183374 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 upper vertical-shaft bearing position in the lower gear. 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 upper end of the lower-unit vertical shaft and maintains bevel-gear alignment. Selection must be confirmed by OEM part number 183374, the exact engine/product model, serial number and installed configuration.

🚤 Compatibility

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

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 183374
• Net weight 0.136 kg
• Listed for 175 engine and drive applications
• Fits AQ, MD, TMD, AD, AQAD and D series engines and drives

🔌 Function

Supports the upper end of the lower-unit vertical shaft and maintains bevel-gear alignment. 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 catching rotation by hand
• Bearing housing running hot
• 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

• Nachi: 7205B

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 100S, 110S, 740B, 500A, 501A, 501B, 570A, 572A, 740A, 430A, 430B, 431A, 431B, 432A, 434A, 230A, 230B, 231LB, 250A, 250B, 251A, 271LB, 275A, 280B, 285A, 290A, 290DP, 570, 500B, 500, 571A, 430
• Volvo Penta DP-C, DP-C1, DP-D, DP-D1, DP-E, DP-G, DP-A, DP-A2, DP-B, DP-B1
• Volvo Penta SP-C, SP-E, SP-A2, SP-C1, SP-A, SP-A1
• Volvo Penta AD31, AD31B, AD31D, AD31D-A, AD31XD
• Volvo Penta AQ225D, AQ225E, AQ225B, AQ225C, AQ225F
• Volvo Penta B230, B230E, B230F, B230FB, B230FX
• Volvo Penta AQ130C, AQ130D, AQ130A, AQ130B
• Volvo Penta AQ131A, AQ131B, AQ131C, AQ131D
• Volvo Penta AQ200D, AQ200C, AQ200B, AQ200F
• Volvo Penta AQ271A, AQ271C, AQ271B, AQ271D
• Volvo Penta BB225A, BB225AV, BB225B, BB225C
• Volvo Penta TAMD31M, TAMD31A, TAMD31B, TAMD31D
• Volvo Penta AQ151A, AQ151B, AQ151C
• Volvo Penta AQ170B, AQ170C, AQ170A
• Volvo Penta BB115A, BB115B, BB115C
• Volvo Penta BB170B, BB170C, BB170A
• Volvo Penta BB260AV, BB260B, BB260C
• Volvo Penta DPX-A, DPX-R, DPX-S1
• Volvo Penta MB20A, MB20B, MB20C
• Volvo Penta TMD31A, TMD31B, TMD31D
• Volvo Penta TMD40A, TMD40B, TMD40C
• Volvo Penta AD41B, AD41BJ
• Volvo Penta AQ115A, AQ115B
• Volvo Penta AQ125B, AQ125A
• Volvo Penta AQ145B, AQ145A
• Volvo Penta AQ171A, AQ171C
• Volvo Penta AQ205LB, AQ205A
• Volvo Penta AQ231A, AQ231B
• Volvo Penta AQ255A, AQ255B
• Volvo Penta AQ260A, AQ260B
• Volvo Penta AQ311A, AQ311B
• Volvo Penta AQAD40B, AQAD40A
• Volvo Penta AQD21A, AQD21B
• Volvo Penta MD21B, MD21A
• Volvo Penta MS3B, MS3C
• Volvo Penta MS4B, MS4A
• Volvo Penta TAMD40A, TAMD40B
• Volvo Penta TAMD41B, TAMD41P
• Volvo Penta AD30A
• Volvo Penta AD40B
• Volvo Penta AQ120B
• Volvo Penta AQ140A
• Volvo Penta AQ165A
• Volvo Penta AQ175A
• Volvo Penta AQ190A
• Volvo Penta AQ211A
• Volvo Penta AQ240A
• Volvo Penta AQ290A
• Volvo Penta AQAD30A
• Volvo Penta AQD40A
• Volvo Penta B20
• Volvo Penta BB140A
• Volvo Penta BB145A
• Volvo Penta BB165A
• Volvo Penta BB740A
• Volvo Penta D41B
• Volvo Penta KAD42B
• Volvo Penta KAMD42B
• Volvo Penta MD30A
• Volvo Penta MD31A
• Volvo Penta MD40A
• Volvo Penta TAMD30A
• Volvo Penta TAMD42B
• Volvo Penta TMD30A
• Volvo Penta TMD41B