# 807688T Mercruiser Oil Tube | Genuine Used Part

🔧 Product Description

  

Genuine MerCruiser GM V8 Oil-Fill Tube - Part Number: 807688T

  

A genuine used Mercury MerCruiser oil-fill tube for selected GM 5.0L, 5.7L and 6.2L petrol marine engines. The tube raises the engine-oil filling point to an accessible position and accepts the matching threaded oil cap. Published MerCruiser usage includes GM 350 V8 applications from the late 1990s.

  

⚙️ Key Features

  

• Genuine Mercury MerCruiser oil-fill tube

• Correct part number 807688T

• Used on GM small-block marine V8 engines

• Accepts the matching threaded oil-filler cap

• Factory bends and mounting geometry

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 807688T established Mercury oil-fill-tube reference

• No confirmed direct supersession

• 879194T09, 855457001, 8M0124127 and 8M0045749 are related but application-specific tubes

  

OEM / Related Numbers:

  

• 807688T

• 32-807688T

• 36-18710002 related threaded oil cap

• 809995 related oil-fill-side rocker cover

• 879194T09 related tube

• 855457001 related tube

• 8M0124127 related later tube

• 8M0045749 related tube

  

Aftermarket / Verified Equivalents:

  

• No verified exact branded aftermarket tube

• Used genuine MerCruiser 807688T tubes

• Custom-bent marine oil-fill tubes only when diameter, sealing and bracket geometry are reproduced

• GM marine donor-engine tubes with identical bends and fittings

• Aftermarket oil caps are available separately

  

🚤 Compatibility

  

Commonly used on:

  

• MerCruiser GM 5.0L V8 engines

• MerCruiser GM 5.7L / 350 CID engines

• Selected 6.2L / 377 CID engines using the same remote-fill arrangement

  

Typically suits:

  

• Published application includes GM 350 V8 around 1997

• Selected Gen+, EFI, MPI, TowSports and Scorpion engine packages

• Usage depends on rocker-cover side, engine-box clearance and dipstick / filler routing

• Verify the original tube number from the serial-specific diagram

  

• Engine Size: Selected 5.0L, 5.7L and 6.2L GM V8

• Component Type: Remote engine-oil filler tube

• Cap: Normally 36-18710002 or specified equivalent

• Year Range: Commonly late 1990s onward

• Fitment Requirement: Match bends, tube diameter, bracket and valve-cover seal

  

🔌 Function

  

The tube provides a clean, accessible route for adding engine oil while sealing into the rocker cover or engine filling connection.

  

Common signs of failure:

  

• Oil leak at the lower grommet or seal

• Cracked or corroded tube

• Loose mounting bracket

• Damaged cap threads

• Incorrect bend causing interference with the flame arrestor or cowling

  

📦 Condition

  

• Genuine used part

• Removed from running engine or vessel where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 40.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Rocker Covers | Valve Covers & Engine Covers

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 40.00 AUD | In stock |

## Images

- 807688T Mercruiser Oil Tube | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/807688t-mercruiser-oil-tube-genuine-used-part)
> Updated: 2026-07-20