Cat Regulator Housing Gasket, PAI 331284 (OEM 9Y2588), Pack of 5
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.
-
331285Cat Regulator Cover Gasket, PAI (OEM 4N1156), Pack of 5 In stock -
381851Cat / Caterpillar THERMOSTAT In stock -
EOS-3305Cat / Caterpillar SEAL In stock -
331347Cat Regulator Housing Gasket, PAI (OEM 1393550), Pack of 5 In stock -
331290Cat Regulator Housing Gasket, PAI (OEM 1048585), Pack of 5 In stock
| Brand | PAI Industries |
| Part Category | Gaskets & Seals |
| Sub-Type | Gasket |
| Engine Make | Caterpillar |
| Engine Model | 3406E · C15 · C16 · C18 |
Pack of 5.
PAI 331284 is a regulator housing gasket. PAI lists Caterpillar 3406E, C15, C16, C18 and 3400 applications and identifies Caterpillar OEM reference 9Y2588.
Compare the complete part number and listed application with your required part before ordering.
Fits:
- CATERPILLAR 3406E SERIES
- CATERPILLAR C15 ENGINE
- CATERPILLAR C16 ENGINES
- CATERPILLAR C18 ENGINE
- CATERPILLAR 3400 SERIES
OEM cross-references:
- CATERPILLAR 9Y2588
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 |
|---|
| CATERPILLAR 9Y2588 |
| PAI 331284 |
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.








