Description
Genuine Cummins OEM EGR cooler service kit for first-generation EGR-equipped Cummins ISX and QSX engines, 2002-2006. Replaces Cummins 4309434 (also 4309434NX) and supersedes earlier production numbers 4956008, 2881783, 4320125, and 4952490. Ships as a complete cooler + installation kit so the buyer can replace both the cooler and the gaskets/seals required to reinstall it.
Specifications
| Manufacturer | Cummins |
|---|---|
| Part Number | 4309434 |
| Part Type | EGR Cooler Service Kit |
| Engine Compatibility | Cummins ISX (2002-2006), QSX (1st-gen EGR) |
| Tube Material | T304 stainless |
Kit Includes
- EGR cooler — Cummins 2878071 (qty 1)
- EGR cooler installation kit (gaskets and seals) — Cummins 2881921 (qty 1)
Cross References
This part replaces or is equivalent to the following part numbers:
- Cummins: 4309434, 4309434NX, 4956008, 4956008NX, 2881783, 2881783NX, 4320125, 4952490, 2869133, 4089166, 4089436
Applications
This EGR cooler kit fits the following Cummins engines:
- Cummins ISX (Signature, ISX-15) — 2002-2006 (EPA02 / EPA04, HPI fuel system, 1st-gen EGR)
- Cummins QSX industrial — 1st-gen EGR variants
Verify your engine serial number and EGR generation before ordering. This kit is for the 2002-2006 first-generation EGR architecture only — 2007+ ISX engines (EPA07/10) use a different cooler service kit. Core charge typically applies on this assembly — confirm with a sales rep before ordering.
