B&C 3400 Watt 8 Ohms 18" Pro Woofer - 18SW115-8

Marsoni

M251S

$381.85

Get it in 3 business days with 1 day shipping. Friday, May 29

B&C 3400 Watt 8 Ohms 18" Pro Woofer - 18SW115-8B&C 18SW115 8 18 Inch 8 ohms 3400W Neodymium Professional Woofer Overview 3400 W continuous program power capacity 4. 5 in split winding copper voice coil 35 1500 Hz response 97 dB sensitivity 60 mm peak to peak excursion before damage Neodymium magnet allows a very high force factor and linear excursion Double silicone spider with optimized compliance Ventilated voice coil gap for reduced power compression Aluminium demodulating ring for very low

Easy Shipping

Quick Dispatch:

Your B&C 3400 Watt 8 Ohms 18" Pro Woofer - 18SW115-8 orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your B&C 3400 Watt 8 Ohms 18" Pro Woofer - 18SW115-8 ships.

Need Help?
Questions about B&C 3400 Watt 8 Ohms 18" Pro Woofer - 18SW115-8, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for B&C 3400 Watt 8 Ohms 18" Pro Woofer - 18SW115-8 in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

Definitely better than the old plugs that probably had 80k miles on them. The one star off is because I had a misfire after installing. Not sure if I damaged the plug or what, but a reinstall didn't fix the misfire. In my genius, I rushed to try to gap it and ended up breaking the iridium tip. Put the old plug into cylinder 3 (where the misfire was) and it was fine. Gonna have to get a new single tomorrow at my local shop, but a bit frustrating to get a misfire after install.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 27, 2026

Verified Purchase

Britincali

Battle Creek, US

★★★★★ 5

Upgrade from OEM

After seeing a quite ludicrous $403 quote to change 4 spark plugs in a Mazda3 I decided to show my son how easy it is. These were an upgrade from OEM parts. They were gapped perfectly for the car. They took 20mins to fit and work fine.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on February 11, 2026

Verified Purchase

ANDRES FIGUEROA

Port Orchard, US

★★★★★ 5

Very good

The best quality. Runs like new again.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on March 12, 2026

Verified Purchase

Ale

Draper, US

★★★★★ 1

garbage spark plugs

misfired after 30 minutes of driving cylinder 4 misfire code, left me stranded on the highway with baby in car. “(9621)” at the end of description is a lie, was not compatible with my vehicle even with compatibility test.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on May 17, 2026