# 21194394 Shim | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta 0.25 mm calibration shim used beneath the fuel-injection pump on D2-50F engines. Shim thickness establishes pump position and injection timing; it must be selected according to the service measurement and must not be replaced with a random washer.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D2-55F
-   Volvo Penta D2-50F
-   Volvo Penta D2-75F
-   Volvo Penta D2-60F

-   **Engine Family:** D
-   **HP Range:** 50-75 HP

## ⚙️ Key Features

-   Genuine Volvo Penta precision calibration shim
-   Thickness: 0.25 mm
-   Used for fuel-injection pump height and timing adjustment
-   One of a graded shim series
-   Measure and follow the workshop procedure before selecting thickness
-   Engine type: Volvo Penta D2 four-cylinder mechanically injected marine diesel
-   TH=0.25mm (Volvo assembly listing)

## 🔌 Function

Sets the injection-pump installed height so fuel-delivery timing remains within specification.

## ⚠️ Common Signs of Failure

-   Incorrect injection timing after pump replacement
-   Hard starting or excessive smoke
-   Reduced power or harsh combustion noise
-   Shim fretting, distortion or corrosion
-   Measured pump height outside specification

## 🛠️ Service Notes

-   Shims are supplied in graded thicknesses and exist to bring a setting into specification, so measure with a micrometer and select the thickness the setting procedure for your engine calls for rather than matching one by eye
-   Note which shim came from which position on removal and keep them identified — once an assembly has bedded in, shims are not interchangeable between positions
-   Check both faces are clean, flat and free of burrs, corrosion and old sealant before fitting; dirt trapped under a shim shifts the setting as surely as the wrong thickness does
-   Discard any shim that is dished, cracked, pitted or fretted rather than reusing it, and make sure no old shim has been left behind in the recess
-   Recheck the clearance or setting after the assembly is tightened down, because clamping load can change the measurement you took loose

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   21194396 - 0.35 mm calibration shim
-   3583764 - other graded shim references
-   3583765 - other graded shim references
-   3583766 - other graded shim references
-   3801361 - injection pump

### OEM Reman Alternatives

-   3801337 - remanufactured injection-pump references
-   3801531 - remanufactured injection-pump references

## 📦 Condition

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

## Details

- **Price:** 47.84 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 47.84 AUD | In stock |

## Images

- 21194394 Shim | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21194394-shim-genuine-volvo-penta)
> Updated: 2026-09-06