JE PISTONS 361328 Set EJ257 99.75MM 8.5

( Brand: Je Pistons ), ( Manufacturer Part Number: 361328 ), ( Type: Piston ), ( Piston Diameter: 99.75mm ), ( Vintage Part: No ), ( Performance Part: Yes ), ( Country Of Origin: United States )

Review JE PISTONS 99.75mm 8.5 Set Used Needs Work

The **Je Pistons 361328 EJ257 (99.75mm / 8.5mm set)** represents a high-performance upgrade designed specifically for the Toyota EJ257 engine series, including models like the 2005 2012 Toyota 4Runner, Tacoma, and Tundra (pre-facelift), as well as the Lexus GX and Land Cruiser 200. Engineered to enhance power output, reliability, and longevity, this piston set delivers a precision-crafted solution for enthusiasts seeking to push their vehicle s limits while maintaining structural integrity. Crafted from **forged aluminum alloy**, these pistons are heat-treated to withstand extreme temperatures and mechanical stress, ensuring durability even under aggressive driving conditions or forced induction scenarios. The **99.75mm (3.92-inch) bore diameter** provides a slight oversize option, allowing for a more aggressive compression ratio or improved airflow when paired with a compatible cylinder head and camshaft setup. The **8.5mm ring groove height** strikes a balance between piston strength and oil control, reducing friction and minimizing wear on the cylinder walls while maintaining robust sealing performance. Each piston in this set is meticulously machined to exacting tolerances, featuring **dished or flat profiles** (depending on the specific application) to optimize combustion efficiency and reduce detonation risk. The **EJ257-specific design** accounts for the engine s unique geometry, ensuring proper ring end gaps, wrist pin clearance, and deck height alignment, which are critical for preventing catastrophic failure under high-load conditions. Whether used in a naturally aspirated build for increased horsepower or in a turbocharged setup for enhanced torque, these pistons offer a reliable foundation for serious modifications. Backed by Je s reputation for quality and performance, this piston set is an essential component for those aiming to transform their EJ257 into a high-revving, high-torque powerhouse while preserving the engine s longevity.

The **Je Pistons 361328 EJ257 (99.75mm x 8.5mm)** is a popular aftermarket piston set designed for the Toyota EJ257 engine, commonly found in the Land Cruiser 200, Hilux Surf, and other related models. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **High Compression Ratio Support**

The 99.75mm stroke allows for a higher compression ratio (often paired with a 10.5:1 or higher deck height), which can improve power output, especially when combined with a turbocharger or forced induction. This is beneficial for performance builds.

2. **Durability and Material Quality**

Je Pistons are known for using high-quality materials, including forged aluminum or billet steel components in some cases. The EJ257 pistons are designed to withstand higher stresses from forced induction, making them suitable for turbocharged applications.

3. **Compatibility with Stock and Modified Engines**

These pistons are designed to fit the EJ257 engine block without major modifications, though some clearance checks may be necessary if using a high-compression setup. They are also compatible with aftermarket crankshafts and rods if upgrading performance.

4. **Warranty and Support**

Je Pistons offers a warranty (typically 12 24 months) and good customer support, which can be reassuring for buyers. Their reputation in the aftermarket is generally positive, with many users reporting reliable performance.

5. **Performance Potential**

For naturally aspirated (NA) engines, these pistons can still provide a slight power increase due to improved combustion efficiency. However, their true value shines in turbocharged or supercharged applications, where they help prevent catastrophic failure under high loads.

6. **Wide Availability**

These pistons are widely stocked by performance parts retailers and online marketplaces, making them easy to purchase and install.

7. **Customization Options**

Je Pistons offers various piston-to-valve clearance (PVC) options and ring sets, allowing for fine-tuning based on engine modifications (e.g., porting, camshafts, or turbo upgrades).

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### **Cons**

1. **Cost**

The price of these pistons is significantly higher than OEM pistons, often ranging between **$200 $400 for a full set**, depending on the retailer and additional components (e.g., rings, pins, or oil control rings). This can be a substantial investment for a naturally aspirated build where gains may be modest.

2. **Requires Supporting Modifications**

- A higher compression deck (e.g., 10.5:1 or higher).

- A turbocharger or supercharger (for significant power gains).

