Skip To Content

Specifications

The AFA Industries 1090077 Oil Cooler O‑Ring Seal is crafted to meet or exceed OEM precision standards for high‑duty Caterpillar engines. This 3.975″ diameter seal is suitable for oil cooler mounting assemblies on engines like Cat 3406E, 3408, and 3412, and is commonly used on C15, C16, and C18 series engines. Made from high‑resistance HNBR with PTFE coating, it resists oil, coolant, diesel fuel, ozone, greases, and refrigerants while operating in temperature ranges typical of engine oil systems. Lightweight (about 0.02 lb) and easy to install, it ensures a trustworthy, leak-free seal critical to maintaining optimal oil cooler efficiency and engine longevity in heavy equipment and truck fleets.
Weight
0.02

Compatibility

Freightliner (with Cat 3406/3406E/C15 engines)
Kenworth heavy-duty models (Cat-powered, mid‑1990s to 2010s)
Peterbilt heavy-duty trucks with Cat C15/C16 engines
Western Star trucks with Cat 3408/3412 engines

Alternative Part Numbers

Caterpillar 109‑0077
Interstate‑McBee M‑109‑0077
IPD 4F7387
PAI 321278

Related Parts

This website uses cookies to provide users the best possible experience. Learn more. Please also review our terms of use and terms of sale.