Cummins Walker Airsep CCE Air Cleaner (QSB5.9 Marine) 5273457

About this part

The Cummins Walker Airsep CCE Air Cleaner (QSB5.9 Marine) — part number 5273457 is a genuine Cummins part, supplied at £999.99 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 5273457, for the Cummins QSB5.9 marine engine. The Cummins box label reads Item# 5273457, Walker serial AS0280 is on the box and the unit, 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 Cummins option data gives 5273457 as a QSB5.9 CM850 air cleaner, option AC9176. Our records pair it with 5273458, also in stock, as the opposite-hand unit for a twin installation; the hand is not confirmed, so compare the breather inlet and oil drain positions with your existing unit. Supplied with the housing, blowby lid and hose and clamp kit in the original Walker Airsep box; no turbo adaptors or drain lines. Condition: new surplus, never fitted, the housing still under its factory CAUTION wrap; the box is worn from storage. One available at £999.99 plus VAT. Please confirm 5273457 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.