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![Ronstan Series 40 All Purpose Block - Single Upright Lead [RF41171]](https://cdn.shopify.com/s/files/1/0405/8454/4408/files/70602XL.jpg?v=1745513825 "Ronstan Series 40 All Purpose Block - Single Upright Lead [RF41171]")
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Ships within 48 hours · Estimated delivery Jun 14 - Jun 19
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Description
Ronstan Series 40 All Purpose Block - Single Upright Lead [RF41171]Series 40 All Purpose Block Single Upright Lead Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Ideal for high load applications. Wear resistant sheave material, in lightweight, self lubricating polymer, is suitable for use with rope or wire. Applications: Typically used for halyards at the mast base. Materials: UV stabilised acetal sheave Grade 316 stainless steel load housing
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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4.2 ★★★★★
Based on 2349 reviews
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Product Reviews
★★★★★ 5
Good deal
Size: CF10930&16546AA090
Seems a bit thinner than my last two, but they did come together for the price of one. Seems to be of good quality non the less. Fits well in my 2014 Subaru forester
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Reviewed in the United States on April 22, 2026
★★★★★ 5
Good deal
Size: CA12377&CF12157
Easy to install and much cheaper than the dealership cost. Quality was good, also had installation instructions.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Perfect fit for 2025 Honda CR-V Hybrid Sport
Size: 2023-26 CRV 2.0L Hybrid
This filter pack was a perfect fit when needing to replace the cabin and engine filter for my 2025 CR-V Hybrid. My Honda dealer wanted $140 ($70 ea.) to replace both filters while this pack only cost $30. The cabin filter was a piece of cake, but the engine filter took a bit of an effort. Nothing too crazy, though. Definitely worth the money.
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Filters
Size: 2023-26 CRV 2.0L Hybrid
Perfect fit!
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Great product!
Size: 2023-26 CRV 2.0L Hybrid
Fit my 2024 Honda CRV perfectly. Quality seems to be as good as OEM. Dealer wanted $50 for each filter plus installation. Took me 15 minutes to do both watching videos.
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Reviewed in the United States on March 6, 2026
