Home/PAI Industries Parts/Caterpillar O-Ring, PAI 321391 (OEM 2355678), Pack of 10
O-RING
Caterpillar

Caterpillar O-Ring, PAI 321391 (OEM 2355678), Pack of 10

Commercial diesel seal & o-ring. Match the listed part and engine identifiers before ordering.
2-Year WarrantyPAI Industries
$16.60
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Fitment details

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PAI Part #321391
JAK'S Part #JAKS-321391
Catalog ref235-5678
Catalog ref2355678
Catalog ref4333-1836505C1
Catalog ref1836505
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Kit Membership

Used In These Kits

This part is included in 3 engine & overhaul kits — find yours below.

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Commonly sold with this product. These parts are sold separately.

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Caterpillar O-Ring, PAI 321391 (OEM 2355678), Pack of 10
BrandPAI Industries
Part CategorySeals & O-Rings
Sub-TypeO-Ring
Engine MakeCaterpillar
ConditionNew
Stage / TierStandard

Pack of 10.

PAI 321391 is an o-ring. PAI lists EPDM material. The listed durometer is 70. Listed cross section is 0.103 inch. Listed inside diameter is 0.237 inches. PAI describes this ring as peroxide cured. The manufacturer designates product-level OEM 2355678.

Manufacturer product cross-references
Caterpillar 235-5678
Caterpillar 2355678
Mack 4333-1836505C1
Navistar 1836505
Navistar 1836505C1

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

PAI Part #: 321391

OEM References:

  • CATERPILLAR 235-5678
  • CATERPILLAR 2355678
  • MACK 4333-1836505C1
  • NAVISTAR 1836505
  • NAVISTAR 1836505C1

Warranty: 2.0 year(s)