Alpine S-W12D4BX 12" Car Subwoofer Fits 14-18 GMC Sierra Crew Cab w/ HA-A800.1

HiFi Sound Connection Car Audio
(296652)
Registered as a business seller
US $384.95
Approximately£286.70
Condition:
New
More than 10 available1 sold
Breathe easy. Free postage and returns.
Other people bought this. 1 has already sold.
Postage:
Free Standard Shipping.
Located in: Nixa, Missouri, United States
Delivery:
Estimated between Tue, 21 Oct and Fri, 24 Oct to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the delivery service selected, the seller's delivery history and other factors. Delivery times may vary, especially during peak periods.
Returns:
30 days return. Seller pays for return postage.
Payments:
    Diners Club

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eBay item number:133460390825
Last updated on 17 Oct, 2025 00:44:07 BSTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging ...
Brand
Harmony Accessory Master
MPN
HA-SWKS
UPC
021221334255
Category

Item description from the seller

Seller business information

I certify that all my selling activities will comply with all EU laws and regulations.
About this seller

HiFi Sound Connection Car Audio

98.7% positive Feedback1.1M items sold

Joined Feb 2001
Registered as a business seller
We offer the lowest prices on car audio gear along with the best customer service on the internet. Please feel free to email us at sales@hifisoundconnection with any questions. We are here to help!!! ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable postage cost
5.0
Delivery time
5.0
Communication
4.9

Seller Feedback (339,292)

All ratingsselected
Positive
Neutral
Negative
  • 6***u (4406)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    OK great value very poor packing, item hurt by shipping company, first 4 contacts in first four days I got four different answers to supply of one lost tee piece after providing pictures and fixing the bent parts. Finally seller advised they had no control of inventory of small parts that come in their items, and I would have to repack and ship back a 50 lb item and receive a refund then I could repurchase. I modified it and made the item work for me. I think I would buy elsewhere but item is A+
  • 3***6 (17)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    I received the radio/cd player promptly and in good condition; however I realized that I had ordered the wrong one. It was entirely my fault because I didn't realize that the radio/cd player for a JBL sound system was different, even though at first glance they appear to be the same. When I contacted them to let them know I was returning it, the were very cordial and understanding. I would definitely recommend them as a seller and would definitely do business with them again.
  • y***e (992)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Item arrived as advertised but didnt fit quite like what I expected from Metra. The fit wasnt exact and I returned it and the seller was great however the several days it took to be refunded was weird. Not sure why it took so long. But seller was cordial the entire time.

Product ratings and reviews

4.9
9 product ratings
  • 8 users rated this 5 out of 5 stars
  • 1 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Most relevant reviews

  • If you have a regular cab truck this box is for you

    This is a nice addition to your already existing speakers i have 2 JBL 6'' in the doors and 2 JBL 6x9's in boxes in the back behind the seat i added the kicker box with a Kenwood 600 w amp and it bangs the doors off it fits nicely behind the seat you will not loose any leg room I'm 6'1'' and have a 97 chevy regular cab w/t 1500 and don't notice any difference with leg room. Its a good value and crisp base and that punch your looking for when the right song comes on. you will not be disappointed in my opinion so go for it when your jamming with your new box you can remember me and say to your self Wow that guy was right. hope this helps

    Verified purchase: YesCondition: NewSold by: hifisoundconnection

  • Great sound. Great value.

    One of the best purchases I've made this year. Great sound. Great value.

    Verified purchase: YesCondition: NewSold by: hifisoundconnection

  • Nice 12 inch for the 74 c10

    Good sound, just a bit bigger box than the ported 10 sub i had behind seat so I lost a little leg room. At 6ft 1 every inch is important. Hits just right, not crazy hard but not weak either. Thanks amazing price!!!!!!

    Verified purchase: YesCondition: NewSold by: hifisoundconnection

  • Sounds good but upside down lmao

    It works good sub was mounted upside down but that's not like it effects the way it performs but I plan on buying another one for here in a week or two if it's upside down I'll have to rate a 4

    Verified purchase: YesCondition: NewSold by: hifisoundconnection

  • Installed easily and sounds great thanks...

    Installed easily and sounds great thanks

    Verified purchase: YesCondition: NewSold by: hifisoundconnection