Pay in installments of $50.00 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jun 12 - Jun 17
For Your Every Summer RSVP, with Code: SUMMER15
Description
Harken 57mm Quad Block Swivel, Center Becket [HSB380]57mm Quad Block Swivel, Center Becket Low friction Carbo Air blocks are lightweight, strong, reliableand affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming. Features: Sheave (mm) 57 mm Sheave (in) 2 1 4 in Maximum line (mm) 10 mm Maximum line (in) 7 16 in Maximum working load (kg) 1080 kg Maximum working load (lb) 2380 lb
![Harken 57mm Quad Block Swivel, Center Becket [HSB380] Harken 57mm Quad Block Swivel, Center Becket [HSB380]](https://cdn.shopify.com/s/files/1/0611/7297/3739/products/88765XL.jpg?v=1643914604)
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
4.0 ★★★★★
Based on 2419 reviews
Sort
Product Reviews
★★★★★ 5
Works perfect for BMW S63 engine.
I used this to change the oil on my BMW M8 with the S63 engine. It was a perfect fit. It extended far enough onto the filter housing to be quite secure with no risk of slipping off and stripping the housing. It was snug on the housing and did not bind up due to having a loose fit. The tool feels well-built and I suspect it will outlive me given my occasional personal use. It would still probably hold up well even for daily shop use as long as it was not abused (repeatedly dropped, slammed around, etc).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 8, 2025
★★★★★ 5
Made well and great fit
Fits perfectly and is made well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
★★★★★ 5
Make sure you know the size
Yes worked like a charm
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026
★★★★★ 5
Great fitment, made changing the oil filter easy
Perfect fit for my m760i oil filter housing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
★★★★★ 5
s tier quality
superior quality, single cast aluminum 👍
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
![Victron Blue Smart IP22 12VDC 20A 3 Bank 120V Charger - Dry Mount [BPC122046102] Victron Blue Smart IP22 12VDC 20A 3 Bank 120V Charger - Dry Mount [BPC122046102]](https://cdn.shopify.com/s/files/1/0611/7297/3739/products/88486XL.jpg?v=1643913272)
![Harken 57mm Carbo Quad Block - Swivel [2631] Harken 57mm Carbo Quad Block - Swivel [2631]](https://cdn.shopify.com/s/files/1/0611/7297/3739/products/88766XL.jpg?v=1643914613)
![RAM Mount RAM Safe-N-Secure Locking Kit f/RAM Tough-Tray Swing Arms [RAM-234-LKU] RAM Mount RAM Safe-N-Secure Locking Kit f/RAM Tough-Tray Swing Arms [RAM-234-LKU]](https://cdn.shopify.com/s/files/1/0611/7297/3739/products/88787XL.jpg?v=1643914677)

![RAM Mount RAM No-Drill Laptop Mount f/20-21 Ford Explorer [RAM-VB-202-A-SW1] RAM Mount RAM No-Drill Laptop Mount f/20-21 Ford Explorer [RAM-VB-202-A-SW1]](https://cdn.shopify.com/s/files/1/0611/7297/3739/products/87766XL.jpg?v=1643908292)