Description
Caterpillar 7X-7731 is a plated-steel 3/4-14 NPTF tapered pipe plug with a square drive, used to seal threaded fluid passages in many Caterpillar engines and equipment. CAT lists applications including 3406E, C15, C16, C18, C12, 3306, 3126, C7, 3176, 3208, 3408, and numerous industrial/generator applications.
IPD independently catalogs 7X7731 as a 3/4-14 NPTF plug, confirming the aftermarket application.
PAI’s corresponding plug EPP-3576 is published with:
- Thread: 3/4-14 NPT
- Length: approximately 0.62 in
- Drive: 1/2 in square
- Material: Steel
- Thread sealant: Pre-applied/sealed style Engine Parts Superstore
Crosses
7X7731, 7X-7731, EPP-3576, 3008469, S-995, M-3008469, M-S995, 23511573, 8923313, 49AX235


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