040090 WELCH PLUG (Pack of 5)
Used In These Kits
This part is included in 3 engine & overhaul kits — find yours below.
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040095Cummins Block Plug Kit In stock -
040096Cummins 6B 5.9 Block Plug Kit In stock -
040107Cummins ISB Plug Kit In stock - No kits match that search.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
| Brand | PAI Industries |
Sold in a pack of 5. Price shown is for 5 pieces.
WELCH PLUG
OEM cross-references:
- CUMMINS 3900687
Warranty: 24 months
These catalog references may identify this part or components in an assembly. A listed number alone does not confirm whole-assembly interchange or vehicle fitment. Confirm the required part before ordering.
| Number |
|---|
| CUMMINS 3900687 |
| PAI 040090 |
No cross-reference numbers match that search.
Most PAI parts carry a 2-year unlimited-mileage PAI warranty — 3 years on the High Performance tier, 1 year on Excel by PAI. See Warranty & Returns for full coverage terms, or call a specialist to confirm the exact coverage on this part.
PAI published warranty tiers: High Performance — 3-Year · Genuine PAI — 2-Year · Excel — 1-Year, unlimited mileage. The badge beside the price shows this product's recorded term; when no badge is shown, confirm coverage with a specialist.








