3286278 Cummins Water Pump For 4B 6B ISB QSB Engines

Belt-driven water pump for Cummins 4BT3.9, 6BT5.9, ISB5.9, QSB5.9 and QSB6.7 engines. Approx. 2.77 kg.

SKU: 3286278

Description Additional information

Water pump 3286278 covers the Cummins B series — 4BT3.9, 6BT5.9, ISB5.9, QSB5.9 and QSB6.7. It is a single-stage centrifugal pump driven by belt from the crankshaft pulley, measuring 165 mm high with a Ø140 mm flange and Ø50 mm inlet, and weighing about 2.77 kg with O-ring. An RX repair kit is available as 3286278RX.

Specifications

Part Number	3286278; RX repair kit: 3286278RX
Fit Engines	4BT3.9 / 6BT5.9 / ISB5.9 / QSB5.9 / QSB6.7 (B series)
Drive Type	Belt drive (crankshaft pulley to water pump pulley)
Structure	Single-stage centrifugal pump
Weight	~2.77 kg (with O-ring)
Dimensions	H 165mm × Flange Ø140mm × Inlet Ø50mm

Key Features

Single-stage centrifugal pump
Belt drive from the crankshaft pulley
165 mm height, Ø140 mm flange, Ø50 mm inlet
Approximately 2.77 kg including O-ring
RX repair kit available as 3286278RX

Typical Applications

Light and medium commercial vehicles
Compact excavators and loaders
Generator sets
Industrial power units

Ordering from Sino Bus Parts

Wholesale pricing; bulk orders welcome
Global shipping
Fitment confirmed against your engine serial or CPL before dispatch
Contact us on WhatsApp for a quotation

Part Number	3286278
Fitment	Cummins 4BT3.9 6BT5.9 ISB QSB
Product Type	Water Pump
Material	Cast Iron
Quality Standard	Genuine Cummins DCEC Quality
MOQ	1piece (Bulk Orders Accepted）
Lead Time	3-15 Days Global Shipping

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