Product Description
The RetroSound 1987 GMC Suburban 3-Way Stereo Speakers 4" x 10" for Rear Quarter Panel (store SKU RS-SP-1987GMCSUBURBANSTANDARDSTERE, Retro Manufacturing part S-412) is a vehicle-specific RetroSound speaker listing from an authorized dealer.
Application: 1987 GMC Suburban 3-Way Stereo Speakers 4" x 10" for Rear. Install location: side / quarter panel. Speaker size: 4x10. Design: 3-Way.
Published electrical and mounting data for part S-412: 4ohm nominal impedance; TrueRating™ / published power handling 25/50; frequency response 43Hz-21kHz; sensitivity 87dB; mounting depth 2.28″ (58 mm). Figures come from Retro Manufacturing’s product information for this model — if the sheet in the box differs, follow the sheet that ships with the product.
Sized for the side / quarter panel opening on the vehicle years in the title. Test-fit brackets and grills (when included) before final mounting; do not force mismatched openings.
Features for this listing
- Fitment focus: 1987 GMC Suburban 3-Way Stereo Speakers 4" x 10" for Rear (side / quarter panel)
- Manufacturer part S-412 — 4x10
- Authorized RetroSound / Retro Manufacturing product
- Vintage Car Radio does not offer installation
This page is only for RetroSound 1987 GMC Suburban 3-Way Stereo Speakers 4" x 10" for Rear Quarter Panel. Other RetroSound speaker sizes and vehicles have their own listings with their own part numbers and openings — match years, location, and size carefully.
1987 GMC Suburban 3-Way Stereo Speakers 4" x 10" for Rear Quarter Panel specifications
- Manufacturer model: S-412
- Store SKU: RS-SP-1987GMCSUBURBANSTANDARDSTERE
- Years (this listing): 1987
- Vehicle focus: GMC Suburban 3-Way Stereo Speakers 4" x 10" for Rear
- Install location: side / quarter panel
- Nominal Diameter (inch): 4x10
- Description: 3-Way
- Nominal impedance: 4ohm
- Frequency response: 43Hz-21kHz
- Sensitivity: 87dB
- Power Handling (watts RMS/peak): 25/50
- Speaker Grill: NO
- Mounting Depth (inch): 2.28
- Mounting Depth (mm): 58
- Sensitivity (SPL@1w/1m): 87dB
Source: Retro Manufacturing product page for part S-412. If the sheet in the box differs, follow the sheet that ships with the product.
1987 GMC Suburban 3-Way Stereo Speakers 4" x 10" for Rear Quarter Panel wiring and tech tips
- Disconnect the vehicle battery before working on speaker wiring.
- This listing is for the 4x10 speaker (part S-412) at the side / quarter panel location on 1987 GMC Suburban 3-Way Stereo Speakers 4" x 10" for Rear.
- Confirm polarity and load: published impedance is 4ohm; power handling 25/50.
- Verify mounting depth clearance of 2.28″ (58 mm) at the side / quarter panel opening.
- Use brackets, grills, and wire included with this kit when supplied; do not force mismatched openings.
- Do not exceed the RMS rating published for this model.
Vintage Car Radio does not offer installation. Share the manufacturer manuals with your installer if needed.
1987 GMC Suburban 3-Way Stereo Speakers 4" x 10" for Rear Quarter Panel manuals
- Manufacturer product page for S-412 (specs & linked manuals)
- Retro Manufacturing warranty
- Retro Manufacturing help center
Documents on the S-412 product page are the official reference for RetroSound 1987 GMC Suburban 3-Way Stereo Speakers 4" x 10" for Rear Quarter Panel.
One-Year Retro Manufacturing Warranty
Per Retro Manufacturing’s limited warranty, Speakers such as S-412 are covered for 1 year from the original purchase date for defects in materials and workmanship when purchased from Retro Manufacturing or an authorized dealer.
RA required — tech@retromanufacturing.com or 1-888-325-1555, or Vintage Car Radio at 844-802-4499 / 574-226-6676.
Vintage Car Radio does not offer installation.
FAQ — 1987 GMC Suburban 3-Way Stereo Speakers 4" x 10" for Rear Quarter Panel
What exactly is this listing?
RetroSound 1987 GMC Suburban 3-Way Stereo Speakers 4" x 10" for Rear Quarter Panel — manufacturer part S-412, store SKU RS-SP-1987GMCSUBURBANSTANDARDSTERE, for the side / quarter panel position on 1987 GMC Suburban 3-Way Stereo Speakers 4" x 10" for Rear.
Is this the same as every other 4×6 / speaker on the site?
No. Hardware families may share a part number (S-412), but this page’s fitment, years, and install location are specific to this SKU.
Do you install?
No. DIY or a shop you choose.
Warranty?
Typically 1-year Speakers coverage from Retro Manufacturing — see Warranty.
Need help?
844-802-4499 or 574-226-6676.
Specs
Wiring / Tech Tips
Manuals
Warranty
One-Year Retro Manufacturing Warranty
Per Retro Manufacturing’s limited warranty, Speakers such as S-412 are covered for 1 year from the original purchase date for defects in materials and workmanship when purchased from Retro Manufacturing or an authorized dealer.
RA required — tech@retromanufacturing.com or 1-888-325-1555, or Vintage Car Radio at 844-802-4499 / 574-226-6676.
Vintage Car Radio does not offer installation.
