# 3978758 Shim | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta shim, 0.12 mm thick, from the Engine group and listed for 21 applications across the TWD, TID, TAMD, TD and TAD series. It is the thinnest of four graded shims here, with 3978759 at 0.20 mm, 3978760 at 0.30 mm and 3978761 at 0.50 mm. The published weights across the four do not follow the thicknesses and in places invert, so order strictly by thickness.

## 🚤 Compatibility

-   **Engine Family:** TWD, TID, TAMD, TD, TAD

Full model list at the end of this description.

## ⚙️ Key Features

-   0.12 mm thick
-   Thinnest of the four graded shims in this range
-   21 applications across the TWD, TID, TAMD, TD and TAD series
-   TH=0.12mm (Volvo assembly listing)

## 🔌 Function

Takes up a measured amount of clearance in a stack so the assembly ends up within its specified setting.

## ⚠️ Common Signs of Failure

-   Measured clearance outside specification on assembly
-   Shim dished, indented or picked up on one face
-   Shim found broken or displaced in the housing
-   Noise or knock from a stack that has lost its preload

## 🛠️ Service Notes

-   Measure the gap and select the shim from the four thicknesses — 0.12, 0.20, 0.30 and 0.50 mm — rather than trusting the weights
-   Fit shims dry and clean, and re-measure after pulling the stack down

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta TAMD74P-A, TAMD74P-B, TAMD74A, TAMD74C-A, TAMD74C-B, TAMD74L-A, TAMD74L-B
-   Volvo Penta TAMD73P-A, TAMD73WJ-A
-   Volvo Penta TWD740GE, TWD740VE
-   Volvo Penta TAD730V
-   Volvo Penta TAD740GE
-   Volvo Penta TAD741GE
-   Volvo Penta TAMD71B
-   Volvo Penta TAMD75P-A
-   Volvo Penta TD71A
-   Volvo Penta TD730VE
-   Volvo Penta TID71A
-   Volvo Penta TWD710V
-   Volvo Penta TWD731VE

## Details

- **Price:** 18.94 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 18.94 AUD | In stock |

## Images

- 3978758 Shim | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3978758-shim-genuine-volvo-penta)
> Updated: 2026-09-19