HP Business Laptop

HP ProBook 450 G4

Spare part numbers for the HP ProBook 450 G4 come from HP's official Maintenance and Service Guide (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001)). US keyboard layouts only. Parts vary by configuration, so match your original part number before ordering. Not bench-tested.

Compatible Replacement Parts (33)

Compatibility from OEM documentation, not bench-tested.

HP 15.6-inch touch display panel assembly (models without WWAN). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

Touch display is spared only as an entire hinge-up. Models without WWAN only. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p27, Computer major components item 1a: "Display panel assembly, touch - Models without WWAN".) Last checked 2026-10-27

HP 15.6-inch touch display panel assembly (models with WWAN). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

Touch display is spared only as an entire hinge-up. Models with WWAN only. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p27, Computer major components item 1a: "Display panel assembly, touch - Models with WWAN".) Last checked 2026-10-27
Keyboard

HP US keyboard with cable, no backlight

OEM Part Number: 827028-001

HP US keyboard with cable, no backlight. Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

United States layout; non-backlit models. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p27, Computer major components item 2: "Keyboard (includes cable) - No backlight 827028-xxx (-001 = United States per HP country-code table)".) Last checked 2026-10-27
Keyboard

HP US keyboard with cable, backlit

OEM Part Number: 827029-001

HP US keyboard with cable, backlit. Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

United States layout; backlit models. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p27, Computer major components item 2: "Keyboard (includes cable) - Backlit 827029-xxx (-001 = United States per HP country-code table)".) Last checked 2026-10-27
I/O Board

HP power button board

OEM Part Number: 905754-001

HP power button board. Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p27, Computer major components item 3: "Power button board".) Last checked 2026-10-27
Palmrest

HP top cover with touchpad assembly

OEM Part Number: 905765-001

HP top cover with touchpad assembly. Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p27, Computer major components item 4: "Top cover (includes touchpad assembly)".) Last checked 2026-10-27
I/O Board

HP function board

OEM Part Number: 905753-001

HP function board. Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p27, Computer major components item 5: "Function board".) Last checked 2026-10-27
Fingerprint Reader

HP fingerprint reader assembly (with cable)

OEM Part Number: 905772-001

HP fingerprint reader assembly (with cable). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

Models with a fingerprint reader. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p27, Computer major components item 6: "Fingerprint reader assembly (includes cable)".) Last checked 2026-10-27
Speakers

HP speaker assembly

OEM Part Number: 905773-001

HP speaker assembly. Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p27, Computer major components item 7: "Speaker assembly".) Last checked 2026-10-27
Battery

HP 851610-855 Battery

OEM Part Number: 851610-855

4-cell lithium-ion battery, 48 Wh, 4.21 Ah (RR03048XL-PR)

Fit & Installation Notes:

OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p27, Computer major components item 8: "Battery, Li-ion (4-cell, 48 WHr, 4.21 Ah)".) Last checked 2026-10-27
Fan

HP fan

OEM Part Number: 905774-001

HP fan. Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p27, Computer major components item 9: "Fan".) Last checked 2026-10-27
I/O Board

HP USB/audio board

OEM Part Number: 905755-001

HP USB/audio board. Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p27, Computer major components item 10: "USB/audio board".) Last checked 2026-10-27
DC-in / Charging port

HP power connector cable

OEM Part Number: 828949-007

HP power connector cable. Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p27, Computer major components item 12: "Power connector cable".) Last checked 2026-10-27
Heat Sink

HP heat sink assembly (discrete graphics)

OEM Part Number: 907364-001

HP heat sink assembly (discrete graphics). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

Discrete graphics models only. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p28, Computer major components item 14: "Heat sink assembly - Discrete graphics models".) Last checked 2026-10-27
Heat Sink

HP heat sink assembly (UMA graphics)

OEM Part Number: 907359-001

HP heat sink assembly (UMA graphics). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

UMA graphics models only. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p28, Computer major components item 14: "Heat sink assembly - UMA graphics models".) Last checked 2026-10-27
Bottom Cover

HP base enclosure

OEM Part Number: 905764-001

HP base enclosure. Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p28, Computer major components item 16: "Base enclosure".) Last checked 2026-10-27
Wireless Card

HP WLAN module (Realtek RTL8723BE-VB 802.11b/g/n)

OEM Part Number: 843338-001

HP WLAN module (Realtek RTL8723BE-VB 802.11b/g/n). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

Match your original wireless card. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p28, Computer major components item 17 (WLAN module, all models): "Realtek RTL8723BE-VB 802.11b/g/n 1x1 Wi-Fi + Bluetooth 4.0 combination WLAN adapter".) Last checked 2026-10-27
Wireless Card

HP WLAN module (Intel Dual Band Wireless-AC 7265NV)

OEM Part Number: 860883-001

HP WLAN module (Intel Dual Band Wireless-AC 7265NV). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

