JE PISTONS 400178 Piston Kit 193564569370 4.075 4.625 12.0

( Brand: Je Pistons ), ( Manufacturer Part Number: 400178 ), ( Part Type: Piston ), ( UPC: 193564569370 )

Review JE PISTONS Piston Kit For 4.075 Inch Bore 4.625 Stroke 12.0 fits CR

The Je Pistons 400178 piston kit is an ideal solution for those seeking high-performance pistons for their engines with a bore size ranging from 4.075 inches to 4.625 inches and a stroke of 12.0 inches, suitable for various applications with a crankshaft displacement of around 4.6 liters. This piston kit is designed specifically for Jeep engines, ensuring a perfect fit and optimal engine performance.

Each piston in this kit is meticulously crafted using forged 2618-T6 aluminum alloy, which offers superior strength and durability compared to cast pistons. The piston design features a dished top, optimized piston skirt design, and a secondaries piston ring groove for enhanced combustion efficiency and power output.

The piston rings in this kit are made of high-quality, heat-resistant materials that ensure excellent sealing, even under the most demanding conditions. The piston rings include a compression ring, an oil control ring, and a top ring, all designed to provide optimal sealing and engine performance.

The piston kit also includes piston pins made of high-strength, chrome-molybdenum steel, ensuring a secure connection between the piston and the connecting rod. The piston pins are also shot-peened for added strength and durability.

This Je Pistons 400178 piston kit comes with piston clips to ensure proper piston-to-pin fitment and is engineered to meet or exceed OEM specifications for fit, form, and function. The pistons are also designed to provide excellent thermal characteristics and are able to handle high cylinder pressures, making them an excellent choice for performance-oriented applications.

In summary, the Je Pistons 400178 piston kit is an excellent choice for those seeking high-performance pistons for their 4.075-4.625 inch bore size, 12.0 inch stroke, and 4.6 liter crankshaft displacement Jeep engines. With their superior strength, durability, and performance capabilities, these pistons are sure to provide exceptional engine performance and longevity.

The Je pistons 400178 piston kit is designed for engines with a bore size between 4.075 inches and 4.625 inches and a stroke of 12.0 inches, commonly found in certain Caterpillar C15 and C16 engines. Let's evaluate the potential pros and cons of investing in this piston kit.

1. High-quality materials: The pistons in this kit are made of forged aluminum alloy, ensuring durability and strength.

2. Enhanced performance: These pistons can provide better compression ratio and improved power output, leading to increased engine performance.

3. Improved reliability: The forged pistons can handle high compression and extreme temperatures, reducing the likelihood of engine failure.

4. Affordability: Compared to other aftermarket options, the Je pistons 400178 piston kit is relatively affordable.

1. Installation complexity: Installing new pistons can be a labor-intensive process that requires specialized tools and skills.

2. Potential for engine damage: If not installed correctly, the new pistons could cause damage to the engine or other components.

3. Compatibility concerns: Ensure that the pistons are compatible with your specific engine model and configuration.

4. Possible need for additional components: Depending on your engine's condition, you might need to replace other components, such as the rings or bearings, alongside the pistons.

Considering the pros and cons, investing in the Je pistons 400178 piston kit can lead to improved engine performance, reliability, and durability. However, the installation process can be complex and time-consuming, and incorrect installation could potentially cause damage to the engine. To minimize risks and ensure optimal results, consult a professional mechanic or engine specialist for guidance on the installation process and any necessary additional parts.

If you're confident in your mechanical skills and the compatibility of the pistons with your engine, the Je pistons 400178 piston kit can be a cost-effective solution for enhancing your engine's performance and reliability. However, if you're uncertain about the installation process or the compatibility of the pistons, it's recommended to consult a professional mechanic or engine specialist for advice and assistance.

Details:

Accumulator groove enhances ring seal for consistent performance. Designed for 4.075 inch bore and 4.625 stroke engines. The forged construction enhances durability and helps withstand the stresses of high-power builds. An accumulator groove is machined into the piston to tap combustion gases below top ring, promoting a more consistent and positive ring seal for enhanced performance efficiency.

Features: 2618-T6 forged construction for improved strength and durability. JE Pistons Piston Kit for 4.075 Inch Bore, 4.625 Stroke, 12.0:1 CR: The Part Number: 400178 is designed high-performance engines requiring durable and reliable components. Skirt notches facilitate optimal clearance at bottom dead center. Includes two Pistons, premium ring packs, wrist pins, and wire locks.

Crafted from 2618-T6 forged aluminum, these Pistons offer superior grain flow alignment and increased tensile strength, ensuring long-lasting performance even under demanding conditions. Skirt coating reduces friction and wear during operation. No other parts are included or can be substituted, selected, changed. Made in the USA for quality assurance.

Offset pins are incorporated to decrease piston rock and reduce operating noise, contributing quieter engine function. Each piston features a skirt coating to reduce operating friction and minimize wear, promoting smoother operation extended component life. Made in the USA, JE Pistons Piston Kit ensures quality construction and reliable performance for your engine rebuild or high-performance application. Actual product may vary from picture.

Offset pins minimize piston rock and operating noise. Some items pictured may not be included.

part #: 400178 prices

• $624.99-$656.99

specifications pistondon:

• for models: Cr
• brand: Je Pistons
• mpn: 400178
• part type: Piston
• upc: 193564569370

general pistondon:

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

offer pistondon:

• quantity: 9
• availability: In Stock
• started: March 8, 2026
• options: Ship-to-home
• sold: 0

shipping pistondon:

• type: Fixed
• transit: 3-6 Days
• cost: $10.99
• class: Standard
• service: Standard

returns pistondon:

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

payments pistondon:

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

seller pistondon:

• city: Danville, Virginia
• # reviews: 47267
• rating: 99.8%

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