# 3875307 Main Bearing | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta main bearing marked Std D, from the engine group, weighing 0.07 kg and listed for 5 applications on the MD series. Std D is the standard size in grade D, as against the 0.30 mm undersize bearing 3876430 and undersize kit 3876428.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta MD7B
-   Volvo Penta MD6A
-   Volvo Penta MD6B
-   Volvo Penta MD7A
-   Volvo Penta MD67C

-   **Engine Family:** MD

## ⚙️ Key Features

-   Marked Std D - standard size
-   0.07 kg
-   5 applications on the MD series
-   Undersize alternatives are 3876430 and the kit 3876428

## 🔌 Function

Carries the crankshaft in the block, holding it in line and giving the oil film a surface to run on.

## ⚠️ Common Signs of Failure

-   Deep knock from low in the engine under load
-   Low or falling oil pressure, worst when hot
-   Bearing shells scored, copper showing through or wiped
-   Metal glitter in the oil or on the filter element
-   Crankshaft journals measured out of tolerance

## 🛠️ Service Notes

-   This is the standard size - if the crankshaft has been reground, the 0.30 mm undersize bearing 3876430 or the kit 3876428 is what is needed
-   Measure the journals and the fitted clearance rather than assuming the size, and never mix grades in one engine
-   Fit shells dry into a clean housing, oil the running face only, and torque the caps to specification

## 📦 Condition

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

## Details

- **Price:** 278.52 AUD
- **Vendor:** Volvo Penta
- **Type:** Bearings & Bushings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 278.52 AUD | In stock |

## Images

- 3875307 Main Bearing | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3875307-main-bearing-genuine-volvo-penta)
> Updated: 2026-10-12