181522 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 lower-gear shaft bearing position. 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 lower-gear shaft and maintains bevel-gear alignment under propeller and gear-mesh load. Selection must be confirmed by OEM part number 181522, the exact engine/product model, serial number and installed configuration.

🚤 Compatibility

• Engine Family: AQ, BB, B, TAD, MD, MB, AQD

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 181522
• Net weight 0.136 kg
• Listed for 26 specific engine and drive applications
• Fits AQ, BB, B, TAD, MD and MB series engines and drives

🔌 Function

Supports the lower-gear shaft and maintains bevel-gear alignment under propeller and gear-mesh load. 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 that rises with speed
• Radial play detectable at the shaft
• Notchy or rough rotation by hand
• Excessive heat at the bearing location
• Bright metal flakes in the oil

🛠️ 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

Other-Brand OEM Numbers

• FAG: 6205-C-C3
• NTN: 6205C3
• SKF: 6205/C3

Aftermarket / Verified Equivalents

• ZKL: 6205 C3
• SNR: 6205 C3

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta AQ130C, AQ130D, AQ130A, AQ130B
• Volvo Penta AQ170B, AQ170C, AQ170A
• Volvo Penta BB115A, BB115B, BB115C
• Volvo Penta BB170B, BB170C, BB170A
• Volvo Penta MB20A, MB20B, MB20C
• Volvo Penta AQ115A, AQ115B
• Volvo Penta 100S, 110S
• Volvo Penta AQ165A
• Volvo Penta AQD21A
• Volvo Penta B20
• Volvo Penta BB165A
• Volvo Penta MD21A
• Volvo Penta TAD1170-72VE