- Upgraded rods (e.g., ARP or ISC rods) to handle increased stress.

- A stronger crankshaft (e.g., EJ257 forged crank or aftermarket option).

Without these supporting mods, the pistons may not provide meaningful benefits and could even be overkill for a stock or lightly modified engine.

3. **Installation Complexity**

Installing these pistons requires disassembling the engine, which is a labor-intensive process. Mistakes during assembly (e.g., incorrect torque specs, improper ring gap, or misaligned pins) can lead to premature failure. This may necessitate professional installation, adding to costs.

4. **Potential for Overbuilding**

If your engine is not heavily modified (e.g., stock or mildly tuned NA), the power gains from these pistons may be minimal. In such cases, the cost may not justify the performance increase, especially compared to simpler upgrades like a tune or intake.

5. **Ring and Oil Control Ring Considerations**

The included ring sets may not be optimized for every application. Some users opt for aftermarket rings (e.g., Fel-Pro or Sealed Power) for better performance or longevity, adding to the overall cost.

6. **Limited Lifespan in Extreme Conditions**

While durable, these pistons are not indestructible. In extreme conditions (e.g., high boost, aggressive driving, or lack of maintenance), they may wear out faster than expected. Proper oil selection, cooling, and maintenance are critical.

7. **Potential for Voids in Warranty**

If the engine is modified in ways not intended by the manufacturer (e.g., excessive boost without supporting mods), the warranty may be voided. Always check Je Pistons warranty terms before installation.

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### **Conclusion**

The **Je Pistons 361328 EJ257 (99.75mm x 8.5mm)** are a high-quality, performance-oriented piston set that excels in turbocharged or high-compression applications. They offer significant durability and potential power gains but come with a steep price tag and require supporting modifications to fully justify their cost. For naturally aspirated engines or lightly modified setups, the return on investment may be limited, and simpler upgrades could be more cost-effective.

- **Turbocharged EJ257 builds** (especially those targeting 500 hp).

- **High-compression NA builds** (e.g., 10.5:1 deck height with aggressive cams).

- **Engines with upgraded rods, cranks, and cooling systems**.

For stock or minimally modified engines, consider whether the cost aligns with your goals. If you re building a serious performance engine, these pistons are a strong choice, but they are not a "quick fix" for power gains.

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### **Recommendation**

- **Buy if:** You are planning a **turbocharged or high-compression NA build** for the EJ257 and can afford the supporting mods (crank, rods, cooling, etc.). Pair them with a reputable ring set (e.g., Fel-Pro) and ensure proper installation.

- **Avoid if:** Your engine is stock or lightly modified, and you re looking for a budget-friendly upgrade. In such cases, focus on simpler mods like a tune, intake, or exhaust before investing in pistons.

- For NA builds, **OEM pistons with a higher compression deck** may suffice if you re not pushing for extreme power.

- For turbo builds, explore **forged pistons** (e.g., Scat or JE) if you re targeting very high power levels (600 hp).

- Always consult with a mechanic or performance specialist to ensure compatibility with your specific build plan.

Details:

Comes with good wrist pins. Condition: Used heavily. Buyer pays shipping. Package Includes: 4x Pistons, Wrist Pins.

JE Pistons EJ257 99.75mm 8.5:1 Set Used NEEDS WORK 361328,: Details: bore, EJ257, Compression. 1 Piston has excess wear above the top compression ring and excessive wrist pin journal.

part #: 361328 prices

• $899.99-$1124.99

specifications pistonringro:

• brand: Je Pistons
• mpn: 361328
• type: Piston
• piston diameter: 99.75mm
• vintage part: No
• performance part: Yes
• country of origin: United States

offer pistonringro:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• best offers: True
• quantity: 1
• started: February 19, 2026

payments pistonringro:

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• wallet: Apple-pay
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shipping pistonringro:

• class: Standard
• type: Calculated
• carrier: USPS
• cost: $8.38
• service: USPS Ground Advantage
• transit: 4-9 Days

seller pistonringro:

• city: Des Moines, Iowa
• rating: 98.9%
• # reviews: 278

general pistonringro:

• Car Truck Parts Accessories > Engines Engine Parts > Pistons Rings
• condition: Used

returns pistonringro:

• policy: No Returns

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