# 875491 Big-End Bearing Kit | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta big-end bearing kit in the standard grade, weighing 0.048 kg and listed for 8 applications across MD and AQD series engines. It supersedes part number 803353, catalogued earlier as a bearing shell rather than as a kit. It heads a graded set in this run: 875492 is the 0.25 mm undersize and 875493 the 0.50 mm undersize. Order by the grade stamped on the old shells and the measured crankpin size — the published weights do not separate a graded bearing set.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta MD1B
-   Volvo Penta MD2B
-   Volvo Penta MD3B
-   Volvo Penta MD11C
-   Volvo Penta MD11D
-   Volvo Penta AQD2B
-   Volvo Penta MD17C
-   Volvo Penta MD17D

-   **Engine Family:** MD, AQD

## ⚙️ Key Features

-   Standard grade
-   0.048 kg
-   Listed for 8 applications across MD and AQD series engines
-   Supersedes 803353, catalogued earlier as a bearing shell
-   0.25 mm undersize is 875492 and 0.50 mm undersize is 875493
-   Quantity varies by assembly, most commonly two

## 🔌 Function

Carries the connecting rod on the crankpin, holding it on an oil film and transmitting the firing load to the crankshaft.

## ⚠️ Common Signs of Failure

-   Knock from mid-engine that is loudest on the overrun
-   Oil pressure down, especially hot at idle
-   Bearing material or copper flakes in the sump or filter
-   Shells scored, wiped or with the underlay showing at the parting line
-   Crankpin clearance measuring beyond limits

## 🛠️ Service Notes

-   Measure the crankpins and read the grade on the old shells before ordering — 875492 and 875493 are the undersize grades and mass is no guide between them
-   Renew the big-end bolts if they are of the stretch type, and tighten to the specified method rather than to feel

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   875491 → Supersedes 803353

### OEM / Related Numbers

-   803353 earlier number superseded by this part

## 📦 Condition

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

## Details

- **Price:** 280.26 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 280.26 AUD | In stock |

## Images

- 875491 Big-End Bearing Kit | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/875491-big-end-bearing-kit-genuine-volvo-penta)
> Updated: 2026-08-22