# 27863724 Mercury MerCruiser Restrictor Gasket | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Restricted Exhaust Elbow Gasket - Part Number: 27-863724

  

Genuine Quicksilver restricted-flow exhaust elbow gasket used between the manifold and riser / elbow on MerCruiser wet-joint centre-rise exhaust systems. This partially open restrictor gasket is used on standard-cooling MerCruiser GM V6 and V8 applications where the cooling system requires restricted riser flow.

  

⚙️ Key Features

  

• Genuine Quicksilver OEM restrictor gasket

• Correct Mercury part number 27-863724

• Listing reference: 27863724

• Restricted-flow wet-joint elbow gasket

• Used on standard-cooling centre-rise exhaust systems

• Not the full-flow 27-863726 gasket and not for dry-joint exhaust systems

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 27-863724 current OEM restricted gasket reference

• 27-41313 related earlier restrictor gasket reference

• 27-41813 related earlier restrictor gasket reference where specified

  

OEM / Related Numbers:

  

• 27-863724

• 863724

• 27863724

• 27-41313

• 41313

• 27-41813

• 41813

• Restrictor gasket

• Restricted exhaust elbow gasket

• Standard cooling riser gasket

• Wet-joint riser gasket

• 27-863726 related full-flow gasket

  

Aftermarket / Verified Equivalents:

  

• Sierra: 18-0897

• Barr / Osco restricted wet-joint gasket equivalents where matched

• Recmar / RM0897 restricted riser gasket equivalent

• Aftermarket 27-863724 / 27-41313 / 27-41813 restrictor gasket replacements

• Do not substitute full-flow or block-off gaskets unless the cooling diagram requires them

  

🚤 Compatibility

  

Commonly used on:

  

• MerCruiser standard-cooling wet-joint exhaust systems

• GM V6 and V8 centre-rise manifold / riser joints

• Restricted cooling flow exhaust configurations

  

Typically suits:

  

• Engine models:

• MerCruiser 4.3L GM V6 centre-rise wet-joint exhaust applications

• MerCruiser 5.0L GM V8 centre-rise wet-joint exhaust applications

• MerCruiser 5.7L GM V8 centre-rise wet-joint exhaust applications

• MerCruiser 6.2L GM V8 wet-joint exhaust applications where specified

• MerCruiser 7.4L / 454 big-block wet-joint exhaust applications where specified

• MerCruiser 8.2L / 502 big-block wet-joint exhaust applications where specified

• MerCruiser GM V6 / V8 standard-cooling centre-rise manifolds, commonly 1981-1997 service families where 27-863724 is specified

  

• Engine Type: MerCruiser GM V6 and V8 petrol engines with wet-joint centre-rise exhaust

• System Type: Exhaust elbow / riser restrictor gasket

• Flow Type: Restricted / standard cooling

  

🔌 Function

  

The gasket seals the manifold-to-riser joint while restricting cooling-water flow through the riser passages according to the engine cooling design.

  

Common signs of failure:

  

• Rust staining around riser joint

• Exhaust leak or ticking noise

• Water leakage at gasket face

• Riser removed during exhaust service

• Wrong full-flow gasket installed in a restricted system

• Gasket crushed, split or delaminated

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 27.4 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 27.40 AUD | In stock |

## Images

- 27863724 Mercury MerCruiser Restrictor Gasket | Genuine Quicksilver OEM Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/27863724-mercury-mercruiser-restrictor-gasket-genuine-quicksilver-oem-part)
> Updated: 2026-07-18