# 882459 Mercruiser Upper Timing Cover | Genuine Used Part

🔧 Product Description

  

Genuine Used Cummins MerCruiser Diesel 1.7L Upper Timing Cover - Part Number: 882459

  

A genuine pre-owned Mercury Marine and Cummins MerCruiser Diesel upper timing cover for selected 1.7-litre inline four-cylinder marine diesel engines.

  

Mercury identifies 882459 as the upper timing cover. It encloses the upper timing-belt and camshaft-drive area, helping protect the belt, pulley and related timing components from loose objects and contamination.

  

⚙️ Key Features

  

• Genuine Mercury Marine used timing cover

• Correct OEM part number 882459

• Upper timing-cover configuration

• Designed for selected CMD 1.7-litre diesel engines

• Protects the timing belt and upper pulley area

• Obsolete OEM component suitable for restoration or repair

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• No verified superseding part number identified

• Mercury 882459 is listed as obsolete and no longer manufactured

  

OEM / Related Numbers:

  

• 882459

• OEM Description: Cover, Timing, Upper

• Engine Family: Cummins MerCruiser Diesel 1.7L

• Related lower cover and mounting hardware vary by engine version

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Cummins MerCruiser Diesel 1.7 MI 120 engines

• Cummins MerCruiser Diesel 1.7 MS 120 engines

• MerCruiser D1.7L DTI engines

• Inline four-cylinder compact marine diesel installations

  

Verified catalogue applications:

  

• CMD 1.7 MI 120 I/L4 - serial number 88109041 and later

• CMD 1.7 MS 120 I/L4 - serial number 8810800 and later

• D1.7L DTI - serial number 0M055000 through 0M999999

  

Important fitment note:

  

• Confirm the exact engine model and serial number.

• Upper and lower timing covers are separate components.

• Check the mounting-hole pattern, moulded clearances and inspection openings against the original.

• Fasteners, rubber grommets and lower cover are included only when shown or described.

  

🔌 Function

  

The cover shields the timing belt and upper camshaft-drive components.

  

It helps keep wiring, hoses, loose hardware and service tools away from the moving timing system.

  

Common signs of wear or damage:

  

• Cracked mounting tabs

• Broken screw bosses

• Heat distortion

• Belt-contact marks inside the cover

• Oil contamination

• Cover rattles while the engine is running

• Missing fastening points

• Salt corrosion around metal inserts

  

Recommended checks before installation:

  

• Inspect all mounting points

• Check the inside for belt-contact marks

• Confirm the cover is not warped

• Inspect the timing belt, tensioner and pulleys while access is available

• Replace damaged fasteners and grommets

• Verify belt clearance before starting the engine

  

📦 Condition

  

• Genuine Mercury Marine used part

• Pre-owned diesel-engine cover

• Cosmetic marks, fading and light contamination may be present

• Inspect all mounting tabs before installation

• Included hardware is limited to what is shown or described

• Supplied in protective or equivalent packaging

## Details

- **Price:** 50.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Timing Components | Timing Chains Gears & Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 50.00 AUD | In stock |

## Images

- 882459 Mercruiser Upper Timing Cover | Genuine Used Part
- 882459 Mercruiser Upper Timing Cover | Genuine Used Part
- 882459 Mercruiser Upper Timing Cover | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/882459-mercruiser-upper-timing-cover-genuine-used-part)
> Updated: 2026-07-12