Caterpillar 3126B Fuel Injector O-Ring Kit, PAI 321336 (OEM 2421539), Pack of 1
What’s In This Kit
Browse 6 included components with current product details and availability.
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421217Teflon Coated Viton O-Ring, PAI (OEM 1814695C1), Pack of 10 In stock -
321344Caterpillar Rectangular Sealing Ring, PAI (OEM 1504105), Pack of 6 In stock -
321335Caterpillar O-Ring, PAI (OEM 2373800), Pack of 6 In stock -
321334Caterpillar O-Ring, PAI (OEM 1482903), Pack of 6 In stock -
321345Caterpillar Plastic Sealing Ring, PAI (OEM 1495240), Pack of 6 In stock -
442061International / Navistar INJECTOR BACKUP RING (Pack of 10) In stock - No included components match that search.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
| Brand | PAI Industries |
| Part Category | Seals & O-Rings |
| Sub-Type | O-Ring |
| Engine Make | Caterpillar |
| Engine Model | 3100 · C7 · 3126 |
| Condition | New |
| Stage / Tier | Standard |
Pack of 1.
PAI 321336 is a fuel injector o-ring kit. Manufacturer application: Caterpillar 3126B. Manufacturer parent cross-references: CATERPILLAR 1966934; CATERPILLAR 2245358; CATERPILLAR 242-1539; CATERPILLAR 2421539.
Manufacturer application table: CATERPILLAR 3100 SERIES; CATERPILLAR C7 ENGINE; CATERPILLAR 3126 SERIES.
Manufacturer-listed top-level components: 1 x PAI 421217 o-ring; 1 x PAI 321344 rectangular sealing ring; 1 x PAI 321335 o-ring; 1 x PAI 321334 o-ring; 1 x PAI 321345 plastic sealing ring; 1 x PAI 442061 injector backup ring. These component quantities do not change the Pack of 1 kit.
Compare the complete kit number, configuration and manufacturer-listed contents with the required parts before ordering.
Fits:
- CATERPILLAR 3100 SERIES
- CATERPILLAR C7 ENGINE
- CATERPILLAR 3126 SERIES
OEM cross-references:
- 421217 1814695C1
- 321344 1504105
- 321335 2373800
- 321334 1482903
- 321345 1495240
- 442061 1817073C2
- CATERPILLAR 1966934
- CATERPILLAR 2245358
- CATERPILLAR 242-1539
- PAI 321336
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 |
|---|
| 421217 1814695C1 |
| 321344 1504105 |
| 321335 2373800 |
| 321334 1482903 |
| 321345 1495240 |
| 442061 1817073C2 |
| CATERPILLAR 1966934 |
| CATERPILLAR 2245358 |
| CATERPILLAR 242-1539 |
| PAI 321336 |
No cross-reference numbers match that search.
Discovery models are listed below. Confirm the complete application and any ESN/CPL or size restrictions before ordering.
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.