Home/Caterpillar 3406E Parts/Caterpillar O-Ring, PAI 321288 (OEM 618639), Pack of 6
O-RING
Caterpillar · Models: 3406E / C15 / C16 / C18

Caterpillar O-Ring, PAI 321288 (OEM 618639), Pack of 6

Commercial diesel seal & o-ring. Match the listed part and engine identifiers before ordering.
2-Year WarrantyPAI Industries
$8.22
In stock — confirm dispatch timing 3 available
Fitment details

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PAI Part #321288
JAK'S Part #JAKS-321288
Catalog ref061-8639
Catalog ref0618639
Catalog ref61-8639
Catalog ref4928599
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Kit Membership

Used In These Kits

This part is included in 2 engine & overhaul kits — find yours below.

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Caterpillar O-Ring, PAI 321288 (OEM 618639), Pack of 6
BrandPAI Industries
Part CategorySeals & O-Rings
Sub-TypeO-Ring
Engine MakeCaterpillar
Engine Model3406E · C15 · C16 · C18
ConditionNew
Stage / TierStandard

Pack of 6.

PAI 321288 is an o-ring. PAI lists Viton material. The listed durometer is 75. Listed cross section is 0.103 inch. Listed inside diameter is 0.612 inches. The manufacturer designates product-level OEM 618639.

Compatible Engines

PAI lists Caterpillar 3406E Series; Caterpillar C15 Engine; Caterpillar C16 Engines; Caterpillar C18 Engine. Match the complete required part number and listed application before ordering.

Manufacturer product cross-references
Caterpillar 061-8639
Caterpillar 0618639
Caterpillar 61-8639
Cummins 4928599
Mack 4333-1887474C1
Navistar 1887474
Navistar 1887474C1

Compare the complete part number, material and required seal specification before ordering.

PAI Part #: 321288

OEM References:

  • CATERPILLAR 061-8639
  • CATERPILLAR 0618639
  • CATERPILLAR 61-8639
  • CUMMINS 4928599
  • MACK 4333-1887474C1
  • NAVISTAR 1887474
  • NAVISTAR 1887474C1

Applications:

  • CATERPILLAR 3406E SERIES
  • CATERPILLAR C15 ENGINE
  • CATERPILLAR C16 ENGINES
  • CATERPILLAR C18 ENGINE

Warranty: 2.0 year(s)