# 3801704 Longblock Exch | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta remanufactured long block for the D6-400A-F, D6-435D-F and D6-435I-F, weighing 463.118 kg. Volvo Penta defines a long block as a cylinder block assembly with pistons, connecting rods, crankshaft, camshaft, cylinder heads, rocker mechanism, oil pan and valve cover, so that is the extent of what is in the crate. The catalogue lists this block in the same engine package as cylinder head 3801888, injector 3801859 and turbocharger 3801138. It is the heavier of the two D6 F-series long blocks here, 14 kg above 3801703 for the D6-300 to D6-370 engines. Supplied on exchange, so a core fee is added to the invoice and refunded once the worn block is returned.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D6-435D-F
-   Volvo Penta D6-400A-F
-   Volvo Penta D6-435I-F

-   **Engine Family:** D
-   **HP Range:** 400-435 HP

## ⚙️ Key Features

-   For D6-400A-F, D6-435D-F and D6-435I-F
-   463.118 kg
-   Block assembly with pistons, connecting rods, crankshaft, camshaft, cylinder heads, rocker mechanism, oil pan and valve cover
-   Listed with cylinder head 3801888 and turbocharger 3801138 for the same engines
-   12-month Volvo Penta warranty, 24 months when fitted by an authorised dealer
-   Also supersedes Volvo part numbers 3583170, 3801137, 3801254, 3801355, 3801379 and 3801466

## 🔌 Function

Replaces the whole reciprocating and rotating heart of the engine as one assembly, so a worn or damaged bottom end can be changed out without rebuilding it in the boat.

## ⚠️ Common Signs of Failure

-   Oil pressure low or falling away when hot
-   A deep knock from the bottom end that rises with load
-   Heavy breathing from the crankcase and oil pushed out of the filler or breather
-   Metal glitter in the oil or debris in the filter
-   Scored bores, worn shells or a cracked block found on strip-down

## 🛠️ Service Notes

-   The D6-300 to D6-370 F long block is 3801703 at 449.056 kg
-   Find and fix what destroyed the old block, oil supply and coolant condition above all, before the new one is run
-   Core deposit 3804704 carries the exchange fee and is refunded when the old block goes back

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   3801704 → Supersedes 3801493

### OEM / Related Numbers

-   3801853 earlier number superseded by this part

## 📦 Condition

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

## Details

- **Price:** 30991.4 AUD
- **Vendor:** Volvo Penta
- **Type:** Exchange & Reman Units
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 30991.40 AUD | In stock |

## Images

- 3801704 Longblock Exch | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3801704-longblock-exch-genuine-volvo-penta)
> Updated: 2026-10-12