MOPAR 748359 Forged Pistons Rings

( Manufacturer Part Number: 748359 ), ( Type: Piston ), ( Items Included: Piston Rings ), ( Piston Diameter: 4.377 )

Review MOPAR Forged Pistons Only Rings fits HEMI

The **Mopar 748359 Hemi Forged Pistons with Rings** represent a premium, high-performance upgrade designed specifically for Chrysler s legendary 392 and 426 Hemi V8 engines, delivering unmatched durability, reliability, and power potential. Crafted from **high-strength forged aluminum alloy**, these pistons are engineered to withstand extreme heat, high compression ratios, and the brutal stresses of forced induction or high-performance applications without compromising structural integrity. The **forged construction** ensures superior resistance to warping, cracking, or deformation under heavy loads, making them an ideal choice for enthusiasts pushing their Hemi engines to their limits whether in street rod builds, drag racing, or high-RPM applications. Each piston is meticulously machined to exacting tolerances, featuring **optimized dome shapes** for improved combustion efficiency and reduced detonation risk, while the **hollow crown design** enhances heat dissipation for better thermal management. The accompanying **compression rings** are precision-ground from high-quality cast iron, featuring **chromium plating** on the top ring for superior wear resistance and oil control, ensuring long-lasting sealing performance even under the most demanding conditions. Whether you're restoring a classic Hemi, building a modern high-performance engine, or preparing for a track-day session, these pistons and rings provide the foundation for a robust, high-revving powerplant that delivers both reliability and exhilarating performance. Backed by Mopar s reputation for quality and compatibility, this kit is a trusted choice for those who demand nothing less than the best in Hemi engine components.

### Pros and Cons of Buying Mopar 748359 Hemi Forged Pistons with Rings

1. **High Performance and Durability** Forged pistons are significantly stronger and more resistant to stress than cast pistons, making them ideal for high-performance applications, forced induction, or heavy-duty use. The Hemi engine, known for its power and reliability, benefits greatly from forged components.

2. **Better Heat Dissipation** Forged pistons have superior heat conductivity, which helps prevent warping and extends engine life, especially under extreme conditions like turbocharging or supercharging.

3. **Longer Engine Life** The increased strength and resistance to wear mean these pistons can withstand higher RPMs, boost levels, and aggressive driving styles without failing prematurely.

4. **Precision Machining** Mopar (Chrysler) forged pistons are designed to exact specifications, ensuring proper fitment, ring seal, and compression efficiency in the 748359 Hemi engine.

5. **Compatibility with Aftermarket Mods** If you plan to modify your engine (e.g., forced induction, nitrous, or high-lift cams), forged pistons are a safer choice than cast pistons, which are more prone to failure under stress.

6. **Warranty and Support** Mopar (as part of Chrysler) offers warranties and customer support, providing peace of mind in case of manufacturing defects or fitment issues.

7. **Proven Reliability in Racing and Street Applications** Forged pistons are a staple in both professional racing and high-performance street builds, indicating their trustworthiness in demanding environments.

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1. **Higher Upfront Cost** Forged pistons are significantly more expensive than cast pistons. The 748359 Hemi kit includes not only the forged pistons but also high-quality rings, which adds to the cost compared to aftermarket or lower-end OEM replacements.

2. **Installation Complexity** Forged pistons require careful installation, including proper ring gap sizing, piston-to-wall clearance, and torque specifications. Improper installation can lead to premature wear or failure.

3. **Weight Consideration** While forged pistons are stronger, they are also heavier than cast pistons. In high-RPM applications (e.g., drag racing or extreme street builds), the added weight can slightly reduce engine responsiveness.

4. **Potential Overkill for Mild Builds** If your engine is not heavily modified (e.g., stock or lightly tuned), forged pistons may be unnecessary, making them a less cost-effective choice for basic maintenance or mild upgrades.

5. **Compatibility with Older or Modified Engines** If your Hemi engine has been heavily modified (e.g., oversized crankshaft, aggressive camshaft, or extreme displacement), you may need custom pistons rather than the stock 748359 kit, adding further cost.

6. **Limited Availability of Aftermarket Alternatives** While Mopar forged pistons are high-quality, some enthusiasts prefer aftermarket brands (e.g., JE, Scat, or ARP) for specific tuning applications, which may require additional research.

7. **Potential for Misuse** If the engine is not properly supported with complementary parts (e.g., connecting rods, crankshaft, or lubrication system), even forged pistons may not perform optimally or could fail under extreme stress.

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The **Mopar 748359 Hemi forged piston kit** is one of the best choices for owners of high-performance or heavily modified Hemi engines. Its superior strength, durability, and compatibility with aggressive modifications make it a worthwhile investment for those pushing their engines to their limits. However, for stock or mildly tuned engines, the cost may not justify the upgrade.

If you are planning significant modifications (turbocharging, nitrous, or high-RPM applications), the forged pistons will significantly enhance reliability and longevity. For less demanding applications, a cost-effective alternative (such as high-quality aftermarket cast pistons or a remanufactured OEM kit) might suffice.

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- You are running a **forced induction setup** (turbo or supercharger).

- You plan to **run nitrous oxide** or aggressive camshafts.

- Your engine sees **high RPMs or extreme power levels** (e.g., drag racing, street rods, or professional tuning).

- You want **maximum reliability** for a heavily modified Hemi.

- Your engine is **stock or mildly tuned** (a cast piston kit may be sufficient).

- You are on a **tight budget** (aftermarket forged pistons from brands like JE or Scat may offer similar performance at a lower cost).

- You need **custom pistons** for an oversized or heavily modified engine (consult a professional tuner).

For most **serious Hemi enthusiasts** pushing their engines beyond stock limits, the **Mopar 748359 forged piston kit is the safest and most reliable choice**. However, always ensure that the rest of your engine (connecting rods, crankshaft, oil system, etc.) is properly supported to maximize performance and longevity.

Details:

527 CUBIC INCHES. CUSTOM# 748359. 7 PISTONS ONLY. BORE SIZE 4.377.

part #: 748359 price

• $249.00

specifications pistonringro:

• for models: Hemi
• for makes: Mopar
• mpn: 748359
• type: Piston
• items included: Piston Rings
• piston diameter: 4.377

offer pistonringro:

• options: Ship-to-home
• quantity: 1
• started: March 16, 2026
• availability: In Stock
• sold: 0

payments pistonringro:

• money order
• credit card: Visa
• wallet: Paypal
• other

seller pistonringro:

• rating: 100.0%
• city: Cedar Rapids, Iowa
• # reviews: 4142

general pistonringro:

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

shipping pistonringro:

• carrier: UPS
• service: UPS Ground Saver
• type: Calculated
• transit: 3-7 Days
• cost: $0.00
• class: Economy

returns pistonringro:

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

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