Caterpillar O-Ring, PAI 321329 (OEM 5P7816), Pack of 10
Used In These Kits
This part is included in 3 engine & overhaul kits — find yours below.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
-
321482Cat C15 Oil Cooler O-Ring, PAI (OEM 167-4407), Pack of 5 In stock -
121282Viton O-Ring, PAI (OEM 3330159), Pack of 10 In stock -
121308HNBR O-Ring, PAI (OEM 3678756), Pack of 5 In stock -
331415Caterpillar 3406E/C15/C16/C18 Compressor Seal, PAI (OEM 1100004), Pack of 1 In stock -
321301Caterpillar O-Ring, PAI (OEM 6V3908), Pack of 5 In stock
| Brand | PAI Industries |
| Part Category | Seals & O-Rings |
| Sub-Type | O-Ring |
| Engine Make | Caterpillar |
| Engine Model | 3406E · C15 · C16 · C18 |
| Condition | New |
| Stage / Tier | Standard |
Pack of 10.
PAI 321329 is an o-ring. PAI lists Viton material. The listed durometer is 75. Listed cross section is 0.118 inch. Listed inside diameter is 1.720 inches. The manufacturer designates product-level OEM 5P7816.
Compatible Engines
PAI lists Caterpillar 3406E Series; Caterpillar C15 Engine; Caterpillar C16 Engines; Caterpillar C18 Engine. Match the complete required part number and listed application before ordering.
Manufacturer product cross-references
Caterpillar 5P-7816
Caterpillar 5P7816
Cummins 4890088
Compare the complete part number, material and required seal specification before ordering.
PAI Part #: 321329
OEM References:
- CATERPILLAR 5P-7816
- CATERPILLAR 5P7816
- CUMMINS 4890088
Applications:
- CATERPILLAR 3406E SERIES
- CATERPILLAR C15 ENGINE
- CATERPILLAR C16 ENGINES
- CATERPILLAR C18 ENGINE
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 |
|---|
| 5P-7816 |
| 5P7816 |
| 4890088 |
| CATERPILLAR 5P-7816 |
| CATERPILLAR 5P7816 |
| CUMMINS 4890088 |
| PAI 321329 |
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.