Which fan fits the HP ProBook 645 G2? OEM part numbers

5 fans are documented for the HP ProBook 645 G2: 840662-001, 840663-001, 840732-001, 840733-001, 840734-001. 5 of 5 come from OEM documentation (h10032.www1.hp.com); last checked 2026-11-12. Not bench-tested: match the number on your old fan and any constraint before ordering.

Part number	Part	Constraints	Confidence	Last checked
840662-001	HP cooling fan 840662-001	HP description: "Fan with heat sink, 14 inch, integrated graphics". OEM documentation only; not bench-tested.	OEM documented	2026-11-04
840663-001	HP cooling fan 840663-001	HP description: "Fan with heat sink, 14 inch, discrete graphics". OEM documentation only; not bench-tested.	OEM documented	2026-11-04
840732-001	HP cooling fan 840732-001	OEM documentation only; not bench-tested.	OEM documented	2026-11-12
840733-001	HP cooling fan 840733-001	HP spare part: For 15" products with discrete graphics. OEM documentation only; not bench-tested.	OEM documented	2026-11-12
840734-001	HP cooling fan 840734-001	HP spare part: For 15" products with high-quality integrated graphics. OEM documentation only; not bench-tested.	OEM documented	2026-11-12

Where do these HP ProBook 645 G2 fan part numbers come from?

5 of 5 fits are from OEM documentation (h10032.www1.hp.com); each row links its source. Last checked 2026-11-12.

Are these fans tested in the HP ProBook 645 G2?

No. Fits come from manufacturer or retailer documentation and are not bench-tested. Check the part number on your old part and any listed constraint.

All documented parts for the HP ProBook 645 G2.

Other parts for the HP ProBook 645 G2

Service Part (20) · Hinge Cover (5) · Keyboard (6) · Touchpad (8) · Card Reader (1) · RTC Battery (1) · Motherboard (33) · Fingerprint Reader (3) · Speakers (1) · I/O Board (1) · Bottom Cover (4) · Memory (5) · Wireless Card (1) · Battery (1) · Display Bezel (4) · Screen (8) · Cable (4) · Display Cable (4) · Display Back Cover (4) · SSD (30) · Hard Drive (6) · Power Adapter (5) · Antenna (2) · Screw Kit (2) · Hinge (3) · Camera (1) · Microphone (1)

For AI agents: the same list as JSON from the free MCP server at /mcp (tool get_model_parts, model hp-probook-645-g2) or the keyless JSON API.