PAI part description

Product Description

Features & Benefits

  • Durable construction
  • Direct replacement for OE part 1398500
  • Caterpillar C16 Engine Application
  • High Performance product including a factory 2-Year Warranty
  • Quality You Can Trust - PAI has established themselves as the leading supplier of aftermarket heavy duty diesel parts, with quality standards that always meet or exceed OE standards

Product Attributes

Bore 5.49 IN
Bore 139.45 MM
Compression Ratio 16:1
Height 4.92 in
Height 124.97 MM
Notes High Performance Piston Crown Compression Ratio: 16.0 Caterpillar C16 application
Oversized No
Pin Bore 2.168 IN
Pin Bore 55.07 MM
Ring Grooves 3

Part Interchanges

Backed by 40 years of part manufacturing experience, PAI Industries® has been providing the heavy-duty truck industry with high-quality service parts for the engine, gearing, exhaust, suspension, and electrical systems. This brand has been manufacturing its products in the USA since 1973, and it owes its worldwide success to its dedicated and experienced employees. PAI takes pride in being an ISO 9001:2015-certified auto and truck parts manufacturer, operating in a 54,000 square feet facility that is equipped with state-of-the-art machinery. PAI’s technicians also perform 100% testing and inspection in its oil pump, water pumps, gear, synchronizer, and cylinder head to ensure durability and reliable performance.

PAI 311188HP Cross Reference

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