184778 Needle Roller Bearing | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Needle Roller Bearing - Part Number: 184778

This genuine Volvo Penta needle roller bearing is a compact needle-roller bearing designed to carry high radial load in a restricted shaft or housing position used in the DPH/DPR lower-gear vertical-shaft and gear-set support. It is manufactured to the original Volvo Penta 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-gear shaft with a compact high-load needle bearing while controlling radial movement inside the gearcase. Selection must be confirmed by OEM part number 184778, the exact engine or product model, serial number and installed configuration.

⚙️ Key Features

• Genuine Volvo Penta OEM needle roller bearing

• OEM part number 184778

• Application: DPH/DPR lower-gear vertical-shaft and gear-set support

• Engine / drive family: Volvo Penta DPH and DPR Aquamatic drives

• Primary function: Supports the lower-gear shaft with a compact high-load needle bearing while controlling radial movement inside the gearcase.

• Protect the thin outer shell during pressing, lubricate before assembly and renew the mating shaft or inner race if it is worn.

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 184778 (current/original OEM service reference)

OEM / Related Numbers:

• 184778

• 21821908 gear set

• 190836 0.15 mm shim

• 983161, 983162 and 983163 shims

Aftermarket / Verified Equivalents:

• Recmar: REC184778

🚤 Compatibility

Commonly used on:

• DPH/DPR lower-gear vertical-shaft and gear-set support

Typically suits:

• Engine / product models:

• DPH-A, DPH-B

• DPR-A, DPR-B

• Engine / Application Family: Volvo Penta DPH and DPR Aquamatic drives

• Serial / Configuration Note: Renew damaged mating races and set the shaft clearance with the specified shim combination.

🔌 Function

Supports the lower-gear shaft with a compact high-load needle bearing while controlling radial movement inside the gearcase. Protect the thin outer shell during pressing, lubricate before assembly and renew the mating shaft or inner race if it is worn.

Common signs of failure:

• Needle rumble, clicking or roughness during shaft rotation

• Excessive radial play or visible shaft movement

• Pitted, broken or skewed needle rollers

• Scoring or blue heat marks on the shaft or inner race

• Metal debris, seal leakage or gear misalignment caused by bearing wear

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging