CAT 1421403 ELEMENT AS for 345C Caterpillar Part - WSTPARTS
The 1421403 ELEMENT AS is a genuine and high-quality OEM replacement part compatible with Caterpillar 345C and 345B equipment. It is categorized under Air Filter. 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: 345B: AIR INLET AND EXHAUST SYSTEM, group 139-8790, page 100; 345C: AIR INLET AND EXHAUST SYSTEM, group 255-2996, page 104.
1421403 ELEMENT AS for Caterpillar 345C — Genuine & OEM Replacement Part
WSTPARTS supplies genuine and high-quality OEM replacement ELEMENT AS (Part # 1421403). Designed for CAT 345C, 345B, 345D equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 345C, 345B, 345D
- ✔ 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) | 1421403 |
| Product Name | ELEMENT AS |
| Brand | CAT |
| Applicable Models | 345C, 345B, 345D |
| Weight | 2.22 kg |
| Condition | New (Genuine / OEM Equivalent) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 1421403 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 |
| 345B | AIR INLET AND EXHAUST SYSTEM | 139-8790 | p.100 |
| 345C | AIR INLET AND EXHAUST SYSTEM | 255-2996 | p.104 |
| 345B | AIR INLET AND EXHAUST SYSTEM | 139-8790 | p.101 |
System Notes — AIR INLET AND EXHAUST SYSTEM
The air inlet and exhaust system covers the air cleaner housing and elements, intake piping, turbocharger, aftercooler, exhaust manifold, turbo mounting hardware and gaskets. It delivers clean, dense air and carries hot gas away. On this group, the two dominant failures are dust ingress and heat cycling: a leaking intake joint lets unfiltered air straight into the cylinders and dusts the rings in a few hundred hours, while exhaust manifold and turbo flange gaskets crack from repeated heat cycles and start whistling or sooting. Parts are replaced when boost drops, the intake tract shows dust trails past the filter, or a soot streak appears at a joint.
FAQ
Is 1421403 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 345C.
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
