
The Cummins 5273458 is a genuine Walker Airsep CCE Air Cleaner (QSB5.9 Marine). G Service Power has this unit new surplus, unused, in stock in the UK at £595, ready for next-day worldwide dispatch. Call +44 7951 632187.

Actual unit photographs. Further photos and video on request.
| Part number (MPN) | 5273458 |
|---|---|
| Manufacturer | Cummins |
| Product | Walker Airsep CCE Air Cleaner (QSB5.9 Marine) |
| Cummins description | CLEANER, AIR |
| Air filter element | Walker 41-1146 / Cummins 4931611 (unit label) |
| Coalescing element set | Walker 41-2008 / Cummins 3971070 (unit label) |
| Engine model | Cummins QSB5.9 marine (Walker 8 in CCE unit; Cummins lists CM850, AC9197-01) |
| Opposite-hand unit | Cummins 5273457 (per Cummins listing) |
| Manufacturer | Walker Engineering Enterprises, Airsep — made in USA |
| Size | 8 in (203 mm) CCE Airsep housing, V-band throat |
| Box | Walker Airsep box, Cummins label dated 27 Nov 2014, serial AR7351 |
| Condition | New surplus — unused, housing under factory CAUTION wrap; box scuffed |
| Location | UK — ready to ship worldwide |
| Condition | New surplus |
| Availability | In stock — next-day worldwide dispatch |
| Price | £595 ex works UK, excl. VAT |
| Reference | GX-5273458 |
The Cummins 5273458 fits Cummins QSB5.9 marine. Related part numbers: 4931611 (kit component, Cummins), 3971070 (kit component, Cummins), 3971069 (kit component, Cummins), 3973523 (kit component, Cummins), 1000266 (kit component, Walker) and 5273457 (related part (same system), Cummins).
| Make | Model | Notes |
|---|---|---|
| Cummins | QSB5.9 marine | Walker documents the 8 in CCE AirSep as factory-fitted to Cummins QSB marine engines, taking the 41-1146 / 4931611 element; Cummins number 5273458 itself is not in any public listing |
| Part number | Brand | Relation | Notes |
|---|---|---|---|
| 4931611 | Cummins | Kit component | 6.75 in tapered air filter element (Walker 41-1146), fitted |
| 3971070 | Cummins | Kit component | internal coalescer element set (Walker 41-2008), fitted |
| 3971069 | Cummins | Kit component | alternative 8 in long service element (Walker 41-1030) listed by Walker for the QSB / QSC 8 in unit — check clearance |
| 3973523 | Cummins | Kit component | air filter cleaning kit (Walker BAF2000) |
| 1000266 | Walker | Kit component | Walker CCE field service kit for two 8 in AirSeps on a QSB |
| 5273457 | Cummins | Related part (same system) | companion Cummins CLEANER, AIR number; the opposite-hand pairing is the seller's reading of the Cummins listing |
Confirm 5273458 against your engine serial number in Cummins QuickServe before ordering; the unit is handed (5273457 is the other number) and the element height (6.75 in 4931611 or 8 in 3971069) must suit your installation. Fitment and interchange data is compiled from manufacturer catalogues and cross-reference listings and can change at engine serial-number breaks. Quote your engine serial number and existing part number when you call and we will confirm before dispatch.
The Cummins Walker Airsep CCE Air Cleaner (QSB5.9 Marine) — part number 5273458 is a genuine Cummins part, supplied at £595 by G Service Power. It is new surplus, held in UK stock and dispatched next day, worldwide.
Genuine Walker Engineering CCE Airsep closed-crankcase air cleaner, Cummins part number 5273458, for the Cummins QSB5.9 CM850 marine engine — the Cummins box label reads Item 5273458, and the housing label lists air filter 41-1146 (Cummins 4931611) and coalescing element set 41-2008 (Cummins 3971070), both fitted (see photos). The Airsep replaces the standard air cleaner and the open crankcase breather in one unit: it filters the turbo intake air and draws crankcase blowby through an internal coalescer, returning the oil to the sump and keeping the engine room, turbo and aftercooler free of oil mist. Walker documents this 8 inch CCE unit as the AirSep factory-fitted to Cummins QSB marine engines, and the Cummins parts listing gives 5273458 as the QSB5.9 CM850 air cleaner (option AC9197-01), with 5273457 the companion number for the opposite hand on a twin installation. Walker's alternative service element is the taller 8 inch Cummins 3971069 (Walker 41-1030). Supplied with the 8 inch housing, blowby lid, a bagged Walker PR2006 component (label dated 05/06/13) and the hose and clamp kit, in the original Walker Airsep box with its Cummins label dated 27 November 2014. Condition: new surplus — never fitted, housing still under its factory CAUTION wrap; the box is scuffed from storage. Price £595. Please confirm 5273458 against your engine serial number before ordering. In UK stock — call +44 7951 632187 or message on WhatsApp for shipping and availability.
Compatibility: fits Cummins QSB5.9 marine — the full list of engines and interchangeable part numbers is on the Compatibility tab. Confirm against your engine serial number before ordering, or call us and we will check it with you.
For sale from UK stock. Quote any of these references when you call.
| Part number | 5273458 — also listed as Walker Engineering 5273458 |
|---|---|
| Brand | Cummins — also sold under Walker Engineering |
| Engine model | Cummins QSB5.9 marine |