# 23573158 Main Bearing Kit | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta D5 / D8 0.75mm main bearing shell kit for a crankshaft journal ground 0.75 mm undersize - Positions 2, 4 and 6 - Part Number: 23573158 A genuine Volvo Penta O.S. 0.75mm crankshaft main-bearing shell pair for the split-position D5/D8 crankshaft architecture. This kit is used only at main-bearing positions 2, 4 and 6. A complete seven-journal engine requires 3 of this kit together with the matching 23573159 kit for positions 1, 3, 5 and 7.

## 🚤 Compatibility

-   **Engine Family:** TAD, D, TADH

Full model list at the end of this description.

## ⚙️ Key Features

-   Correct Volvo Penta part number 23573158
-   Bearing grade: O.S. 0.75mm
-   Position group: 2, 4 and 6
-   Complete engine uses 3 of this kit plus the matching position-group kit 23573159

## 📋 Kit Contents

-   Upper main-bearing shell for positions 2, 4 and 6 - supplied under kit number 23573158 - quantity 1
-   Lower main-bearing shell for positions 2, 4 and 6 - supplied under kit number 23573158 - quantity 1
-   Complete seven-journal engine requires quantity 3 of this kit
-   Matching kit 23573159 is required for positions 1, 3, 5 and 7

## 🔌 Function

Carries the crankshaft at main-bearing positions 2, 4 and 6 on a crankshaft machined to the 0.75 mm regrind step, the thicker shell pair restoring the correct running clearance on the reduced journal diameter.

## ⚠️ Common Signs of Failure

-   Deep rumbling from the bottom end that increases with load
-   Oil pressure dropping off at idle and slow to build from cold
-   Bearing metal appearing in the oil filter or on the sump magnet
-   Shells worn through to the backing, or scuffed at one end of the face
-   Journals measuring outside the specified size for the regrind step, or out of round

## 🛠️ Service Notes

-   Machining grade: O.S. 0.75mm.
-   Install only at positions 2, 4 and 6.
-   Use matching kit 23573159 at positions 1, 3, 5 and 7.
-   Confirm whether the engine uses crankshaft 22259957, 23499001 or another serial-specific revision before ordering.
-   Measure each journal after crankshaft machining; do not select an undersize by engine model alone.
-   These kits are split by cylinder position - this one covers positions 2, 4 and 6 and does not cover the whole engine on its own, and the companion kit for the other positions must be ordered alongside it

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   23573159 matching O.S. 0.75mm kit for positions 1, 3, 5 and 7
-   23573146 standard split-position pair
-   23573147 standard split-position pair
-   23573149 0.07mm split-position pair
-   23573150 0.07mm split-position pair
-   23573152 0.25mm split-position pair
-   23573153 0.25mm split-position pair
-   23573155 0.50mm split-position pair
-   23573156 0.50mm split-position pair
-   22259957 related crankshaft references depending on engine revision
-   23499001 related crankshaft references depending on engine revision
-   23574167-23574171 related connecting-rod bearing grades

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D8A2-A MP, D8A5-A MH, D8A6-A MH, D8A5-A MG, D8A6-A MG, D8A4-A MP, D8A1-A MP, D8A3-A MP
-   Volvo Penta TAD840GE, TAD840-43VE, TAD840GE-B
-   Volvo Penta TAD880-82GE, TAD880-84VE
-   Volvo Penta TADH880-82GE, TADH880-84VE
-   Volvo Penta TAD540-42VE
-   Volvo Penta TAD550-51VE
-   Volvo Penta TAD552VE
-   Volvo Penta TAD570-72VE
-   Volvo Penta TAD580-83VE
-   Volvo Penta TAD841-43GE
-   Volvo Penta TAD850-52VE
-   Volvo Penta TAD851-53GE
-   Volvo Penta TAD853VE
-   Volvo Penta TAD870-73VE

## Details

- **Price:** 74.88 AUD
- **Vendor:** Volvo Penta
- **Type:** Service & Repair Kits
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 74.88 AUD | In stock |

## Images

- 23573158 Main Bearing Kit | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/23573158-main-bearing-kit-genuine-volvo-penta)
> Updated: 2026-10-10