SKU: 5891116549

Allen A4258 Adjustable Stainless Steel Boom Slide - Closed Loop

Sale price$23.43 Regular price$26.03
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Description

Allen A4258 Adjustable Stainless Steel Boom Slide - Closed LoopAllen A4258 Adjustable Stainless Steel Boom Slide. This part is also compatible with all alloy tracked Super Spars Booms (not carbon versions) i. e. Part Number BS) Boom Slide Closed Loop and the Seldn Dinghy booms i. e. 2520, 2628, Olympus, 2229 and 2633 Seldn Alloy Dinghy Booms Allen A4258 ADJUSTABLE STAINLESS STEEL BOOM SLIDE PROPERTIES Number of Base Fixing Holes 1 no. Base Fixing Hole Spacing n a Overall Length 64 mm Overall Width 16 mm Overall

Allen A4258 Adjustable Stainless Steel Boom Slide. This part is also compatible with all alloy tracked Super Spars Booms (not carbon versions) i.e. Part Number BS) Boom Slide - Closed Loop - and the Seldén Dinghy booms - i.e. 2520, 2628, Olympus, 2229 and 2633

Seldén Alloy Dinghy Booms

Allen A4258 ADJUSTABLE STAINLESS STEEL BOOM SLIDE PROPERTIES

Number of Base Fixing Holes 1 no.
Base Fixing Hole Spacing n/a
Overall Length 64 mm
Overall Width 16 mm
Overall Thickness (Base Plate) 2 mm
Channel Width 16 mm
Loop Inside Diameter  15 mm
Loop Outside Diameter 25 mm
Weight 61 grams

An Engineering drawing of the boom slide A4258 from Allen can be found HERE

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SKU: 5891116549

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4.6 ★★★★★
Based on 12 reviews
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A
Verified Purchase
Amazon Customer
Carnegie, US
★★★★★ 5
Well made materials.
Arrived on time and well packaged. Good quality materials and exact fit. Perfect fit, Easy to install. Make sure to review installation instruction. Don't put the gaskets in the wrong place. Will buy again from this vender.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 17, 2025
O
Verified Purchase
Outdoorfun
Chelsea, US
★★★★★ 5
Good for the $$$
Worked great on my Mercruiser Alpha One Gen 2. Once the bottom unit of the outdrive is off and cleaned it only takes a few minutes to install impeller, seals and housing. A very affordable alternative to taking it to the shop.
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Reviewed in the United States on September 22, 2025
F
Verified Purchase
FrankieJ
Cuba, US
★★★★★ 5
Fit perfectly and very complete set of parts
Had everything I needed plus some extra parts in the kit. I probably could have just replaced the impeller for slightly less but while everything was disassembled you might as well replace the works. Included - Water Pump Impeller, Housing, Key, Face Plate, Face Plate Gasket, O-Ring, Seal Face and Carrier Assembly Oil Seal
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Reviewed in the United States on October 28, 2025
C
Verified Purchase
chris null
Omaha, US
★★★★★ 5
Water impeller kit
Worked perfectly for my ‘02 Rinker Captiva 212 with the 5.7 Mercruiser Aloha one outdrive !
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Reviewed in the United States on October 9, 2025
J
Verified Purchase
Jmac
Natrona Heights, US
★★★★★ 4
Good quality, but could have used better instructions
The kit was complete, and all the components were well made. However, if you aren't somewhat mechanical, it would be fairly easy to install the gaskets and backing plate in the wrong sequence. With better instructions, this would be a 5 star plus kit.
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Reviewed in the United States on July 31, 2025

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