183512 Roller Bearing | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Roller Bearing - Part Number: 183512

This genuine Volvo Penta roller bearing is a precision rolling-element or raceway component used in the lower vertical-shaft tapered-roller 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 vertical shaft under combined bevel-gear radial and thrust loading. Selection must be confirmed by OEM part number 183512, the exact engine/product model, serial number and installed configuration.

⚙️ Key Features

• Genuine Volvo Penta OEM roller bearing

• OEM part number 183512

• Documented application: lower vertical-shaft tapered-roller bearing position

• Validated family: Volvo Penta DP-S, DPS, SX, XDP and FWD sterndrive lower gear

• Primary function: Supports the lower vertical shaft under combined bevel-gear radial and thrust loading.

• 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.

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 183512 → Supersedes 3854250 in applicable gearcases

• 3854250 (earlier OEM reference)

OEM / Related Numbers:

• 183512

Aftermarket / Verified Equivalents:

• MerCruiser/OMC 31-86748A1

• MerCruiser 31-8M0103473

🚤 Compatibility

Commonly used on:

• lower vertical-shaft tapered-roller bearing position

Typically suits:

• Engine / product models:

• DP-S

• DP-S1

• DP-SM

• DP-SMTD

• DPS-A

• DPS-B

• DPS-B1

• DPS-D

• SX-A

• SX-C

• SX-D

• SX-M

• SX-S

• XDP-B

• XDP-D3

• FWD sterndrive variants specifying 183512

• Engine / Application Family: Volvo Penta DP-S, DPS, SX, XDP and FWD sterndrive lower gear

• Serial / Configuration Note: Confirm part number 183512 against the exact drive, transmission or engine serial number, bearing location and installed shaft/housing arrangement; adjacent gear ratios and production variants may use different race dimensions or preload components.

🔌 Function

Supports the lower vertical shaft under combined bevel-gear radial and thrust loading. 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, growling, clicking or cyclic rotational noise

• Excessive radial or axial play measured at the supported shaft

• Localised heat, lubricant discolouration or burnt odour at the bearing position

• Pitting, brinelling, flaking, corrosion or scoring on rollers and raceways

• Vibration, shaft run-out or repeated seal/gear wear caused by loss of alignment

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging