MerCruiser® 861126A1
MerCruiser® cooler-mounted fuel-pressure regulator 861126A1. Verified for 454 MAG MPI (1999–2001), 7.4L L29 / MIE L29 (1998–2001), 502 Magnum MPI (1999–2001), and 8.1L / 496 Mag earlier production.
No newer Mercury supersession verified in the approved dataset.
View 861126A1 Regulator Page861126A1 is a cooler-mounted regulator. 7.4L L29 and 8.1L / 496 Mag earlier production use this alongside a rail regulator simultaneously. Verify your complete fuel-system architecture and serial number before ordering.
Verified Engine Applications
Application rows are derived from the verified Mercury/Quicksilver fitment matrix.
| Engine Model | Years | Serial Range | Status |
|---|---|---|---|
| MerCruiser® 454 MAG MPI — 454 V8 | 1999–2001 | 0L085400–0M024999 | Verified |
| MerCruiser® 454 MAG MPI Horizon MIE — 454 V8 | 1999–2001 | 0L086050–0L674000 | Verified |
| MerCruiser® 7.4L MPI L29 — 454 V8 | 1998–2001 | 0L010003–0M024330 | Verified |
| MerCruiser® 7.4L MPI MIE L29 — 454 V8 | 1998–2001 | 0L010003–0L674613 | Verified |
| MerCruiser® 350 Magnum MPI — 350 V8 | 1999–2001 | 0L302200–0M299999 | Verified |
| MerCruiser® 502 Magnum MPI — 502 V8 | 1999–2001 | 0L085432–0M024999 | Verified |
| MerCruiser® MX 6.2L MPI — 377 V8 | 1998–2001 | 0L012009–0M299999 | Verified |
| MerCruiser® 8.2L MPI MIE — 496 V8 | 1999–2001 | 0L086013–0L674200 | Verified |
| MerCruiser® 8.1L MIE — 496 V8 | 2001–2004 | 0M026000–0W089999 | Verified |
| MerCruiser® 8.1L HO MIE — 496 V8 | 2001–2004 | 0M026000–0W089999 | Verified |
| MerCruiser® 496 Mag — 496 V8 | 2001–2004 | 0M025000–0W059999 | Verified |
| MerCruiser® 496 Mag HO — 496 V8 | 2001–2004 | 0M025000–0W059999 | Verified |
| MerCruiser® 496 Mag DTS — 496 V8 | 2001–2004 | 0M025000–0W059999 | Verified |
| MerCruiser® 496 Mag HO DTS — 496 V8 | 2001–2004 | 0M025000–0W059999 | Verified |
Complete System — All Components
Components shown are derived from the verified fitment matrix for each engine row. DTS applications may have blank IAC / TPS fields — this is correct per Mercury documentation. Verify your exact engine model and serial number before ordering any component.
MerCruiser® 454 MAG MPI — 454 V8
1999–2001 · 0L085400–0M024999
MerCruiser® 454 MAG MPI Horizon MIE — 454 V8
1999–2001 · 0L086050–0L674000
MerCruiser® 7.4L MPI L29 — 454 V8
1998–2001 · 0L010003–0M024330
MerCruiser® 7.4L MPI MIE L29 — 454 V8
1998–2001 · 0L010003–0L674613
MerCruiser® 350 Magnum MPI — 350 V8
1999–2001 · 0L302200–0M299999
MerCruiser® 502 Magnum MPI — 502 V8
1999–2001 · 0L085432–0M024999
MerCruiser® MX 6.2L MPI — 377 V8
1998–2001 · 0L012009–0M299999
MerCruiser® 8.2L MPI MIE — 496 V8
1999–2001 · 0L086013–0L674200
MerCruiser® 8.1L MIE — 496 V8
2001–2004 · 0M026000–0W089999
MerCruiser® 8.1L HO MIE — 496 V8
2001–2004 · 0M026000–0W089999
MerCruiser® 496 Mag — 496 V8
2001–2004 · 0M025000–0W059999
MerCruiser® 496 Mag HO — 496 V8
2001–2004 · 0M025000–0W059999
MerCruiser® 496 Mag DTS — 496 V8
2001–2004 · 0M025000–0W059999