Outdrives and Accessories - Gimbal Ring and Transom Housing Replacement Parts

Bravo Hi-Performance Swivel Shaft

This swivel shaft is made from 174-PH stainless steel and is heat treated for maximum strength. This stainless has the corrosion resistance of 304 stainless steel. By using this shaft, the life of your gimbal ring and gimbal housing seal will be greatly increased. This shaft replaces OEM #98230A1 and #866718A01.

Fits: Alpha Gen II, Bravo I, II, III

SHAFT-UPPER Mercruiser 866718A01

HP 3/8" U-Bolt Kit For Bravo Outdrives

This U-bolt exceeds OEM strength with over 6,000 pounds of tensile strength.  The U-bolt is made of 17-4 stainless steel.  The nylon insert lock nuts are made of Monel, an extremely strong material used in military applications.  The U-Bolt kit fits Bravo Gimbal Rings and is an ideal upgrade for heavier boats and those running high horsepower engines.  This upgrade will help to eliminate gimbal ring and swivel shaft failure in your Bravo outdrive.  Replaces Mercury part numbers 10-805164 (U-bolt) and 11-862903 (Nuts). Fits all Bravo Outdrives.

Hardin Marine's all new stainless steel trim cylinder end caps are the perfect addition to any Imco, Mercruiser Bravo or Alpha One application. Simple, Stunning. Highly Polished 316L Stainless Steel construction and quick, simple easy to install. Get rid of those cheap stock black plastic caps because your boat deserves better. Sure it's Jewelry or Bling, you pick the term, but isn't your boat worth it? Sold Each. Also available in packs of 4.

NOTE: DOES NOT FIT ALPHA GEN II

Hardin Marine's all new stainless steel trim cylinder end caps are the perfect addition to any Imco, Mercruiser Bravo or Alpha One application.Simple, Stunning. Highly Polished 316L Stainless Steel construction and quick, simple easy to install. Get rid of those cheap stock black plastic caps because your boat deserves better. Sure it's Jewelry or Bling, you pick the term, but isn't your boat worth it? 4-PACK.

NOTE: DOES NOT FIT ALPHA GEN II

New High Performance Mercury Urethane Ram Bushings - Kit Includes All 8 Bushings

Hardin Marine has come up with new urethane ram bushings for Bravo outdrives. They are packaged in kits. They are available in red only and are recommended for all boats running over 60 mph. Enjoy increased stability when you need it!

Each kit comes with 8 Urethane Ram Bushings.

M6 / M8 Prop Aerator Kit

This custom prop aerator kit is designed to allow air to the propeller which helps large boats with radical engines come on plane easier. In pleasure applications, the aerators take the load off of the props when maneuvering around docks, and help to prevent engine stalling when engines are shifted into gear. In race conditions, aerators improve throttle response coming out of corners or after hitting down on a big wave by instantly relieving the load off of the propellers. Hose and clamps included.

Requires drilling a 3" diameter hole in the top of the lower drive. Lower stainless piece is cut to fit and must be custom fit to your propeller.

Complete install kit for SE121 & SE128 Bravo® drives.

Mounting Kit (Bravo & Blackhawk) replaces MerCruiser part # 16755Q1

Kit Contains:

REPAIR KT-TRANSOM Mercruiser 30-803097T1

REPAIR KT-TRANSOM Mercruiser 30-803099T1

REPAIR KT-TRANSOM Mercruiser 8M0095485

Key Features:

• Sealed Gimbal Beariing

Additional Details:

• For: Bravo I/II/III (1998 & Up) s/n 0B664190 & Up
• For: Blackhawk (1994-1995) s/n 0D469859 & Up

Interchanges/Replaces

Mallory

• 9-72903
• 9-72907

Mercruiser Stern Drive

• 30-803100T1
• 8M0095485

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2753-2	GLM 89080 Mercruiser Stern Drive 31659 74639 74639A2	1	Shift Cable Bellows		N/A
18-2750	GLM 89100 Mallory 9-72703 Mercruiser Stern Drive 18654A1 32734 32734A3	1	Exhaust Bellows		N/A
18-2756	GLM 89140 Mallory 9-72702 Mercruiser Stern Drive 86840A05 86840A3 8M0062406	1	U-Joint Bellows		N/A
18-21006	Mallory 9-72415 Mercruiser Stern Drive 30-862540A04 30-862540A3 30-862540T1 30-879194A01	1	Gimbal Bearing		N/A
18-2760	GLM 89150 Mallory 9-72810 Mercruiser Stern Drive 78458 78458A1	1	Exhaust Tube		N/A
18-3603	GLM 47130 Mallory 9-73003 Mercruiser Stern Drive 32-43437 32-8M0090859	1	Water Intake Hose		N/A
18-2615	GLM 39640 Mallory 9-62604 Mercruiser Stern Drive 16755 16755A1 16755Q1	1	Outdrive Gasket Set		N/A

Transom Service Kit with Exhaust Tube & Bellows (Bravo) replaces MerCruiser part # 30-803100T1 and 8M0095485

Kit Contains:

BELLOWS KIT (Priced Each. Must be sold in quantities of 2) Mercruiser 74639Q02

TUBE ASSEMBLY-EXH Mercruiser 78458A1

Supercedes: 78458

BELLOWS Mercruiser 74639A2

Supercedes: 74639B, 74639B1

BELLOWS ASSY Mercruiser 60932A4

Supercedes: 60932A1

BELLOWS ASSY Mercruiser 816431A1

BELLOWS ASSY Mercruiser 8M0062406

Supercedes: 86840A3, 86840A05