industrial engines. In this analysis, we will discuss the potential advantages and disadvantages of purchasing a Je Pistons 398734 piston kit.

1. High Compression Ratio: The primary advantage of the Je Pistons 398734 kit is the high compression ratio, which can lead to increased horsepower and torque. Higher compression ratios can enhance engine efficiency and provide better performance.

2. Durability: Je Pistons are known for their high-quality materials and manufacturing processes, ensuring that the pistons can handle the rigors of high-performance applications. The pistons are made from forged aluminum, making them stronger and more resilient than cast pistons.

3. Customizable: The Je Pistons 398734 kit is available with various ring sets to cater to different engine configurations and conditions, allowing users to tailor their piston kit to their specific engine needs.

4. Wide Application: The piston kit is suitable for various engine types, including both gasoline and diesel engines, making it a versatile option for various applications.

1. Cost: The Je Pistons 398734 kit is a premium option, and the cost may be prohibitive for some users. The high-quality materials and manufacturing processes contribute to the higher price point.

2. Installation Complexity: Installing the pistons requires specialized knowledge and tools, which may require the assistance of a professional mechanic or engine builder. Improper installation can lead to engine damage and decreased performance.

3. Break-In Period: After installation, the pistons will need to undergo a break-in period, during which the pistons and rings will adapt to the engine and sealing will be optimized. Proper break-in procedures must be followed to ensure optimal engine performance.

The Je Pistons 398734 piston kit offers several advantages, including high performance, durability, and versatility. However, the higher cost, installation complexity, and break-in period may deter some users. For those seeking maximum power and efficiency in their engine, the Je Pistons 398734 kit may be a worthwhile investment.

If you are considering purchasing the Je Pistons 398734 piston kit, it is essential to carefully evaluate your engine application and consider the potential benefits and drawbacks. Ensure that you have the necessary knowledge, tools, and resources to properly install the pistons and follow the recommended break-in procedures. If you are unsure about your ability to install the pistons or if you have any concerns, it may be best to consult a professional mechanic or engine builder to ensure optimal performance and longevity.

Details:

Whether upgrading an existing engine or assembling a new one, these JE Pistons are engineered to deliver durability, power, and smooth operation. Compatibility spans a variety of specific engine model's that match the dimensions and specifications provided, ensuring precise fit reliable performance. This kit includes two Pistons, premium ring packs, wrist pins, and wire locks, providing everything necessary for a comprehensive installation. The forged design enhances durability and resistance to the stresses encountered during aggressive driving or racing scenarios.

Offset pins are incorporated to minimize piston rock and operating noise, ensuring smoother engine operation. Each piston includes a skirt coating that reduces operating friction and wear, contributing to longer lifespan improved efficiency. The JE Pistons Piston Kit, part number 398734, is designed for high-performance engine builds requiring reliable durability and optimal performance. An innovative accumulator groove captures combustion gases below the top ring, promoting a more consistent and positive ring seal which enhances engine performance efficiency.

Trust JE Pistons for premium quality and proven results in your high-performance engine projects.Features:Forged 2618-T6 construction enhanced strength durability Skirt coating reduces friction wear longer piston life Offset pins minimize rock operating noise Skirt notches provide optimal clearance at bottom dead center Accumulator groove promotes positive ring seal improved performance Crafted from forged aluminum, these Pistons feature a that ensures better aligned grain flow higher tensile strength, making them suitable demanding applications.

part #: 398734 prices

• $376.30-$474.99

specifications pistondon:

• for models: 500
• brand: Je Pistons
• mpn: 398734
• part type: Piston Compression
• upc: 193564567437

offer pistondon:

• availability: In Stock
• options: Ship-to-home
• quantity: 7
• sold: 0
• started: January 16, 2026

shipping pistondon:

• transit: 4-7 Days
• type: Fixed
• class: Standard
• carrier: FedEx
• cost: $0.00
• service: FedEx Ground / FedEx Home Delivery

payments pistondon:

• credit card: Discover
• wallet: Google-pay
• other

returns pistondon:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

general pistondon:

• condition: New
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits

seller pistondon:

• rating: 99.6%
• # reviews: 31473
• city: Largo, Florida

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