181800 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 D3 seawater-pump and selected alternator bearing positions. 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. Standard sealed deep-groove bearing designation 6203-2RSH. In service, it supports the seawater-pump or alternator shaft with sealed deep-groove rolling contact. Selection must be confirmed by OEM part number 181800, the exact engine/product model, serial number and installed configuration.

🚤 Compatibility

• Engine Family: D, MD, TMD, MB, AQ, BB, TD, B, AQD
• HP Range: 110-220 HP

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 181800
• Supersedes previous part number 825890
• Net weight 0.070 kg
• Fits D, MD, TMD, MB, AQ and BB series engines and drives

🔌 Function

Supports the seawater-pump or alternator shaft with sealed deep-groove rolling contact. 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

• Whining or rumbling in step with speed
• Shaft play detectable by hand
• Notchy or rough rotation
• Bearing housing running hot
• 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

• 181800 → Supersedes 825890

OEM / Related Numbers

• 825890 earlier number superseded by this part
• 21141637 D3 seawater pump

Other-Brand OEM Numbers

• SKF 6203-2RSH
• SKF: 6203-2RSJ
• Timken: 203DD

Aftermarket / Verified Equivalents

• JMP JSK0094/JSK0100 major repair kits
• JMP BER0045
• SNR: 6203F474

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D3-110I-B, D3-110I-C, D3-130I-C, D3-220I-G, D3-130A-A, D3-160A-A, D3-130A-B, D3-160A-B, D3-130A-C, D3-160A-C, D3-140A-D, D3-170A-D, D3-200A-D, D3-220A-D, D3-140I-D, D3-140A-E, D3-170A-E, D3-200A-E, D3-220A-E, D3-140I-E, D3-140A-F, D3-170A-F, D3-200A-F, D3-220A-F, D3-140I-F, D3-140A-G, D3-170A-G, D3-200A-G, D3-220A-G, D3-140I-G, D3-190A-B, D3-190A-C, D3-190I-A, D3-110I-A, D3-130I-A, D3-160I-A, D3-110I-D, D3-150I-D, D3-170I-D, D3-200I-D, D3-220I-D, D3-110I-E, D3-150I-E, D3-170I-E, D3-200I-E, D3-220I-E, D3-110I-F, D3-150I-F, D3-170I-F, D3-200I-F, D3-220I-F, D3-110I-G, D3-150I-G, D3-170I-G, D3-200I-G, D3-110I-H, D3-160I-C, D3-190I-B, D3-190I-C, D3-140A-H, D3-170A-H, D3-200A-H, D3-220A-H, D3-130I-B, D3-160I-B, D3-150I-H, D3-170I-H, D3-200I-H, D3-220I-H, D3-140I-H
• Volvo Penta D7A-B TA, D7A-T, D7A-TA, D7C-B TA, D7C-TA
• Volvo Penta AQ130C, AQ130D, AQ130A, AQ130B
• Volvo Penta AQ170B, AQ170C, AQ170A
• Volvo Penta BB115A, BB115B, BB115C
• Volvo Penta BB170B, BB170C, BB170A
• Volvo Penta D5A-B TA, D5A-T, D5A-TA
• Volvo Penta MB20A, MB20B, MB20C
• Volvo Penta MD100A, MD100B, MD100B-CC
• Volvo Penta AQ115A, AQ115B
• Volvo Penta AQD21A, AQD21B
• Volvo Penta D100A, D100B
• Volvo Penta MD2010, MD2010B
• Volvo Penta MD21B, MD21A
• Volvo Penta 100S, 110S
• Volvo Penta TD100A, TD100AG
• Volvo Penta AQ165A
• Volvo Penta AQD2B
• Volvo Penta B20
• Volvo Penta BB165A
• Volvo Penta MB10A
• Volvo Penta MD1B
• Volvo Penta MD2B
• Volvo Penta MD3B
• Volvo Penta TMD100A