Chevy / GMC OBS 3.5" Dash Speaker Adapter Set – 4x6 to 3.5" Conversion Plates

Chevy / GMC OBS 3.5" Dash Speaker Adapter Set – 4x6 to 3.5" Conversion Plates

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€35,00 EUR
€35,00 EUR
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Processing time is 1–3 business days.

Larger items that require extra printing time may take 1–2 additional days.

Estimated delivery times:

  • EU: 5–12 business days
  • USA: 7–15 business days
  • Rest of World: 10–20 business days
  • DHL Express: usually 2–7 business days worldwide

Every order includes a tracking number.

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Chevy / GMC OBS 3.5" Dash Speaker Adapter Set – 4x6 to 3.5" Conversion Plates

Upgrade the front dash speakers in your Chevy / GMC OBS truck with this pair of custom adapter plates, designed to fit 3.5" aftermarket speakers in the factory 4x6 dash speaker locations.

These adapters are made to provide a clean mounting solution while allowing the factory dash speaker cover / fabric mesh to be reinstalled over the speaker area.

⭐ Features

Designed for Chevy / GMC OBS front dash speaker upgrades

Converts factory 4x6 dash speaker location to 3.5" aftermarket speakers

Uses original factory mounting area

Allows factory dash speaker cover / mesh to be reinstalled

Low-profile plate design for snug fit under the dash cover

Clean OEM-style installation

No major dashboard modification required

Sold as a complete left + right set

🔧 Fitment & Installation

Vehicle compatibility:

Chevy OBS trucks

GMC OBS trucks

Approx. 1988–1994 front dash speaker applications

May also fit similar GM dash speaker layouts with matching factory 4x6 speaker openings

Speaker compatibility:

3.5" aftermarket speakers

Designed for replacing factory 4x6-style dash speakers with compact 3.5" speakers

Installation notes:

Fits under the factory dash speaker cover

Factory fabric mesh / grille can still be installed over the adapter

Uses factory dash speaker mounting area

Speaker mounting hardware not included

Speakers are not included

Please compare your original dash speaker shape and mounting points before ordering

🖨 Material & Print Quality

Printed in ASA only

Heat-resistant – suitable for hot car interiors

UV-stable – ideal for long-term use

Strong and rigid construction

This is a 3D-printed part. Minor layer lines or surface marks may be visible. Optional light sanding or painting is recommended for a perfect cosmetic finish.

📦 Included

2× Dash Speaker Adapter Plates

1× Left Side Adapter

1× Right Side Adapter

(Complete set – left & right)

Order processing time is up to 3 working days. Each part made individually with care, please be patient and let us craft your order carefully!

Chevy / GMC OBS 3.5" Dash Speaker Adapter Set – 4x6 to 3.5" Conversion Plates

€35,00 EUR

  • ACHIEVING

    4.8

    average rating

  • With

    95%

    positive reviews

  • LESS THAN

    3%

    return rate

Does it come with a warranty?

Yes. All our products are covered by a warranty against manufacturing defects.

If your item arrives damaged, cracked, or incorrect due to our error, we will replace it or issue a refund — your choice.

We will request a photo or video to confirm the issue.

Wear from use or installation mistakes is not covered under warranty.

What happens if I don't like it?

No problem — you can return the item within 60 days, as long as it:


  • has not been used or installed,

  • is not damaged,

  • is returned in good condition.

Shipping costs and customs fees are non-refundable, and return shipping is at the customer's expense unless the product is defective.

How fast is shipping?

Processing time is 1–3 business days.

Larger items that require extra printing time may take 1–2 additional days.

Estimated delivery times:


  • EU: 5–12 business days

  • USA: 7–15 business days

  • Rest of World: 10–20 business days

  • DHL Express: usually 2–7 business days worldwide

Every order includes a tracking number.

What's the returns policy?

You can return any unused and undamaged product within 60 days.

Full refunds are provided for the item cost (shipping and customs fees are non-refundable).

If the product is defective or there was an error on our side, we cover return shipping and offer either:

  • a full refund, or
  • a replacement (your choice).

For full details, please refer to our Return & Refund Policy.

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