CAT 1931736 SEAL-O-RIN for 325C Caterpillar Part - WSTPARTS
Need a dependable Drivetrain part for your Caterpillar 325C, 325D and C9 machine? The 1931736 SEAL-O-RIN from WSTPARTS is manufactured to OEM-grade tolerances. It is categorized under Drivetrain. Every unit is fitment-verified before dispatch, backed by factory-direct pricing and warranty coverage, and currently in stock for dispatch within 24 hours. Manual reference: C9: FUEL SYSTEM, group 416-2712, page 152; 325C: HYDRAULIC SYSTEM, group 244-8477, page 509.
1931736 SEAL-O-RIN for Caterpillar 325C — Genuine & OEM Replacement Part
WSTPARTS supplies genuine and high-quality OEM replacement SEAL-O-RIN (Part # 1931736). Designed for CAT 325C, 325D, C9, 320C, 320D equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 325C, 325D, C9, 320C, 320D
- ✔ Meets Caterpillar original quality and performance standards
- ✔ Genuine CAT parts with anti-counterfeit label | OEM alternatives with warranty
- ✔ In stock, ready to ship
Specifications
| Part Number (MPN) | 1931736 |
| Product Name | SEAL-O-RIN |
| Brand | CAT |
| Applicable Models | 325C, 325D, C9, 320C, 320D |
| Weight | 0.05 kg |
| Condition | New (Genuine / OEM Equivalent) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 1931736 in the Caterpillar parts manual: the machine it is published under, the system it belongs to, the group number and the manual page. Use it to confirm the part against your own parts book before ordering.
| Machine | System | Group No. | Manual Page |
| C9 | FUEL SYSTEM | 416-2712 | p.152 |
| 325C | HYDRAULIC SYSTEM | 244-8477 | p.509 |
| 325D | HYDRAULIC SYSTEM | 272-6959 | p.386 |
System Notes — FUEL SYSTEM
The fuel system covers the injection pump, injectors, fuel transfer pump, filters and water separator, lines and the tank. It meters and atomises diesel at the precise moment and quantity the engine needs. Modern CAT engines run very tight injector tolerances, so the group is sensitive to water and dirt: a worn injector dribbles instead of atomising, causing rough idle, white smoke and diluted oil, while a clogged filter starves the pump under load. Parts here are replaced when the engine misfires, smokes, loses power under load, or when the water separator keeps tripping — always after the fuel quality itself has been ruled out.
System Notes — HYDRAULIC SYSTEM
The hydraulic system covers the main pump, control valves, cylinders, hydraulic tank, filters, hoses and all the fittings that connect them. It converts engine power into the pressure and flow that drive boom, bucket, steering and travel functions. Hydraulic parts fail mainly through contamination and heat: dirt that passes a worn breather scores pump components, aged hoses crack at the crimp, and O-rings harden and weep under pressure. A part in this group is normally replaced when a function drifts, a cylinder creeps, oil shows up under a machine that used to be dry, or the filter comes out loaded with metal.
FAQ
Is 1931736 the right part for my machine?
Match the part number on your old part, or send us your equipment serial number — WSTPARTS verifies fitment free of charge for CAT 325C.
Genuine vs OEM replacement — what is the difference?
Genuine CAT parts carry an anti-counterfeit label. OEM equivalents are built to the same specifications, bench-tested and supplied with full warranty at a better price.
Stock, shipping and warranty?
In stock — ships within 24 hours. Every order is covered by a 12-month warranty.
📞 Get a Quote: Contact the WSTPARTS parts team | Email: cat@wstparts.com
