Description
PAI 480060 is an aftermarket injection pressure regulator (IPR) valve that replaces Navistar OEM 1841086C91 and 1841086 on first-generation DT466E and DT530E HEUI engines (1993 – 1999). The IPR modulates high-pressure oil flow to the HEUI rail under ECM duty-cycle control, setting injection control pressure on demand to govern engine power output.
Specifications
| Manufacturer | PAI Industries |
|---|---|
| Part Number | 480060 |
| Part Type | Injection Pressure Regulator (IPR) Valve |
| Engine Compatibility | Navistar DT466E, DT530E (HEUI, 1993 – 1999) |
Cross References
This IPR valve replaces or is equivalent to the following part numbers:
- Navistar: 1841086, 1841086C91
- PAI Industries: 480060
- Alliant Power: AP63402
- Mack: 4333-1841086C91
Applications
This IPR valve fits the following Navistar / International engines:
- Navistar DT466E 7.6L HEUI (1993 – 1999)
- Navistar DT530E 8.7L HEUI (1993 – 1999)
Representative vehicles using these engines:
- International 4700 / 4800 / 4900 medium-duty (DT466E) (1995 – 1999)
- International 8100 / 8200 (DT530E) (1995 – 1999)
- School bus chassis with DT466E (Blue Bird, IC, Thomas Saf-T-Liner)
For the connector-gasket kit version of this regulator, see PAI 480059 (Navistar 1833798C91). The 2000+ G2 HEUI engines use a different IPR valve (Navistar 1841217C91 / PAI 480061).
Verify your engine serial number before ordering — the 1993-1999 HEUI generation, the 2000+ G2 HEUI generation, and the post-2003 high-pressure common-rail engines all use different IPR valves.









