★★★★★ 4
OEM quality
Style: One Piece
Good quality replacement. Perfect fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2025
Replaces BW30 PRO-4040 FilmTec DOW / DuPont 2,400 GPD at 225 PSI 4 x 40 inch Membranes
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Replaces BW30 PRO-4040 FilmTec DOW / DuPont 2,400 GPD at 225 PSI 4 x 40 inch MembranesReplaces BW30 PRO 4040 FilmTec DOW DuPont 2,400 GPD at 225 PSI 4 x 40 inch Membranes Financing Options Available at Chekout via Shop Pay & Paypal! In Stock & Ships from the United States! For International Shipments Contact Us for a Quote! PLEASE REFERENCE TABLE BELOW Permeate flow and salt rejection based on the following test conditions: 2000 ppm TDS, 225psi (1. 55Mpa), 77 F (25 C),pH 7. 5 and 15% recovery Flow rates for individual elements may
Quick Dispatch:
Your Replaces BW30 PRO-4040 FilmTec DOW / DuPont 2,400 GPD at 225 PSI 4 x 40 inch Membranes orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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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
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4.3 ★★★★★
Based on 1630 reviews
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Product Reviews
★★★★★ 5
Exact fit, no trimming needed
Style: One Piece
Ordered this for my Ford F-150 and it dropped right into the airbox perfectly — same dimensions as the OEM filter, same end seals, same fit. No gaps, no air bypass around the edges. Clean swap in under five minutes. Engine runs smooth and the price is unbeatable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
★★★★★ 5
very nice product
Style: Two Pieces
It fits perfectly. Easy to install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 15, 2026
★★★★★ 5
Good Product and Price.
Style: One Piece
Great filter, fits perfectly. Very close to OEM fit. I have 2015 Mercedes E350, fit perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
★★★★★ 5
good name bosch ,works well
its a bosch it fits does not leak so its good in my opinion
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
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