MANLEY 42648-4 Piston Wrist Pin Wall 807298117003 22.5MMX2.250 9310

( Brand: Manley ), ( Manufacturer Part Number: 42648-4 ), ( Part Type: Wall Piston Pin ), ( Return Notes: New, Unused Condition W/original Packaging ), ( UPC: 807298117003 )

Review MANLEY Piston Wrist Pin 22.5mmx2.250 .250 Wall fits 250

The **Manley 42648-4 Piston Wrist Pin** is a precision-engineered, high-performance component designed to deliver exceptional durability and reliability in demanding engine applications. Crafted from **9310 aircraft-quality steel**, this wrist pin is forged to exacting standards, ensuring superior strength, fatigue resistance, and longevity ideal for high-stress environments such as racing, performance tuning, or heavy-duty automotive use. With a **22.5mm diameter** and a **2.250-inch (60mm) overall length**, this pin is engineered to fit a wide range of engines while maintaining optimal clearance and structural integrity. The **250-wall thickness** provides an ideal balance between flexibility and rigidity, reducing stress concentrations and minimizing wear on both the pin and the piston itself. This design minimizes friction and heat buildup, contributing to smoother operation and extended component life. The pin features a **smooth, polished finish** for reduced galling and corrosion resistance, while its **interference fit** design ensures secure retention within the piston, preventing lateral movement and maintaining alignment under high loads. Whether used in a street rod, drag racing engine, or high-performance turbocharged application, the Manley 42648-4 wrist pin is built to withstand extreme forces, delivering consistent performance and peace of mind for builders and enthusiasts who demand nothing less than the best.

### **Pros and Cons of buying a Manley 42648-4 Piston Wrist Pin (22.5mm x 2.250" x 250 Wall, 9310 Steel)**

1. **High-Quality Material (9310 Steel)** 9310 steel is a premium alloy known for its strength, durability, and resistance to wear and fatigue. This makes the wrist pin suitable for high-performance and heavy-duty applications, including turbocharged, forced-induction, or high-RPM engines.

2. **Precision Engineering** Manley is a well-respected manufacturer in the aftermarket performance parts industry. Their components are often machined to tight tolerances, ensuring proper fitment and reliability in critical engine applications.

3. **Thick Wall Construction (250 Wall)** A thicker wall (250mm) provides better structural integrity, reducing the risk of bending or failure under high stress. This is particularly beneficial in engines with aggressive camshafts, high compression, or forced induction.

4. **Standardized Dimensions (22.5mm x 2.250")** The pin s dimensions match common high-performance applications, making it a versatile replacement for stock or aftermarket pistons in engines like the LS, LT, or other popular crate engines.

5. **Compatibility with High-Performance Engines** The 9310 steel and robust construction make this pin suitable for engines running at elevated RPMs, high boost levels, or with aggressive tuning. It is often used in engines pushing 600 HP or 700 lb-ft of torque.

6. **Widely Available and Trusted Brand** Manley is a reputable brand with a strong reputation for reliability. Their parts are commonly stocked by performance shops and online retailers, ensuring ease of purchase and availability of replacements if needed.

7. **Potential for Long-Term Durability** When properly installed and maintained, a high-quality wrist pin like this one can last the life of the engine, reducing the need for frequent replacements.

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1. **Higher Cost Compared to Stock or Budget Pins** Premium materials like 9310 steel and thick-wall construction come at a higher price than standard wrist pins. This may not be cost-effective for low-power, stock, or lightly modified engines.

2. **Potential Overkill for Mild Applications** If the engine is not heavily stressed (e.g., naturally aspirated, low RPM, or low boost), a more affordable stock or mild-performance pin may suffice. Upgrading unnecessarily increases cost without significant benefit.

3. **Requires Proper Installation** Like all high-performance components, this wrist pin must be installed correctly to avoid issues such as improper clearance, binding, or premature wear. Incorrect installation (e.g., improper press-fit, misalignment, or lack of lubrication) can lead to failure.

4. **May Not Be Necessary for Stock or Mildly Modified Engines** Stock engines or those running at moderate power levels (e.g., 300-400 HP naturally aspirated) may not benefit enough from this upgrade to justify the expense. In such cases, a stock or budget pin may be sufficient.

5. **Limited Compatibility Without Verification** While the dimensions are standard, it s crucial to confirm that the pin fits the specific piston and engine design. Some aftermarket pistons may require custom pins or additional modifications (e.g., pin bushings, oil squirters).

6. **Potential for Over-Torquing or Damage During Installation** The thick wall and high-strength material mean the pin is less forgiving during installation. Over-torquing or improper tools could damage the pin or piston.

7. **Maintenance Requirements** High-performance pins may require more frequent inspection for wear or oil contamination. Neglecting maintenance could lead to premature failure, especially in engines with aggressive tuning.

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The **Manley 42648-4 piston wrist pin (22.5mm x 2.250" x 250 wall, 9310 steel)** is an excellent choice for **high-performance, forced-induction, or heavily modified engines** where durability, strength, and reliability are critical. Its premium construction makes it ideal for engines pushing significant power (500 HP or higher) or operating under extreme conditions. However, for **stock, mildly modified, or low-power engines**, the cost may not be justified, and a standard or budget pin would likely suffice.

- You are building or modifying an engine for **high performance (600 HP, forced induction, or aggressive tuning)**.

- Your engine requires a **thick-wall, high-strength pin** to handle stress (e.g., turbocharged, supercharged, or high-RPM applications).

- You are using **aftermarket pistons** that specify this pin for compatibility.

- You prioritize **long-term durability and reliability** over cost savings.

- Your engine is **stock or mildly modified** with low power output (e.g., 300-400 HP naturally aspirated).

- You are on a **tight budget** and can find a suitable alternative at a lower cost.

- You are unsure about **proper installation** or lack experience with high-performance engine components.

- Your engine design **does not require** the strength of 9310 steel (e.g., older or less demanding applications).

**Final Note:** Always verify compatibility with your specific piston and engine build before purchasing. Consult with a performance shop or engine builder if unsure to ensure the pin meets your application s needs. Proper installation and maintenance are key to maximizing its lifespan and performance.

Details:

Brand: Manley. Domestic Shipping: The shipping cost on this listing or the Free Shipping is for lower 48 States. Manley Piston Wrist Pin, WRIST PIN-22.5mmX2.250 WALL 9310. Manufacturer: Manley.

Items must be New, Unused, Not Installed, in the Original Packaging and able to resold. MPN: 42648-4. Condition: New.

part #: 426484 prices

• $194.76-$299.99

specifications pistonrinro:

• for models: 250
• brand: Manley
• mpn: 42648-4
• part type: Wall Piston Pin
• return notes: New, Unused Condition W/original Packaging
• upc: 807298117003

returns pistonrinro:

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

general pistonrinro:

• Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts
• condition: New

offer pistonrinro:

• sold: 0
• started: April 30, 2026
• options: Ship-to-home
• quantity: 1
• availability: In Stock

payments pistonrinro:

• other
• credit card: Visa
• wallet: Apple-pay

shipping pistonrinro:

• transit: 2-5 Days
• service: Expedited
• class: Expedited
• type: Fixed
• cost: $0.00

seller pistonrinro:

• # reviews: 177995
• city: Grant, Michigan
• rating: 99.4%

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