181105 Ball Bearing | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta ball bearing is a precision rolling-element or raceway component used in the D41B transom-shield steering/spindle bearing assembly. It is manufactured to the original Volvo dimensional, material and interface requirements so the serviced assembly retains its designed alignment, sealing, load capacity and operating reliability. In service, it supports the transom-shield spindle so the steering/drive assembly rotates smoothly with controlled radial play. Selection must be confirmed by OEM part number 181105, the exact engine/product model, serial number and installed configuration.

🚤 Compatibility

• Engine Family: MD, MB, AQ, AD, AQAD, D, TMD, BB, DP, DPX, SP, AQD, TAMD, KAD

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 181105
• Supersedes previous part number 806740
• Net weight 0.147 kg
• Fits MD, MB, AQ, AD, AQAD and D series engines and drives

🔌 Function

Supports the transom-shield spindle so the steering/drive assembly rotates smoothly with controlled radial play. Measure shaft and housing fits, renew contaminated lubricant and related seals, and install using force only through the race being fitted. Set preload or end float to the applicable Volvo Penta specification.

⚠️ Common Signs of Failure

• Rumbling or whining noise that rises and falls with shaft speed
• Detectable radial play or shaft wobble when checked by hand
• Roughness or catching as the bearing is rotated
• Excess heat at the bearing housing during operation
• Bright metal particles in the lubricant

🛠️ Service Notes

• Work clean — leave the bearing in its wrapping until the moment it goes in, and do not wash the preservative out or blow it dry with compressed air
• Apply the fitting force only to the ring being fitted, through a tube or drift that bears on that ring alone; force pushed through the balls from one ring to the other dents the raceways and the bearing will be noisy and short-lived from the first run
• Where the fit calls for it, expand the inner ring with even, controlled heat rather than driving it on, and never heat a bearing with a flame or beyond the temperature given in the workshop manual for your engine
• Check the shaft and housing seats before fitting — scoring, burrs, corrosion or a worn seat will ruin a new bearing, and fretting marks mean the seat itself needs attention
• Fit the bearing square and fully home against its shoulder, note which way round any sealed, shielded or marked face must go, and lubricate with the grease or oil specified for the application before it is turned under load

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 181105 → Supersedes 806740

OEM / Related Numbers

• 806740 earlier number superseded by this part
• 853809 spindle
• 958860 sealing ring
• 11013 ball bearing
• 914533 snap ring
• 914462 snap ring
• 844519 flywheel housing

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 500A, 501A, 501B, 570A, 740A, 430A, 431A, 290A, 500B, 571A
• Volvo Penta AD41P-B, AD41B, AD41, AD41A, AD41BJ
• Volvo Penta AQ225D, AQ225E, AQ225B, AQ225C, AQ225F
• Volvo Penta DP-D, DP-A, DP-A1, DP-B, DP-B1
• Volvo Penta AQ200D, AQ200C, AQ200B, AQ200F
• Volvo Penta AQ271A, AQ271C, AQ271B, AQ271D
• Volvo Penta MD5A, MD5B, MD5C
• Volvo Penta TAMD41B, TAMD41M-A, TAMD41A
• Volvo Penta AD31, AD31B
• Volvo Penta AQ115A, AQ115B
• Volvo Penta AQ231A, AQ231B
• Volvo Penta AQ255A, AQ255B
• Volvo Penta AQ260A, AQ260B
• Volvo Penta AQ311A, AQ311B
• Volvo Penta AQAD40B, AQAD40A
• Volvo Penta D41, D41B
• Volvo Penta MD11C, MD11D
• Volvo Penta MD17C, MD17D
• Volvo Penta MD6A, MD6B
• Volvo Penta MD7B, MD7A
• Volvo Penta SP-A, SP-A1
• Volvo Penta TMD41A, TMD41B
• Volvo Penta AQ175A
• Volvo Penta AQ190A
• Volvo Penta AQ205A
• Volvo Penta AQ211A
• Volvo Penta AQ240A
• Volvo Penta AQ290A
• Volvo Penta AQAD30A
• Volvo Penta AQD2B
• Volvo Penta AQD40A
• Volvo Penta BB740A
• Volvo Penta DPX
• Volvo Penta KAD42A
• Volvo Penta MB10A
• Volvo Penta MD1B
• Volvo Penta MD2B
• Volvo Penta MD3B
• Volvo Penta MD31A
• Volvo Penta MD67C
• Volvo Penta TAMD31B
• Volvo Penta TMD31B