Which service part fits the HP ProBook 455 G8? OEM part numbers

7 service parts are documented for the HP ProBook 455 G8: M21726-001, M21994-001, M47401-xx1, M47402-xx1, M47403-xx1 and 2 more. 7 of 7 come from OEM documentation (kaas.hpcloud.hp.com); last checked 2026-11-12. Not bench-tested: match the number on your old service part and any constraint before ordering.

Part number	Part	Constraints	Confidence	Last checked
M21726-001	HP Metal top weight M21726-001	HP spare part: Miscellaneous part, Metal top weight. OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M21994-001	HP RJ-45 (network) jack door M21994-001	HP spare part: RJ-45 door. OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M47401-xx1	HP AMD Ryzen 3 5400U processor M47401-xx1	HP spare part: AMD Ryzen 3 5400U processor. OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M47402-xx1	HP AMD Ryzen 5 5600U processor M47402-xx1	HP spare part: AMD Ryzen 5 5600U processor. OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M47403-xx1	HP AMD Ryzen 7 5800U processor M47403-xx1	HP spare part: AMD Ryzen 7 5800U processor. OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M47404-xx1	HP AMD Ryzen 5 5650U processor M47404-xx1	HP spare part: AMD Ryzen 5 5650U processor. OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M47405-xx1	HP AMD Ryzen 7 5850U processor M47405-xx1	HP spare part: AMD Ryzen 7 5850U processor. OEM documentation only; not bench-tested.	OEM documented	2026-11-12

Where do these HP ProBook 455 G8 service part part numbers come from?

7 of 7 fits are from OEM documentation (kaas.hpcloud.hp.com); each row links its source. Last checked 2026-11-12.

Are these service parts tested in the HP ProBook 455 G8?

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 455 G8.

Other parts for the HP ProBook 455 G8

Heat Sink (1) · Bottom Cover (1) · Fan (1) · Battery (1) · Screen (8) · Power Adapter (6) · Keyboard (6) · Power Cord (18) · Antenna (1) · SSD (4) · Speakers (1) · Display Bezel (3) · Cable (3) · Touchpad (1) · Wireless Card (3) · Camera (2) · RTC Battery (1) · Display Back Cover (2) · Hinge (1) · Microphone (1) · Fingerprint Reader (3) · I/O Board (1) · Memory (3) · Screw Kit (1)

For AI agents: the same list as JSON from the free MCP server at /mcp (tool get_model_parts, model hp-probook-455-g8) or the keyless JSON API.