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Black plastic laptop base cover with screw holes and port cutouts

DELL

DELL PTM4C Base Bottom Cover Vostro 15 3558 Inspiron 5558 5559 5551 5552

SKU CH-SNNR-QV6YV

Genuine Dell OEM base bottom cover for Vostro 15 3558 and Inspiron 15 5551, 5552, 5558, 5559 laptops

  • Genuine Dell OEM part ensures exact fit
  • Compatible with Inspiron 5551, 5552, 5558, 5559 and Vostro 3558
  • Dell part number PTM4C confirms correct replacement
  • Includes complete base bottom cover assembly
  • New condition guarantees pristine installation surface

Dell PTM4C Bottom Cover for Vostro and Inspiron 15

This genuine Dell OEM base bottom cover carries part number PTM4C and fits the Vostro 15 3558 along with the Inspiron 15 5558, 5559, 5551 and 5552 models. It replaces a damaged or missing original chassis panel. The assembly is supplied new and ready for installation.

Who this suits and who should look elsewhere

Repair technicians and owners of the listed Dell 15-inch laptops can use this cover to restore structural integrity and screw-mount alignment. Buyers with other Dell series or non-Dell notebooks cannot use this part because the mounting points differ.

Deciding specification — Dell part number PTM4C

The PTM4C part number is the single identifier that confirms compatibility across the Vostro 15 3558 and Inspiron 15 5551, 5552, 5558 and 5559 chassis. Matching this number to the service tag or existing cover ensures the correct fit.

How it compares

Measured against everything we stock in Cable Locks & Laptop Extras, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 80% of the 8,808 comparable items (median $16.99).

Specifications

Product
Brand nameDell

Questions about this item

How is the PTM4C base bottom cover installed on a Vostro 15 3558, and what step is often missed?

Remove all screws from the old chassis, transfer the motherboard, battery, and cooling assembly, then re-apply every screw in the correct torque sequence; skipping the screw-map check leaves the palm rest loose.

What maintenance or replacement will the PTM4C cover need over time?

The plastic mounting bosses can crack after repeated disassembly; if threads strip, the cover must be replaced rather than repaired.

What limit appears first on the PTM4C cover during sustained heavy use?

Heat from the internal components can warp the thin plastic ribs near the fan exhaust, causing the cover to bow and create gaps.

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