181413 Needle Roller Bearing | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta needle roller bearing is a precision rolling-element or raceway component used in the legacy marine transmission/drive needle-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. Standard bearing designation K 25 × 31 × 17. 25 mm bore × 31 mm outside diameter × 17 mm width. In service, it provides a caged needle-roller running element between a 25 mm shaft and 31 mm housing bore. Selection must be confirmed by OEM part number 181413, the exact engine/product model, serial number and installed configuration.

🚤 Compatibility

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

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 181413
• Needle roller bearing, caged assembly
• Net weight 0.079 kg
• Fits MD, MB, AQ, BB, B and AQD series engines and drives

🔌 Function

Provides a caged needle-roller running element between a 25 mm shaft and 31 mm housing bore. 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 noise from the bearing position
• Scoring or indentation of the shaft surface
• Rollers loose, flattened or missing from the cage
• Increased play or vibration at the shaft
• Fine steel debris in the lubricant

🛠️ Service Notes

• Press needle roller bearings in with a correctly sized mandrel — never drive them with a hammer, and never strike the cage or the shell directly
• Press on the marked end face of the shell and keep the bearing square to the bore; a drawn cup that tilts as it enters is scrap
• Check the bore and shaft for wear, scoring and size before fitting, and make sure both are spotlessly clean, as a needle bearing has no tolerance for grit
• Press to the depth called for by the workshop procedure rather than driving it hard up against a shoulder
• Leave the protective grease in place until fitting, handle the needles with clean hands only, and prime the bearing with the lubricant specified for that assembly before it goes into service

🔄 Supersession & Cross Reference

Other-Brand OEM Numbers

• Schaeffler/INA K25X31X17

📦 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 MD5A, MD5B, MD5C
• Volvo Penta AQ115A, AQ115B
• Volvo Penta MD11C, MD11D
• Volvo Penta MD17C, MD17D
• Volvo Penta MD6A, MD6B
• Volvo Penta MD7B, MD7A
• Volvo Penta 100S, 110S
• Volvo Penta AQ165A
• Volvo Penta AQD2B
• Volvo Penta AQD21A
• Volvo Penta B20
• Volvo Penta BB165A
• Volvo Penta MB10A
• Volvo Penta MD1B
• Volvo Penta MD2B
• Volvo Penta MD21A
• Volvo Penta MD3B
• Volvo Penta MD67C