# 21560112 Manifold | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Petrol V6/V8 Water-Jacketed Manifold - Part Number: 21560112

  

A heavy cast marine manifold catalogued in the Volvo Penta inlet and exhaust system for selected US-built petrol V6 and V8 engine packages. The manifold combines the exhaust-gas passage with a surrounding cooling-water jacket, allowing exhaust heat to be transferred into the engine's marine cooling circuit before the gas reaches the downstream elbow or catalyst assembly. Volvo Penta lists the component at approximately 13.607 kg and identifies the country of origin as the United States.

  

⚙️ Key Features

  

• Genuine Volvo Penta manifold

• Water-jacketed cast construction for marine exhaust cooling

• Approximate component weight: 13.607 kg

• US-manufactured Volvo Penta petrol-engine component

• Application-specific cooling, exhaust and sensor interfaces

• Designed to work with the matching opposite-bank manifold and downstream exhaust components

• Supplied as the manifold only unless the current Volvo Penta service package states otherwise

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21560112 - original catalogued manifold reference

• Volvo Penta currently marks this part as replaced by other parts; the active replacement must be selected from the complete engine serial number and exhaust specification

• Authorised Volvo Penta dealer listings also identify 21560112 as discontinued or superseded without publishing one universal replacement number

  

OEM / Related Numbers:

  

• 21560113 - companion manifold reference used in the same Volvo Penta petrol V6/V8 product group

• Associated cylinder-head-to-manifold gasket

• Associated exhaust elbow or catalyst assembly

• Associated oxygen and exhaust-temperature sensors where fitted

• Associated cooling hoses, plugs, anodes and mounting hardware

  

Aftermarket / Verified Equivalents:

  

• No documented direct aftermarket equivalent

• Standard non-catalyst 4.3 L, 5.0 L or 5.7 L Volvo Penta/OMC wet-joint manifolds are not valid substitutes unless the complete casting, cooling and emissions specification is confirmed

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta petrol V6/V8 inlet and exhaust systems

• US-built marine petrol engines using the exact 21560112 manifold casting

• Catalyst or emissions-controlled exhaust packages where the engine parts diagram specifically lists 21560112

  

Typically suits:

  

• Engine models:

• Selected Volvo Penta V6 petrol engine packages

• Selected Volvo Penta V8 petrol engine packages

• Exact engine designation, manifold bank and replacement number must be confirmed from the complete engine serial number

  

• HP Range: Engine-calibration dependent

• Engine Type: Volvo Penta US-built marine petrol V6 or V8

• Year Range: Exhaust-system generation and engine-serial dependent

  

🔌 Function

  

Collects exhaust gas from one cylinder bank and directs it toward the downstream elbow or catalyst while circulating cooling water around the casting to control exhaust temperature. Correct manifold condition is critical because an internal water-jacket breach can allow cooling water to enter an exhaust port and damage the engine.

  

Common signs of failure:

  

• External water or exhaust-gas leakage

• Soot staining around the cylinder-head flange

• Rust tracks, swelling or cracking in the casting

• Restricted cooling-water passages and rising exhaust temperature

• Misfire, difficult starting or hydrolock after cooling water enters a cylinder

• Steam, unusual exhaust vapour or water found in an exhaust port

• Oxygen-sensor or catalyst efficiency faults caused by an exhaust leak

• Warped mounting flange or repeated gasket failure

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 4308.46 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 4308.46 AUD | In stock |

## Images

- 21560112 Manifold | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21560112-manifold-genuine-volvo-penta)
> Updated: 2026-08-03