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Black plastic bottom cover assembly with battery latch and rubber feet

DELL

DELL Inspiron 3420 Bottom Cover Assembly DT877

SKU CH-NHB9-PX73K

Replacement bottom cover assembly with battery latch and rubber feet for Inspiron 3420 laptops

  • Accessory categoryBottom Cover Assembly
  • Product colorBlack
  • Genuine Dell replacement part ensures perfect fit for Inspiron 3420
  • Complete bottom cover assembly includes battery latch and rubber feet
  • Black finish matches original chassis appearance exactly
  • OEM DT877 part number guarantees correct compatibility
  • Ready-to-install assembly restores structural integrity and component protection

Replacement Base Cover for Inspiron 3420

This genuine Dell bottom cover assembly (part DT877) fits the Inspiron 3420 chassis. It restores the structural lower shell of the laptop when the original is cracked or missing. The part ships in black and includes the battery latch and rubber feet already installed.

No Active Cooling or Power Draw

As a passive plastic and metal chassis piece, the cover adds no thermal load, fan noise or electrical consumption. It simply replaces the factory base so the existing cooling vents and internal layout remain unchanged. Normal operation stays exactly as Dell engineered it.

Sustained Protection Under Daily Load

The assembly maintains rigid support for the motherboard, battery and drive bays during continuous use. Because it replicates the OEM design, screw posts and latch points stay aligned through repeated heating and cooling cycles. Buyers needing a different colour, a palm-rest assembly or a complete top case will not find those items here.

How it compares

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

Price $6.99
Cheaper than about 83% of the 8,808 comparable items (median $16.99).

Specifications

Product
Brand nameDell
Model nameInspiron 3420
Part numberDT877
Accessory categoryBottom Cover Assembly
Product colorBlack

Questions about this item

How do I install the DT877 bottom cover on my Inspiron 3420 and which step is often missed?

Remove all screws from the old base, swap the assembly, then reattach every screw; the step often missed is pressing each rubber foot firmly so the adhesive bonds before the laptop is turned over.

What maintenance will the DT877 bottom cover need over time?

The rubber feet can wear smooth or peel off; replace them when they no longer grip the desk, and clean the battery latch if debris stops it from clicking shut.

What is the first limit I will hit with the DT877 bottom cover during sustained use?

The plastic mounting tabs can crack if the chassis flexes repeatedly, so the structural integrity of the cover itself is the first limit under heavy daily handling.

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