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SEI Marine Products

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When purchasing a product, price is the consumer's primary concern. At present, SEI Marine Products has 159 products for sale. SEI Marine Products products range in price from $5.16 to $1139, and the average price of all the products is about $174.19.

You can confidently purchase SEI Marine Products products from the seller SEI Marine Products. The brand holds an average rating of 4.6, testifying to its excellent reputation.

SEI Marine Products Best Sellers

Last Updated: Jan 10, 2026

SEI MARINE PRODUCTS - Compatible with Alpha I Gen II Stbd (Right) Trim Cylinder OE#: 815954A7

This Trim Cylinder replaces OE# 815954A7 1991 and newer
Fits the Starboard or right side of the drive.

SEI Marine Products- Compatible with Mercruiser Alpha I Gen II Bellows Kit

The SE116 Bellows Kit seals the drive to the transom.
Replaces OE#: 30-803099T1
Clamps are tridon stainless and hoses are heavy duty

SEI MARINE PRODUCTS-Compatible with Mercury Mariner Bearing Carrier 12596T2 50-150 HP 2 Stroke 4 Stroke Fits Bigfoot Models on the 50-70HP models. 4-1/4 Bullet Diameter

This bearing carrier replaces OE#: 12596T2 and fits 2 stroke inline 3 & 4 cylinder 50-125 HP and 4 stroke 50-150 HP Mercury, Mariner, and Force outboard lower units from 1987-current. It only fits Bigfoot models of the 50-70 HP Engines. 4-1/4 Bullet Diameter

SEI MARINE PRODUCTS - Compatible with Mercruiser Alpha I Gen II Port (Left) Trim Cylinder

This Trim Cylinder replaces OE# 815935A7
Fits the Port or Left Side of the Drive

SEI MARINE PRODUCTS- Gear Lube Kit

SEI MARINE PRODUCTS - Compatible with Mercruiser Bravo Port Trim Cylinder

Our 9B-121 Trim Cylinders are replacements for all Bravo I,II, and III Trim Cylinders.
This is the replacement for the port side trim cylinder.
Replaces OE#: 98703A26
Only for Mercruiser Bravo Drives. Does Not Fit Alpha Drives.

SEI Marine Products-Compatible with Mercruiser Alpha I Gen II Trim Cylinder Hardware Kit

This kit includes all of the hardware that is needed to install the 9B-116 trim cylinders.

SEI Marine Products-Compatible with Power Trim and Tilt Unit Mercury Outboard Replaces Mercury 2.5L -3.0L 2 Wire

Trim System

SEI Marine Products-Compatible with Kerr's Marine tool Heavy Duty Work Stand

SEI Marine Products-Compatible with Evinrude Johnson Gearcase Seal Kit 0396350 8 9.9 10 15 HP 2 Stroke 4 Stroke

This gearcase seal kit replaces OE#:0396350 and fits 9.9, 10 & 15 HP 2 Stroke (1974 - 2007), and 8,10 & 15 HP 4 Stroke (1995 - 2004) Evinrude Johnson outboard lower units.

SEI MARINE PRODUCTS- Compatible with Mercury Mariner 2.5L Water Pump Kit With Housing 46-96148A 8 135 150 175 200 HP 2-stroke

This water pump kit replaces OE#: 46-96148A 8, 46-42579A4 , 46-96148A5 and fits 2.0, 2.4, and 2.5L 2-stroke(135, 150, 175, 200 HP) Mercury, Mariner, and Force outboard lower units from 1979-current. This kit includes the upper housing.

SEI Marine Products-Compatible with - Mercury Mariner Gearcase Seal Kit 26-89238A2 135 150 175 200 HP V6 1979-Current

This gearcase seal kit replaces OE#: 26-89238A2 and fits 2.0, 2.4 and 2.5 liter ( 135, 150, 175, 200 HP) V6 Mercury and Mariner outboard lower units from 1979-current.
Will fit models with preload pin and without preload pin on driveshaft.
Will fit both the 4-3/4 cases as well as the 4-1/4 cases.

SEI Marine Products-Compatible with - Mercury Mariner Force Gearcase Seal Kit 26-41365A3 6 8 9.9 15 HP 2 & 4 Stroke

This gearcase seal kit replaces OE#: 26-41365A3 and fits Mercury, Mariner, and Force outboard lower units for the following applications: 6-15 hp 2 stroke 1986-2005 and 8-15 hp 4 stroke.

SEI Marine Products Front Mount Cylinder Seal Kit Compatible with OE# HS5167

Front Mount Cylinder Seal Kit
**Please read description and compatible part numbers** Below
OE# HS5167

SEI Marine Product Compatible with Mercruiser Alpha One Gen II Guide Tube Sleeve

Guide Tube Sleeve

SEI MARINE PRODUCTS-Compatible with Mercruiser Alpha One Generation I Water Pocket Cover Kit 42724A3 1972-1990

This water pocket cover kit replaces OE#: 42724A3 and fits Mercruiser Alpha One Generation I sterndrives from 1972-1990.

SEI MARINE PRODUCTS-Compatible with Yamaha Water Pump Kit 61A-W0078-83 150 175 200 225 250 300 HP 2 Stroke 4 Stroke

This water pump kit replaces OE#: 61A-W0078-83 and 61A-44311-00 and fits standard rotation and counter rotation 2.6 liter / 2 stroke ( 150, 175, 200, 225 HP), 3.1/ 3.2 liter / 2 stroke (200 HP and up) and 4 stroke (150 HP and up) Yamaha outboard lower units from 1991-current. Does NOT fit lower units with low-water pick-ups.

SEI Marine Products-Compatible with Yamaha Gearcase Seal Kit 6E5-W0001-F1-00 115 HP 130 HP 2 Stroke 4 Stroke

This gearcase seal kit replaces OE#: 6E5-W0001-F1-00 and fits Yamaha V4 (115 and 130 HP) outboard lower units. It fits 2 stroke models from 1984-current and 4 stroke models from 2000-current.

SEI MARINE PRODUCTS - Hose Kit (Compatible with Mercruiser Alpha I 15-9/16 and Bravo)

Replacement hoses for 9B-104 and 9B-121 trim cylinders.

SEI Marine Products-Compatible with OMC Stringer Upper Seal Kit 0981799 0982949 Sterndrive Upper Gearcase

This upper seal kit replaces OE #:0981799 and 0982949 and fits OMC Stringer sterndrive upper gearcases.

SEI Marine Products FAQs

Yes, SEI Marine Products is a legitmate brand on Amazon. After conducting a comprehensive analysis of 960 customer reviews for SEI Marine Products products on Amazon, we have determined its average rating. With a strong performance and good quality, SEI Marine Products has received an average rating of 4.6 from numerous buyers, indicating that SEI Marine Products are trustworthy and live up to their claims. Therefore, it is safe to make purchases from SEI Marine Products on Amazon.

Amazon has strict policies and safety measures in place that ensure only legitimate sellers and products are allowed on their platform. It also provides a secure payment gateway and offers buyer protection, ensuring your transaction is safe. In the unlikely event that there's an issue with your purchase, Amazon's customer service and return policies are designed to protect your interests.

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We analyze millions of SEI Marine Products products reviews and customer reviews to recommend the best picks for most consumers. We have a professional team with decades of experience to test the products, which can help ensure that we provide our readers with accurate advice and best recommendations.

There are usually 5 to 10 products in a brand buying guide. We found 159 SEI Marine Products products for sale, 20 of which were analyzed in detail and recommended to customers.

  1. Go to the SEI Marine Products page.
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