# 21145974 Cover | Genuine Volvo Penta Part

## 🔧 Product Description

Brand-new genuine Volvo Penta oil-filter-housing cover for the later housing 17365933 used on selected TAD1140VE-TAD1142VE installations. The cover seals the revised housing port and is distinct from cover 21145973.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D11C1-A MP
-   Volvo Penta D11C3-A MP
-   Volvo Penta D11C2-A MP
-   Volvo Penta D11C4-A MP
-   Volvo Penta D11B3-A MP
-   Volvo Penta D11B4-A MP
-   Volvo Penta D11B2-A MP
-   Volvo Penta D11B1-A MP
-   Volvo Penta TAD1170-72VE

-   **Engine Family:** D, TAD

## ⚙️ Key Features

-   Later housing-version cover
-   Matched to housing 17365933
-   Uses the specified gasket/X-ring arrangement
-   Exact bolt and gallery geometry for the revised housing
-   Cover only
-   Engine type: Volvo Penta 10.8-litre industrial diesel

## 🔌 Function

Seals the revised oil-filter housing passage and maintains the designed gallery flow and pressure.

## ⚠️ Common Signs of Failure

-   External oil leak
-   Incorrect cover/housing combination
-   Damaged gasket face
-   Loose or stripped fasteners
-   Pressure loss following housing service

## 🛠️ Service Notes

-   Clean both sealing faces back to clean metal and check the cover for distortion, cracks or pulled bolt holes before refitting — a warped flange will not seal even with a new gasket
-   Where the joint uses a gasket, seal or O-ring, always fit a new one and seat it dry unless the workshop manual for your engine specifies a sealant; never try to make a poor joint tight with extra sealant
-   Tighten the fasteners progressively and evenly, working out from the centre, to the figure given in the manual for your engine — pressed steel, alloy and plastic covers distort easily if pulled down hard or unevenly
-   If the cover carries a shaft seal or bearing, support it square to the shaft as it goes on so the seal lip is not nicked or rolled over
-   Check that any breather, drain or oil return passage in the cover is clear before final tightening, and look for leaks once the engine has been run up to temperature

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   21145974 → Supersedes 21137476

### OEM / Related Numbers

-   21137476 earlier number superseded by this part
-   Housing 17365933
-   Housing gasket 20882218
-   X-ring 993235
-   Companion cover 21145970

### Other-Brand OEM Numbers

-   VOE21145974

## 📦 Condition

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

## Details

- **Price:** 159.48 AUD
- **Vendor:** Volvo Penta
- **Type:** Oil & Lubrication
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 159.48 AUD | In stock |

## Images

- 21145974 Cover | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21145974-cover-genuine-volvo-penta)
> Updated: 2026-09-19