Best in 7 days
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Description
Blue Sea Systems 4027 AC Isolation Cover - 5-1/4 x 7-1/2x3 – Marine Electrical Replacement PartBlue Sea Systems 4027 AC Isolation Cover 5 1 4 x 7 1 2x3 Marine Electrical Replacement Part is organized for electrical wiring & connectors shoppers who need a clear, professional marine parts buying experience. 4027 AC Isolation Cover 5 1 4 x 7 1 2x3 Features: Provides electrical insulation for exposed panel backs Provides mechanical protection for panel backs protruding into lockers Lightweight material is easily drilled for wire entrance and exit
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- Free Standard Shipping on $100+ Orders to the USA.
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- We offer a 30-day return/exchange service after receiving.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.6 ★★★★★
Based on 1528 reviews
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Product Reviews
★★★★★ 3
Cheap but works
Size: 2002-2005 E46
Why did you pick this product vs others?:
These are cheap, but work. They don’t snap in well and don’t fit the edges perfectly. That being said, they’re cheap and fill the hole if your grill is broken or missing.
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Reviewed in the United States on June 29, 2025
★★★★★ 5
Fit perfect
Size: 2002-2005 E46, Size: 2002-2005 E46
Changes the look completely on the car majority of the chrome trim is now black
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Reviewed in the United States on May 22, 2023
★★★★★ 5
inexpensive way to clean up the look of your e46.
Size: 2002-2005 E46
nearly perfect fit which is alot to ask for, especially on a 23 year old car. these fit well enough that I'm happy with them.
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Reviewed in the United States on June 23, 2025
★★★★★ 5
Great quality and noticed an immediate difference!
Style: BE-966H 1-Pack
Even though it’s not the OEM (original) filter, the quality is outstanding! It was easy to install and fits perfectly. I noticed a significant improvement in the air quality inside my car right away. Definitely a great buy!
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Easiest DIY ever
Style: BE-157H 1-Pack
So a Toyota dealer will want $40+ to replace this filter, but for $10 and 2mins you can easily do this yourself.
There’s a great 1:30 how-to vid on the YouTube, drop the glove box (one push) open the little door, remove old filter (note the arrow) and put in the new one, close door, close glove box, enjoy better flow and fresh air. This filter is a HEPA so it’s a performance upgrade over the OEM, fit is perfect, seems sturdier than the OEM, great value if you’ve got 2mins.
Highly recommend. Thanks!
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Reviewed in the United States on June 23, 2025
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