183861 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 seawater-pump shaft ball-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 seawater-pump shaft and maintains impeller and seal concentricity. Selection must be confirmed by OEM part number 183861, the exact engine/product model, serial number and installed configuration.

🚤 Compatibility

• Engine Family: AQ, BB, MS, DP, SP

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 183861
• Net weight 0.163 kg
• Listed for 58 engine and drive applications
• Fits AQ, BB, MS, DP and SP series engines and drives

🔌 Function

Supports the seawater-pump shaft and maintains impeller and seal concentricity. 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 rising with shaft speed
• Radial play detectable at the shaft
• Rough or notchy rotation by hand
• Heat build-up at the bearing housing
• Bright metal particles 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

OEM / Related Numbers

• 856952 seawater pump
• 857451 seawater pump

Aftermarket / Verified Equivalents

• Orbitrade 15861
• RECMAR REC183861

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 740B, 500A, 501A, 501B, 570A, 572A, 430A, 430B, 431A, 431B, 432A, 434A, 231LB, 275A, 280B, 285A, 290DP, 570, 500B, 500, 571A, 430
• Volvo Penta DP-C, DP-C1, DP-D, DP-D1, DP-A, DP-A2
• Volvo Penta AQ225D, AQ225E, AQ225C, AQ225F
• Volvo Penta BB225A, BB225AV, BB225B, BB225C
• Volvo Penta AQ200D, AQ200C, AQ200F
• Volvo Penta BB260AV, BB260B, BB260C
• Volvo Penta SP-C, SP-A2, SP-C1
• Volvo Penta AQ231A, AQ231B
• Volvo Penta AQ255A, AQ255B
• Volvo Penta AQ260A, AQ260B
• Volvo Penta MS3B, MS3C
• Volvo Penta MS4B, MS4A
• Volvo Penta AQ175A
• Volvo Penta AQ211A
• Volvo Penta AQ290A