23493468 Lower Gear | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta lower gear with a 1.59:1 ratio, weighing 92.99 kg and listed for nine applications across D series engines and DPH drives. It supersedes 22079936. The ratio is critical, and at over 90 kg the lift needs planning.

🚤 Compatibility

Typically suits:

• Volvo Penta D6-300A-G
• Volvo Penta D6-340A-G
• Volvo Penta D6-380A-G
• Volvo Penta DPH-E
• Volvo Penta D6-400A-G
• Volvo Penta D4-150A-G
• Volvo Penta D4-230A-G
• Volvo Penta D4-270A-G
• Volvo Penta D4-300A-G

• Engine Family: D, DPH
• HP Range: 150-400 HP

⚙️ Key Features

• Lower gear with a 1.59:1 ratio
• 92.99 kg
• Supersedes 22079936
• Listed for nine applications across D series engines and DPH drives
• The heaviest of the three lower gears
• Ratio 1.59:1 (Volvo assembly listing)

🔌 Function

Forms the bottom section of the drive, taking the vertical shaft's rotation through the 1.59:1 gear set and out to the propeller shaft.

⚠️ Common Signs of Failure

• Growling or whining from the bottom of the leg that tracks boat speed
• Vibration through the hull under load
• Gear oil milky, or water found in the drained oil
• Metal glitter on the magnetic drain plug
• Pitted or chipped gear teeth and rough bearings on strip-down

🛠️ Service Notes

• Confirm the ratio before ordering - 23493469 is the 1.69:1 lower gear and 23493470 the 1.85:1, and the three cannot be told apart by weight in any useful order
• Renew the propeller shaft seals and the gear oil on reassembly and pressure test before launching
• At over 90 kg the lift needs planning and proper support

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 23493468 → Supersedes 22079936 → Supersedes 21433428

OEM / Related Numbers

• 22079936 earlier number superseded by this part
• 21433428 earlier number superseded by this part

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging