Best in 7 days
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USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 21 - Jul 26
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Groco Seacock Backing BlockGroco Seacock Backing Block Use the Groco Seacock Backing Block to improve flanged seacock installation. Groco backing blocks are made from an environmentally friendly PVC foam specially formulated for marine applications. The rigid 12 thickness provides secure installation but is flexible enough to conform to minor hull curvature. To install, press threaded brass inserts into the hull side of the backing block into the holes that match the seacock
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
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.3 ★★★★★
Based on 1131 reviews
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Product Reviews
★★★★★ 5
Perfect fit
Perfect fit for my Accord
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
★★★★★ 4
That it filters out debris in the air from going into the engine / cabin
It’s an air filter seems to be doing what it is designed for
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Reviewed in the United States on March 9, 2026
★★★★★ 5
Wonderful
Excellent
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Reviewed in the United States on January 15, 2026
★★★★★ 5
DIY savings
Saved myself $90!
Fit like a glove great value
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Reviewed in the United States on September 22, 2025
★★★★★ 5
Good
Looks to be good quality. Easy install.
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Reviewed in the United States on September 12, 2025
