23493469 Lower Gear | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta lower gear with a 1.69:1 ratio, weighing 89.36 kg and listed for nine applications across D series engines and DPH drives. It supersedes 22079940 - the ratio decreases in weight across this set, so weight alone is a poor guide.

🚤 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 1.69:1 ratio
• 89.36 kg
• Supersedes 22079940
• Listed for nine applications across D series engines and DPH drives
• The middle of the three lower gears by both ratio and mass
• Ratio 1.69:1 (Volvo assembly listing)

🔌 Function

Takes the drive from the vertical shaft through the 1.69:1 gear set and delivers it to the propeller shaft at the bottom of the leg.

⚠️ Common Signs of Failure

• Whining or growling from the leg that rises with speed
• Vibration through the hull that was not previously there
• Milky gear oil or a falling oil level
• Oil slick around the drive on the water
• Worn bearings and pitted gear teeth found on strip-down

🛠️ Service Notes

• The weight falls as the ratio rises across this set, so weight is a poor guide - 23493468 is the 1.59:1 gear and 23493470 the 1.85:1
• Renew the shaft seals and gear oil and pressure test the leg before the boat goes back in the water

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 23493469 → Supersedes 22079940 → Supersedes 3862814 → Supersedes 3801127

OEM / Related Numbers

• 22079940 earlier number superseded by this part
• 3862814 earlier number superseded by this part
• 3801127 earlier number superseded by this part

📦 Condition

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