Caterpillar Silicone Air Intake O-Ring, PAI 321211 (OEM 4L8337), Pack of 6
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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| Brand | PAI Industries |
| Part Category | Seals & O-Rings |
| Sub-Type | O-Ring |
| Engine Make | Caterpillar |
| Engine Model | 3400 |
| Condition | New |
| Stage / Tier | Standard |
PAI 321211 is a silicone air intake o-ring for Caterpillar applications. PAI specifies Silicone construction. The manufacturer designates product-level OEM 4L8337. PAI cross-references Caterpillar 4L8337. PAI lists these application categories: Caterpillar 3400 Series. Confirm the complete required part number before ordering.
Pack of 6.
Manufacturer product cross-references
Caterpillar 3K3611
Caterpillar 4M5434
Caterpillar 2S4134
Caterpillar 6L8167
PAI Part #: 321211
OEM References:
- CATERPILLAR 4L8337
- CATERPILLAR 3K3611
- CATERPILLAR 4M5434
- CATERPILLAR 2S4134
- CATERPILLAR 6L8167
Applications:
- CATERPILLAR 3400 SERIES
Warranty: 2.0 year(s)
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 |
|---|
| 4L8337 |
| 3K3611 |
| 4M5434 |
| 2S4134 |
| 6L8167 |
| CATERPILLAR 4L8337 |
| CATERPILLAR 3K3611 |
| CATERPILLAR 4M5434 |
| CATERPILLAR 2S4134 |
| CATERPILLAR 6L8167 |
| PAI 321211 |
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.