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Harbor Freight Predator 301cc Standard Piston
180F-PST300 Harbor Freight Predator 301cc Standard Piston
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Harbor Freight Predator 301cc Standard Piston

Part Number: 180F-PST300K
Online Price: $19.99
Standard Piston for Predator 301cc Harbor Freight Engine (180F)
Availability: In Stock.

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Description

180F-PST300 Standard Piston for Predator 301cc Harbor Freight Engines


This standard replacement piston is designed specifically for the Predator 301cc (180F) engine, commonly found in Harbor Freight models. Since the Predator 301cc engine comes in multiple versions with varying piston designs, it’s essential to verify your piston’s exact dimensions before ordering to ensure a perfect fit.


Piston Specifications:

  • Piston Diameter: 3.147" (80mm)
  • Piston Pin Journal: 0.590" (15mm)
  • Compression / Pin Height: 0.980" (24.9mm)


This piston is ideal for engine rebuilds, repairs, or performance restoration on compatible Predator 301cc models. Using the correct piston ensures reliable compression, smooth operation, and long engine life.


Wrist pin, Clips and Rings are sold separately 

FAQ

Q1: What engines is this piston compatible with?

A: This piston fits Predator 301cc Harbor Freight engines, model 180F, but since there are multiple piston versions, always verify your piston’s measurements before ordering.


Q2: What are the exact piston specifications?

A:

  • Piston Diameter: 3.147" (80mm)
  • Piston Pin Journal: 0.590" (15mm)
  • Compression / Pin Height: 0.980" (24.9mm)


Q3: How do I check if this piston fits my engine?

A: Measure your current piston’s diameter, pin journal, and pin height and compare them with the specs above. This ensures you order the correct replacement.


Q4: Is this piston suitable for performance upgrades?

A: This is a standard OEM-sized piston, ideal for repairs or rebuilds restoring stock performance. For performance upgrades, consider pistons with different compression or materials.


Q5: Can I install this piston myself?

A: If you have basic mechanical skills and tools for engine rebuilds, yes. Otherwise, professional installation is recommended to ensure proper fit and engine function.

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