Sierra Transom Seal Kit 18-2601-1, Replaces 30-803097T1, Fits Mercury R, MR, Alpha One (1983-90) and Alpha One SS (1986-89)

The Sierra 18-2601-1 Transom Seal Kit is a complete stainless steel gimbal bearing and bellows service kit for sterndrive units. It restores a watertight, corrosion-resistant seal at the transom assembly where the drive shaft, exhaust, and U-joint pass through the boat's hull, an area that must be replaced on a regular service interval to prevent water intrusion into the bilge or gearcase.

This kit contains a Sierra 18-2100 Gimbal Bearing (cross-referencing O.E. Numbers 30-60794A4 and 30-60794A2) and a Sierra 18-2751 U-Joint Bellows (cross-referencing O.E. Number 60932A4), each supplied in the correct quantity of one for a single transom service job. Components are manufactured in round, stainless steel construction for corrosion resistance in the marine environment.

The 18-2601-1 kit is designed to replace Mercury/Mercruiser part number 30-803097T1. It fits Mercury R, MR, and Alpha One sterndrives (1983-90) with serial numbers 6225577 and up, as well as Alpha One SS sterndrives (1986-89) with serial numbers OA 545004 and up.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2601-1
• Weight: 5.35 pounds
• Material: Stainless Steel
• Item Shape: Round
• UPC: 808282186661
• Package Quantity: 1
• Kit Contents - Gimbal Bearing: Sierra 18-2100 (O.E. 30-60794A4, 30-60794A2), Qty 1
• Kit Contents - U-Joint Bellows: Sierra 18-2751 (O.E. 60932A4), Qty 1

Fitment

• Mercury R, MR, Alpha One (1983-90), S/N 6225577 & Up
• Mercury Alpha One SS (1986-89), S/N OA 545004 & Up

Replaces (OEM)

• 30-803097T1

Frequently Asked Questions

What does the Sierra 18-2601-1 Transom Seal Kit include? The kit includes a Sierra 18-2100 Gimbal Bearing (cross-referencing O.E. Numbers 30-60794A4 and 30-60794A2) and a Sierra 18-2751 U-Joint Bellows (cross-referencing O.E. Number 60932A4), each supplied in a quantity of one.

What Mercury drives does the 18-2601-1 fit? It fits Mercury R, MR, and Alpha One sterndrives (1983-90) with serial numbers 6225577 and up, and Mercury Alpha One SS sterndrives (1986-89) with serial numbers OA 545004 and up.

What OEM part number does the Sierra 18-2601-1 replace? The Sierra 18-2601-1 Transom Seal Kit replaces OEM part number 30-803097T1.

What material is the 18-2601-1 kit made from? The components in the 18-2601-1 Transom Seal Kit are made of stainless steel with a round shape, providing corrosion resistance in marine service.

How much does the Sierra 18-2601-1 Transom Seal Kit weigh? The 18-2601-1 Transom Seal Kit weighs 5.35 pounds.

Is the gimbal bearing in this kit sold separately? The gimbal bearing included in the 18-2601-1 kit is Sierra part number 18-2100, cross-referencing O.E. Numbers 30-60794A4 and 30-60794A2; it is packaged here as part of the 18-2601-1 Transom Seal Kit.

What U-joint bellows does the 18-2601-1 kit contain? It contains a Sierra 18-2751 U-Joint Bellows, which cross-references O.E. Part number 60932A4.

How many of each part are in the transom seal kit? The 18-2601-1 kit contains one gimbal bearing and one U-joint bellows, matching the package quantity of one kit per unit sold.

Does my serial number matter when ordering the 18-2601-1 kit? Yes. The kit fits Mercury R, MR, and Alpha One drives (1983-90) starting at serial number 6225577, and Alpha One SS drives (1986-89) starting at serial number OA 545004, so confirm your drive's serial number falls within these ranges before ordering.

Is the 18-2601-1 a genuine Sierra part? Yes, 18-2601-1 is the Sierra manufacturer part number for this Transom Seal Kit.

What is the UPC for the Sierra 18-2601-1 kit? The Sierra 18-2601-1 Transom Seal Kit has UPC 808282186661.