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(888) 312-8812 Login SignupThe 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.
| Notes | Valley Pan Gasket | International 7.3/444 Truck Engines application |
| Fitment | International / Navistar 6.9 / 7.3 / 444 Series Engines |
| Brand | Part Number |
|---|---|
| PAI | 431377 |
| Navistar | 1805389, 1805389C1, 1805389C2, 1805389C3 |
| Mack | 4333-1805389C3 |
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