Cummins Two-Piece Valve Cover Assembly With Fleetguard Breather And Internal Injector Harness for 5.9L Common Rail B-Series - Used

Cummins-style two-piece cast aluminum valve (rocker) cover assembly for an inline 6-cylinder diesel, complete with Fleetguard crankcase breather module, oil fill cap, and the internal injector wiring harness with three external pass-through connectors.

Application: Possible application — Cummins 5.9L 24-valve common-rail B-series (ISB / QSB 5.9 family). The exact engine model, CPL, and build are not verified. Application not verified — sold by photographs, identifiers, and dimensions.

Condition: Used / untested take-out (grade C). Oxidation, staining, and shop dirt on the aluminum; no cracks or broken bosses seen in the photos. Sealing rails appear intact. The internal harness is present and complete in the photos but has NOT been electrically tested — no continuity or pin-out testing has been performed. Gaskets and seals are not included and are not verified as serviceable.

You receive exactly what is pictured: upper cover with breather and fill cap, plus lower housing with internal harness.

Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase.

Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.

Quote is subject to final fitment confirmation by engine/transmission serial number, part number, photos, and supplier availability.