Home/Cummins B-Series Parts — ISB, 6BT, 4BT & QSB/121258 Cummins RECTANGULAR SEALING RING (Pack of 5)
Cummins RECTANGULAR SEALING RING (Pack of 5)
Cummins · Models: 4B / 6B / ISB / QSB

121258 Cummins RECTANGULAR SEALING RING (Pack of 5)

Commercial diesel seals / o-rings. Match the listed part and engine identifiers before ordering.
2-Year WarrantyPAI Industries
$14.95
In stock — ships same day 2 available
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PAI Part #121258
JAK'S Part #JAKS-121258
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Kit Membership

Used In These Kits

This part is included in 17 engine & overhaul kits — find yours below.

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121258 Cummins RECTANGULAR SEALING RING (Pack of 5)
BrandPAI Industries
Engine MakeCummins
Engine Model4B · 6B · ISB · QSB

Sold in a pack of 5. Price shown is for 5 pieces.

RECTANGULAR SEALING RING

Fits:

  • CUMMINS 6B ENGINES 5.9
  • CUMMINS 4B ENGINES 3.9
  • CUMMINS ISB ENGINES
  • CUMMINS QSB SERIES ENGINE

OEM cross-references:

  • CUMMINS 3903297
  • CUMMINS 3906698
  • MACK 1577-3906698

Warranty: 24 months