# 864591T02 Mercury MerCruiser Elbow Exhaust Dry Joint | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Dry Joint Exhaust Elbow - Part Number: 864591T02

  

A genuine Quicksilver dry-joint exhaust elbow / riser for MerCruiser V6 and V8 petrol engines using the centre-riser dry-joint exhaust system. This 14-degree exhaust elbow helps route exhaust gases and cooling water safely away from the engine while reducing the risk of water reversion through the dry-joint design.

  

⚙️ Key Features

  

• Genuine Quicksilver OEM dry-joint exhaust elbow

• Correct Mercury part number 864591T02

• 14-degree dry-joint centre-riser exhaust elbow

• Used on selected 4.3L V6, 5.0L, 5.7L and 6.2L V8 MerCruiser engines

• Replaces earlier 864309T01 exhaust elbow reference

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 864591T02 → Supersedes 864309T01

• 864309T01 earlier OEM exhaust elbow reference

  

OEM / Related Numbers:

  

• 864591T02

• 864591T

• 864309T01

• 864591-C casting reference

  

Aftermarket / Verified Equivalents:

  

• Sierra: 18-1845

• Recmar: REC864591T02

  

🚤 Compatibility

  

Commonly used on:

  

• MerCruiser V6 and V8 dry-joint exhaust systems

  

Typically suits:

  

• Engine models:

• MerCruiser 4.3L V6 engines with centre-riser dry-joint exhaust

• MerCruiser 5.0L V8 engines with centre-riser dry-joint exhaust

• MerCruiser 5.7L V8 engines with centre-riser dry-joint exhaust

• MerCruiser 350 MAG MPI engines with dry-joint exhaust where 864591T02 is specified

• MerCruiser 6.2L MPI engines with centre-riser dry-joint exhaust

• MerCruiser V6 / V8 GM engines with 14-degree dry-joint riser layout through 425HP where specified

• MerCruiser 2002 and newer MIE GM V8 350 / 377 CID dry-joint exhaust applications, serial 0M317000 and up where specified

  

• HP Range: V6 / V8 MerCruiser applications through 425HP where specified

• Engine Type: MerCruiser GM petrol V6 / V8

• System Type: Dry-joint exhaust elbow / riser

  

🔌 Function

  

The exhaust elbow routes exhaust gases and cooling water from the manifold into the exhaust hose while maintaining the dry-joint separation design at the manifold connection.

  

Common signs of failure:

  

• Rust staining around elbow joint

• Water leakage at the riser gasket area

• Internal corrosion or restricted water passages

• Exhaust fumes or water seepage

• Water intrusion risk from corroded exhaust elbow

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 654.25 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 654.25 AUD | In stock |

## Images

- 864591T02 Mercury MerCruiser Elbow Exhaust Dry Joint | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/864591t02-mercury-mercruiser-elbow-exhaust-dry-joint-genuine-quicksilver-oem-part)
> Updated: 2026-05-17