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LK-4000XD Monoblock 4,000 Watts Class D Mono Amplifier

Marsoni M251S
Sale price$350.00
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Get it in 3 business days with 1 day shipping. Friday, May 29
LK-4000XD Monoblock 4,000 Watts Class D Mono Amplifier1 channel 4,000 watts monoblock amplifier 4,000 watts peak power Class D monoblock circuitry 4 OHM continuous RMS: 700 watts 2 OHM continuous RMS: 1,300 watts 1 OHM continuous RMS: 2,000 watts Heavy duty heat sink Variable input gain control Short circuit overload protection Die cast terminals and nickel plated RCA jacks 0 AWG power ground cable inputs Includes remote bass knob
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.6 ★★★★★
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RichD
Phoenix, US
★★★★★ 5
OEM quality
BMW dealer wanted $300 to replace the cabin filters. Watched a 5 minute video and ordered these up. Look identical to OEM and easiest cabin filters I've installed. Save yourself a ton of money and install these yourself. BMW quality without the BMW price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 26, 2025
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Dmytro Sushynskyi
Los Angeles, US
★★★★★ 5
Great filter!
Excellent filter! Fits my 2017 BMW X5 f15. Eliminates all external odors from the street.
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Reviewed in the United States on November 23, 2025
S
Verified Purchase
Shahida M Parveen
Port Orchard, US
★★★★★ 4
Fits bmw x5 35i 2015
Installation was pretty easy. Works as designed. Will update.
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Reviewed in the United States on July 16, 2023
M
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MLG
Cuba, US
★★★★★ 5
Great price
I love Mann filters. Great for the price and great quality. I was surprised how cheap they were ( my car takes 2 filters and two come in the box). They fit like a glove and now I am enjoying fresh air
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Reviewed in the United States on March 30, 2026
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Verified Purchase
Erik Pontes
Belleville, US
★★★★★ 5
Can’t beat MANN quality
Bought to replace the filters on my 2015 bmw x5 as there was a musty smell from ac. Old filters were another junk company that fit very loosely. I was impressed by the quality and how secure the MANN filters locked into the housing; musty smell all gone now! Easy 10min replacement job, comes with VERY detailed instructions for the less mechanically inclined
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Reviewed in the United States on April 12, 2024

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