Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 5 - Jul 10
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Description
Maestrini Brass Flanged Lock Nut (1" BSP Female)The Maestrini brass flanged 1" BSP female lock nut has a diameter of 55mm and is rated to 580 psi. Please be aware that if used for through hull applications, the lock nut fitting must be correctly electrically bonded in order to prevent corrosion. Brass is not recommended for below the waterline, due to it being susceptible to dezincification. Sold singularly.
The Maestrini brass flanged 1" BSP female lock nut has a diameter of 55mm and is rated to 580 psi. Please be aware that if used for through hull applications, the lock nut fitting must be correctly electrically bonded in order to prevent corrosion. Brass is not recommended for below the waterline, due to it being susceptible to dezincification. Sold singularly.Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.7 ★★★★★
Based on 391 reviews
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Product Reviews
★★★★★ 5
It’s the right part and it’s not defective
It fit and works great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 3, 2026
★★★★★ 4
Quick solution to replace that OEM Plastic Mount in your BMW E90
Effective Upgrade: After installation, I have experienced no leaks, which is a significant improvement for my vehicle.
Quality Material: The aluminum construction feels durable and sturdy, offering a long-lasting solution compared to the original fitting.
Cons:
The installation process was a bit tricky. The holes didn't line up perfectly, making it a challenge to fit. While there was no need for drilling, finding the right angle to fit it required some patience and effort. Wider holes could have made the installation easier. I rate it 4 stars because of that.
Despite the challenging installation, the Aluminum Water Hose Fitting Upgrade is a worthwhile investment for anyone experiencing leaks. The improved performance and durability make it a recommended upgrade for BMW E90 owners.
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Reviewed in the United States on May 21, 2024
★★★★★ 5
A-
Great part, had to change oring the one that comes with is way to big, but overall great quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 25, 2025
★★★★★ 5
BOSCH Oil filter
BOSCH Is the best for all car products
Fit like it should have and works great. Always use BOSCH in my car
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 3, 2024
★★★★★ 5
Fit
Perfect fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 1, 2024
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