CAT 7Y3919 HORN A for 330C Caterpillar Part - WSTPARTS
The 7Y3919 HORN A is a genuine and high-quality OEM replacement part compatible with Caterpillar 330C, 325C and 330D equipment. It is categorized under Light/Lamp. Every unit is fitment-verified before dispatch. Manual reference: 325C: OPERATOR STATION, group 161-3751, page 913; 325D: OPERATOR STATION, group 291-7559, page 692.
7Y3919 HORN A for Caterpillar 330C — Genuine CAT & Replacement Part
WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement HORN A (Part # 7Y3919). Designed for CAT 330C, 325C, 330D, 336D, 325D, 320C, 320D equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 330C, 325C, 330D, 336D, 325D, 320C, 320D
- ✔ Meets Caterpillar original quality and performance standards
- ✔ Genuine CAT lines: New Genuine / Cat Reman / Cat Classic | OEM-equivalent direct replacements
- ✔ Available for order, contact for lead time
Specifications
| Part Number (MPN) | 7Y3919 |
| Product Name | HORN A |
| Brand | CAT |
| Applicable Models | 330C, 325C, 330D, 336D, 325D, 320C, 320D |
| Weight | 0.45 kg |
| Condition | New (Genuine CAT / OEM-equivalent direct replacement) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 7Y3919 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 |
| 325C | OPERATOR STATION | 161-3751 | p.913 |
| 325D | OPERATOR STATION | 291-7559 | p.692 |
| 330C | OPERATOR STATION | 161-3751 | p.865 |
| 330D | OPERATOR STATION | 267-8072 | p.728 |
| 336D | OPERATOR STATION | 291-7559 | p.676 |
| 330D | OPERATOR STATION | 291-7559 | p.729 |
| 330D | OPERATOR STATION | 291-7559 | p.717 |
System Notes — OPERATOR STATION
The operator station covers the cab structure, seat and suspension, glass, wipers, door hardware, pedals, joysticks, armrests, HVAC ducting and the interior trim. It is the group that decides how tolerable a ten-hour shift feels. Wear here is driven by daily entry and exit, sun exposure and dust: seat suspensions sag, door struts lose charge, wiper linkages seize, and rubber seals harden until the cab leaks in rain. Parts in this group are replaced when a control feels vague, a latch no longer holds, or the cab no longer keeps dust and water out — small items, but the ones operators complain about first.
FAQ
Is 7Y3919 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 330C.
Genuine CAT vs direct replacement — what is the difference?
Genuine CAT covers three factory lines: New Genuine, Cat Reman (core exchange with core charge) and Cat Classic (brand-new economy line). OEM-equivalent direct replacements are non-CAT parts; grade and warranty are confirmed in the quotation.
Stock, shipping and warranty?
Lead time confirmed on request; we quote the fastest available option. Every order is covered by a warranty per quotation.
📞 Get a Quote: Contact the WSTPARTS parts team | Email: cat@wstparts.com
