# 20799762 Cylinder Head | Genuine Volvo Penta Part

## 🔧 Product Description

Complete common-rail cylinder head for TAD550/TAD750 engines, with Volvo Penta exchange cylinder head 3803975 listed as the service alternative.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TAD750GE
-   Volvo Penta TAD751GE
-   Volvo Penta TAD750VE
-   Volvo Penta TAD760VE

-   **Engine Family:** TAD
-   **HP Range:** Approximately 300 HP
-   **Year Range:** Approximately 2000s-2010s

## ⚙️ Key Features

-   OEM-machined combustion, valve and injector interfaces
-   Supports the original valves, seats, guides, injector and coolant/oil passages
-   Available with a Volvo Penta exchange service alternative where listed
-   Requires the correct graded head gasket and tightening procedure
-   All mating surfaces and reusable valve components must be inspected during installation
-   Engine type: 5.7 L and 7 L common-rail diesel

## 🔌 Function

Seals the top of the cylinders and carries the valves, injector, upper valve mechanism and internal coolant/oil passages required for combustion.

## ⚠️ Common Signs of Failure

-   Low compression, hard starting or persistent cylinder misfire
-   Coolant or oil leakage at the head joint
-   Cracked casting, damaged valve seats or injector bore
-   Recurring overheating or cylinder-head-gasket failure

## 🛠️ Service Notes

-   Check the head for cracks and check the head and block faces for flatness with a straight edge before assembly, and have any doubt about the face or the valve seats resolved before the gasket goes on
-   Clean the gasket faces with care and without scoring them — do not attack an aluminium face with abrasive discs or scrapers, and keep debris out of the bores, coolant passages and bolt holes
-   Always use a new head gasket, and tighten in the stages, sequence and torque-plus-angle steps given in the workshop manual for your engine, with the threads and mating faces clean and lubricated exactly as that manual specifies
-   Head bolts on modern engines are angle-tightened and stretch permanently, so renew them wherever the manual calls for it rather than reusing them
-   Refill and bleed the cooling system properly, then run the engine and carry out any retightening or valve clearance recheck the manual requires after the first running period

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   3803975 (Volvo Penta exchange/remanufactured cylinder head)

### OEM / Related Numbers

-   20799722 cylinder-head cap plug
-   20459962; 20580079; 20580080 inlet valve-seat references
-   20845144; 20580082; 20580083 exhaust valve-seat references
-   20412733 cap plug
-   20405897 valve guide
-   20798699 inlet valve
-   20798533 exhaust valve
-   20459855 valve-stem seal
-   20459851 valve spring
-   20840747 spring disc
-   20459857 valve cotter
-   20840807 thrust washer
-   20850047; 20850048; 20850049 graded cylinder-head gaskets

### Aftermarket / Verified Equivalents

-   SRP: CH-99762

## 📦 Condition

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

## Details

- **Price:** 9829.96 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 9829.96 AUD | In stock |

## Images

- 20799762 Cylinder Head | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20799762-cylinder-head-genuine-volvo-penta)
> Updated: 2026-10-12