CAT 1N3784 GEAR-FLYW for 3512 Caterpillar Part - WSTPARTS
The 1N3784 GEAR-FLYW is a genuine and high-quality OEM replacement part compatible with Caterpillar 3512 and 3508C equipment. It is categorized under Drivetrain. Every unit is fitment-verified before dispatch. Manual reference: 3508C: ENGINE ARRANGEMENT, group 116-6893, page 77; 3512: BASIC ENGINE, group 127-8122, page 212.
1N3784 GEAR-FLYW for Caterpillar 3512 — Genuine & OEM Replacement Part
WSTPARTS supplies genuine and high-quality OEM replacement GEAR-FLYW (Part # 1N3784). Designed for CAT 3512, 3508C equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 3512, 3508C
- ✔ Meets Caterpillar original quality and performance standards
- ✔ Genuine CAT parts with anti-counterfeit label | OEM alternatives with warranty
- ✔ Available for order, contact for lead time
Specifications
| Part Number (MPN) | 1N3784 |
| Product Name | GEAR-FLYW |
| Brand | CAT |
| Applicable Models | 3512, 3508C |
| Weight | 11.57 kg |
| Condition | New (Genuine / OEM Equivalent) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 1N3784 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 |
| 3508C | ENGINE ARRANGEMENT | 116-6893 | p.77 |
| 3512 | BASIC ENGINE | 127-8122 | p.212 |
| 3512 | BASIC ENGINE | 471-0882 | p.212 |
System Notes — ENGINE ARRANGEMENT
The engine arrangement group covers the parts that mount and dress the engine as an assembly rather than the engine internals: engine mounts and isolators, belts and tensioners, pulleys, guards, brackets, and the plumbing that connects the engine to the rest of the machine. It is the interface layer, so its failures usually show up as vibration, belt squeal or a component that will not stay aligned. Worn isolators transmit vibration into the frame and fatigue nearby brackets; a tired tensioner lets the belt slip and takes the alternator or water pump with it. Parts are replaced when vibration at idle becomes noticeable or a belt starts tracking off its pulley.
System Notes — BASIC ENGINE
The basic engine group covers the core structure and internals: cylinder block, cylinder head, pistons, rings, liners, connecting rods, crankshaft, bearings, camshaft and the gasket sets that seal them. These parts determine compression, oil pressure and power output. They wear gradually — rings lose tension, bearings show copper, liners glaze — and the first signs are usually blow-by from the breather, rising oil consumption, or a knock that gets louder as the engine warms. Replacing a basic engine part is a planned overhaul decision rather than a roadside fix, so matching the exact part number and serial number range matters more here than anywhere else on the machine.
FAQ
Is 1N3784 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 3512.
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?
Lead time confirmed on request; we quote the fastest available option. Every order is covered by a 12-month warranty.
📞 Get a Quote: Contact the WSTPARTS parts team | Email: cat@wstparts.com
