Home/Caterpillar C7 & C9 Parts/Caterpillar Buna N O-Ring, PAI 321261 (OEM 2M4453), Pack of 10
O-RING
Caterpillar · Models: 3100 / C7

Caterpillar Buna N O-Ring, PAI 321261 (OEM 2M4453), Pack of 10

Commercial diesel seal & o-ring. Match the listed part and engine identifiers before ordering.
2-Year WarrantyPAI Industries
$29.90
In stock — confirm dispatch timing 2 available
Fitment details

Want us to check the fit? Share any details you have below. All fields are optional. Your request will be included with your order, and a specialist may contact you before fulfillment.

Secure Checkout Review Return Policy Warranty Details Ask About Same-Day Shipping
PAI Part #321261
JAK'S Part #JAKS-321261
Catalog ref01-1276
Catalog ref011276
Catalog ref2M4453
Catalog ref62-6708
Not sure it's the right fit? Call a specialist
(720) 445-6249
Talk to a tech or text a photo of your part tag — we'll confirm fitment before you buy
Kit Membership

Used In These Kits

This part is included in 10 engine & overhaul kits — find yours below.

Complete The Rebuild

Suggested Additional Parts

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

  1. Cummins ISX O-Ring
    121298Cummins ISX O-Ring In stock
    $29.90View ›
  2. Coated EPDM Rectangular Ring, PAI (OEM 3682826), Pack of 2
    121393Coated EPDM Rectangular Ring, PAI (OEM 3682826), Pack of 2 In stock
    $4.56View ›
  3. Caterpillar Buna N O-Ring, PAI (OEM 7F8267), Pack of 5
    321252Caterpillar Buna N O-Ring, PAI (OEM 7F8267), Pack of 5 In stock
    $10.40View ›
  4. HOUSING THERMOSTAT GASKET (Pack of 5)
    131676HOUSING THERMOSTAT GASKET (Pack of 5) In stock
    $64.30View ›
  5. Caterpillar Viton O-Ring, PAI (OEM 6J2245), Pack of 10
    321249Caterpillar Viton O-Ring, PAI (OEM 6J2245), Pack of 10 In stock
    $31.80View ›
Caterpillar Buna N O-Ring, PAI 321261 (OEM 2M4453), Pack of 10
BrandPAI Industries
Part CategorySeals & O-Rings
Sub-TypeO-Ring
Engine MakeCaterpillar
Engine Model3100 · C7
ConditionNew
Stage / TierStandard

PAI 321261 is a buna n o-ring for Caterpillar applications. PAI specifies Buna N construction. The manufacturer designates product-level OEM 2M4453. PAI cross-references Caterpillar 2M4453. PAI lists these application categories: Caterpillar 3100 Series, Caterpillar C7 Engine. Confirm the complete required part number before ordering.

Pack of 10.

Manufacturer product cross-references
Caterpillar 01-1276
Caterpillar 011276
Caterpillar 62-6708
Caterpillar 626708
Caterpillar 78-1935
Caterpillar 781935

PAI Part #: 321261

OEM References:

  • CATERPILLAR 01-1276
  • CATERPILLAR 011276
  • CATERPILLAR 2M4453
  • CATERPILLAR 62-6708
  • CATERPILLAR 626708
  • CATERPILLAR 78-1935
  • CATERPILLAR 781935

Applications:

  • CATERPILLAR 3100 SERIES
  • CATERPILLAR C7 ENGINE

Warranty: 2.0 year(s)