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SD500.4x
SD500.4x
SD500.4x
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SD500.4x

Marsoni M251S
Sale price$159.50
Pay 4 payments of $39.88 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
SD500.4xIn Store Pick Up Only Highlights 500W 4 Channel Amplifier Optional RED Top Plate Xtreme Thermal Capacity Heatsink Full Range Class D Ultra Small Size for Easy Installation Infineon Chipset Drive Technology Controls Under Reversible Top Cover Click in Place Crossover Controls Clip Indicator by Level Controls Band Pass Capable Auto Turn On (DC Signal) 2ch 4ch Input Selector High Low Level RCA Inputs Audio Precision Quality Control Verification 4 AWG
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Quick Dispatch:

Your SD500.4x 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 SD500.4x ships.

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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.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 615 reviews
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Product Reviews
W
Verified Purchase
Walter W. Watson
Pawtucket, US
★★★★★ 5
Perfect Fit for 2018 Forester
I've purchased various filters from EP Auto and each one matches the vehicle's needs and is a good value.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
S
Verified Purchase
Seneca W.
Pawtucket, US
★★★★★ 4
Easy self maintenance.
Does the job of what theu try to upset you Valvoline for a fraction of the price and easy to install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 27, 2025
A
Verified Purchase
Amazon Customer
Alexandria, US
★★★★★ 5
Good filter!
I have used this replacement filter for the past 5 changes. Works great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
D
Verified Purchase
D'Lynn
Bozeman, US
★★★★★ 5
Saved money
Saved money d.i.y.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
S
Verified Purchase
StanY
Lake Worth, US
★★★★★ 5
Fits my 2015 Subaru Forester perfectly
Works as designed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026

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