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Attwood SP-37904 2" Wedge Extension Post - 13" to 19"

  • Based on 321 reviews
Condition: New
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Availability: Only 3 left in stock, order soon!
Fulfilled by Wholesale Marine

Arrives Wednesday, May 27
Order within 8 hours and 57 minutes
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Size: 24" to 30"


Style: Post


Features

  • ADJUSTABLE HEIGHT PEDESTAL: 2-3/8" diameter post adjusts from 24" to 30" for customized seating comfort
  • MARINE-GRADE ALUMINUM: Satin anodized finish resists corrosion and ensures long-lasting durability
  • INTEGRAL TYPE-B SEAT MOUNT: Provides secure fit and smooth rotation for boat seats
  • SECURE WEDGE BUSHING SYSTEM: Locks post tightly into base to prevent accidental detachment
  • ABYC CODE B COMPLIANT: Meets safety standards for boat seating hardware, offering dependable performance on the water

Description

This Attwood Wedge™ 2 3/8-Inch Extension Post provides a sturdy, dependable, and height-adjustable mounting point for a boat seat. This 2 3/8-inch-diameter Extension Post features satin anodized aluminum construction, and its height is adjustable and comes in 13 to 19 Inches and 24 to 30 Inches (each length sold separately). A locking tab reliably locks the post to the base (sold separately), and the Wedge™ bushing locks the post in with a tight, solid fit. The bushing is securely mounted to the post with 2-point stainless steel riveting. This post has an integral seat mount, and it meets ABYC Code B standards. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing of the highest quality marine products for over 100 years. We deliver safe and reliable lighting, fuel systems, water systems, seating & pedestals, swim ladders, custom upholstery, and general marine accessories that are easy to install and meet regulatory compliance.

Brand: attwood


Color: Silver


Orientation: Front and Rear and Inside


Material: Aluminum


Vehicle Service Type: Fishing Boat


Brand Name: attwood


Global Trade Identification Number: 57


Manufacturer: Attwood


UPC: 014599379157


Model Number: SP-37914


Manufacturer Part Number: SP-37914


Item Type Name: boat-seating-accessories


Included Components: Pedestal post, Integral type-B seat mount, wedge style bushing system, peripheral bearing system with crush ribs


Unit Count: 1.0 Count


Seat Width: 24 Inches


Item Weight: 2.6 Kilograms


Auto Part Orientation: Front and Rear and Inside


Compatible with Vehicle Type: Fishing Boat


Fit Type: Universal Fit


Automotive Fit Type: Universal Fit


Color: Silver


Material Type: Aluminum


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, May 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great quality
Size: 24" to 30" Style: Post
Great quality. I like my front pedestal a few inches shorter so I can full sit on my chair at lowest bevel. With the design of this shaft, I can remove the plastic piece at the bottom, cut 3 inches off and re-install the base piece.
Reviewed in the United States on December 4, 2025 by ROD SCHILTZ

  • Good fit works well
Size: 13" to 19" Style: Post
Long range of elevation. Easy installation.
Reviewed in the United States on July 2, 2024 by Tim Samuels

  • Gets me above my Xtreme bait tank.
Size: 13" to 19" Style: Post
Works perfectly to get the seat height above my bait tank. Up high when it's up front in my Tracker with the bait tank, down low in the back base to run down the lake. Swivels extremely smooth! Only thing that could make this better is if it had a lock to stop the rotation.
Reviewed in the United States on October 13, 2019 by Chris

  • Works as expected good price
Size: 24" to 30" Style: Post
Had to replace base with a wedge style that does not come in D style that is on all my other sweveleze pedestal seats. There is cross sections that allow you to cut part of the wedge base down to be used in a D base place. No mounting Bolles with the 50.00 wedge base. Have had vary good luck with my Atwood products. ... show more
Reviewed in the United States on October 18, 2024 by Mikeee1961

  • Adjustable height
Size: 24" to 30" Style: Post
Perfect for my "butt seat" in the bow of my boat. I can run the trolling motor w one foot without losing my balance
Reviewed in the United States on November 21, 2024 by Tom O. Melander

  • Not Great Product
Size: 13" to 19" Style: Post
Bought three of these in August 2024. By August 2025 the bearings gave out in one of the seats. Would not buy again.
Reviewed in the United States on September 2, 2025 by Michael Bartholomew

  • Mint!
Size: 13" to 19" Style: Post
Works mint so far....
Reviewed in the United States on August 26, 2023 by Amazon Customer

  • Had several of these and the hydraulic lift does give out. I use mine a lot and it lasts about 8 yrs
Size: 13" to 19" Style: Post
This works well easy to lift and set down. My boat is setup for these and this is the only brand I’ve used
Reviewed in the United States on June 29, 2022 by huntman

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