Caterpillar 169-7487 HNBR Oil Pan Drain Seal O-Ring – 3116, 3126 & C7

Replace a worn or damaged seal with this Caterpillar 169-7487 Seal-O-Ring. This precision O-ring is designed to provide a reliable seal in Caterpillar engine applications, including oil pan drain applications on select 3116, 3126, and C7 engines.

Manufactured from durable HNBR (Hydrogenated Nitrile Butadiene Rubber), this seal is designed to resist oil and withstand demanding engine operating conditions. The 169-7487 is a direct replacement for the original Caterpillar part number and is also cross-referenced to PAI 321478 and Interstate-McBee M-1697487.

Always verify fitment by engine serial number or application before ordering.

Part Number: 169-7487 / 1697487
Product Type: Seal-O-Ring / Oil Pan Drain Seal
Material: HNBR
Inside Diameter: 0.734 in. / 18.64 mm
Cross Section: 0.139 in. / 3.53 mm
AS568 Dash Size: -210
Common Applications: Select Caterpillar 3116, 3126, and C7 engines
Cross References: PAI 321478, Interstate-McBee M-1697487

Reliable sealing performance for heavy-duty Caterpillar engine repairs and maintenance.

The part is documented as a Caterpillar O-ring/seal, with published dimensions of 18.64 mm ID × 3.53 mm cross-section; aftermarket catalogs also identify it for Caterpillar oil pan drain applications.