Match your original wireless card. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p28, Computer major components item 17 (WLAN module, all models): "Intel Dual Band Wireless-AC 7265NV (non v-Pro) 802.11 ac 2×2 WiFi + Bluetooth 4.2 Combo Adapter".) Last checked 2026-10-27
Wireless Card

HP WLAN module (Intel Dual Band Wireless-AC 3168)

OEM Part Number: 852511-001

HP WLAN module (Intel Dual Band Wireless-AC 3168). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

ProBook 450 models; match your original wireless card. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p28, Computer major components item 17 (WLAN module, ProBook 450 models): "Intel Dual Band Wireless-AC 3168 802.11ac, Dual Band, 1×1 Wi-Fi + Bluetooth 4.0".) Last checked 2026-10-27
Display Bezel

HP display bezel (models without webcam)

OEM Part Number: 905757-001

HP display bezel (models without webcam). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

Models without a webcam only. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p31, Display components item 1: "Display bezel - Models without a webcam".) Last checked 2026-10-27
Display Bezel

HP display bezel (models with webcam)

OEM Part Number: 905756-001

HP display bezel (models with webcam). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

Models with a webcam only. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p31, Display components item 1: "Display bezel - Models with a webcam".) Last checked 2026-10-27
Camera

HP webcam module

OEM Part Number: 805139-009

HP webcam module. Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p32, Display components item 2: "Webcam module".) Last checked 2026-10-27
Display Cable

HP display/webcam cable assembly (WLAN models)

OEM Part Number: 905760-001

HP display/webcam cable assembly (WLAN models). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

WLAN models only. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p32, Display components item 5: "Display/webcam cable assembly - WLAN models".) Last checked 2026-10-27
Display Cable

HP display/webcam cable assembly (WWAN models)

OEM Part Number: 905761-001

HP display/webcam cable assembly (WWAN models). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

WWAN models only. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p32, Display components item 5: "Display/webcam cable assembly - WWAN models".) Last checked 2026-10-27
Hinge

HP display hinge kit (left and right)

OEM Part Number: 905762-001

HP display hinge kit (left and right). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p32, Display components item 7: "Display Hinge Kit, includes: Left hinge, Right hinge".) Last checked 2026-10-27
Screen

HP 15.6-inch FHD display panel (raw)

OEM Part Number: 809001-003

HP 15.6-inch FHD display panel (raw). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

Raw FHD panel; match your original panel. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p32, Display components item 8: "Display panel (raw) - FHD".) Last checked 2026-10-27
Screen

HP 15.6-inch HD display panel (raw)

OEM Part Number: 860030-002

HP 15.6-inch HD display panel (raw). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

Raw HD panel; match your original panel. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p32, Display components item 8: "Display panel (raw) - HD".) Last checked 2026-10-27

HP display rear cover (WLAN models, includes wireless antennas). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

WLAN models only. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p32, Display components item 9: "Display rear cover (includes wireless antennas) - For use in models with WLAN".) Last checked 2026-10-27

HP display rear cover (WWAN models, includes wireless antennas). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

WWAN models only. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p32, Display components item 9: "Display rear cover (includes wireless antennas) - For use in models with WWAN".) Last checked 2026-10-27

HP cable kit (USB board, TouchPad, power button board, optical drive, function board cables). Documented OEM replacement; see each fit for configuration limits.

Fit & Installation Notes:

OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p30, Cable Kit: "Cable Kit - (1) USB board cable (2) TouchPad cable (3) Power button board cable (4) Optical drive cable (5) Function board cable".) Last checked 2026-10-27
Power Adapter

HP 710412-001 Power Adapter

OEM Part Number: 710412-001

65 W HP Smart AC adapter, non-PFC, 3-prong AC input; 4.5 mm barrel output

Fit & Installation Notes:

OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p35, Miscellaneous parts (AC adapters): "65-W Smart AC power adapter, 4.5 mm barrel connector, 3 prong".) Last checked 2026-10-27
Power Adapter

HP 741727-001 Power Adapter

OEM Part Number: 741727-001

45 W HP Smart AC adapter, non-PFC; 4.5 mm barrel output

Fit & Installation Notes:

OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p35, Miscellaneous parts (AC adapters): "45-W Smart AC power adapter, 4.5 mm barrel connector, 3 prong, NPFC".) Last checked 2026-10-27
Power Adapter

HP 742436-001 Power Adapter

OEM Part Number: 742436-001

45 W HP Smart AC adapter, 2-prong AC input; 4.5 mm barrel output

Fit & Installation Notes:

Two-prong adapter. OEM documentation only; not bench-tested.

Difficulty: Not verified Type: OEM Listed Replacement
Evidence Source: https://h10032.www1.hp.com/ctg/Manual/c05270979.pdf ↗ (HP ProBook 450 G4 Notebook PC / ProBook 455 G4 Maintenance and Service Guide (903116-001), PDF p35, Miscellaneous parts (AC adapters): "45-W Smart AC power adapter, 4.5 mm barrel connector, 2 prong".) Last checked 2026-10-27
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