8453A1 Mercury Driveshaft Housing | Genuine Used Part

🔧 Product Description

Genuine Mercury Long-Shaft Driveshaft Housing - Part Number: 8453A1

A genuine Mercury 20-inch long-shaft driveshaft housing for selected 7.5HP and 9.8HP portable two-stroke outboards.

The housing forms the outboard midsection between the powerhead and gearcase and encloses the driveshaft, shift linkage, exhaust passage and cooling-water tube.

⚙️ Key Features

• Genuine Mercury driveshaft housing
• Correct long-shaft part number 8453A1
• Designed for 20-inch transom installations
• Fits selected 7.5HP and 9.8HP outboards
• Structural midsection and exhaust housing

🚤 Compatibility

Commonly used on

• Mercury long-shaft portable-outboard midsections

Typically suits

• Engine models:
• Mercury 7.5HP two-stroke
• Mercury 9.8HP two-stroke
• Mercury Merc 110
• Long-shaft engines with serial family 9217756 and above where housing 8453A1 is specified
• HP Range: 7.5HP - 9.8HP
• Engine Type: Mercury twin-cylinder carburetted two-stroke outboard
• Shaft Length: 20-inch long shaft
• Year Range: Approximately 1975-1985

🔌 Function

The housing supports the powerhead above the gearcase while carrying the driveshaft, exhaust, shift linkage and cooling-water tube through the engine midsection.

⚠️ Common Signs of Failure

• Corrosion around gearcase or powerhead mounting points
• Cracks in the housing or exhaust passage
• Damaged studs or stripped threads
• Mating surfaces are distorted
• Internal water-tube or shift-linkage supports are damaged

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 8453A1 current catalogue reference for the applicable long-shaft housing

OEM / Related Numbers

• 8453A1 - long-shaft housing
• 8451A1 - related short-shaft housing
• 1558-8453A1
• 8448A2 related complete midsection component
• 7324A1 related midsection component
• 39062 related long-shaft water-outlet tube
• 39050 related adapter-plate gasket

Aftermarket / Verified Equivalents

• No aftermarket equivalent

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated