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PAI 431377 Valley Pan Gasket - Fits International / Navistar 6.9 / 7.3 / 444 Series Engines

431377 by PAI - Valley Pan Gasket - Fits International / Navistar 6.9 / 7.3 / 444 Series Engines
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MSRP: $191.89

$155.49

Save $36.40

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PAI 431377 Part Description

Manufacturer

PAI

Features & Benefits

  • Molded sealing beads promote strong contact across irregular block surfaces
  • Heat-resistant construction helps the gasket cope with sustained operating temperatures
  • Material composition resists degradation from extended exposure to engine oils
  • Consistent thickness assists even clamp loading across the entire valley area
  • Edge contours follow factory casting shapes to simplify positioning during assembly
  • Form stability aids long-term sealing after repeated thermal expansion cycles

PAI Valley Pan Gasket

The PAI Valley Pan Gasket helps service shops refresh International and Navistar 6.9, 7.3, and 444 series engines where top-end sealing is critical after cylinder head or intake work. It sits in the lifter valley area, forming a barrier that separates engine oil from coolant passages while the engine runs in heavy-use commercial duty. The gasket profile works with factory-style hardware, helping keep alignment steady as components are torqued back into place. Mechanics working on older fleets appreciate a valley pan gasket that fits specific engine families without guesswork or improvisation. The PAI 431377 gives rebuilders a sealing choice tailored to these well-known medium-duty diesel platforms.

PAI 431377 Specifications

Product Attributes

Notes Valley Pan Gasket | International 7.3/444 Truck Engines application
Fitment International / Navistar 6.9 / 7.3 / 444 Series Engines

PAI 431377 Part Interchanges

Brand Part Number
PAI 431377
Navistar 1805389, 1805389C1, 1805389C2, 1805389C3
Mack 4333-1805389C3

PAI 431377 Cross References

We have 2 alternatives for the 431377 by PAI:

PAI 431377 Manufacturer Information

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.
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