428841 Mercury Top Cover | Genuine Used Part
428841 Mercury Top Cover | Genuine Used Part
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🔧 Product Description
Genuine Mercury Starter Motor Top Protective Cover - Part Number: 428841
A genuine used Mercury Marine upper starter cover for selected inline three-cylinder and four-cylinder two-stroke outboard motors.
The cover mounts over the top of the starter-motor assembly and protects the starter terminal, electrical connections and adjoining wiring from accidental contact and engine-compartment debris.
⚙️ Key Features
- Genuine used Mercury Marine starter top cover
- Original part number 428841
- Superseded by later cover 428842
- Used on selected 70HP to 115HP two-stroke engines
- Factory-shaped protective cover for the starter assembly
🚤 Compatibility
Commonly used on
- Mercury and Mariner inline three-cylinder and four-cylinder cylinder-block assemblies
- Oil-injected and selected non-oil-injected two-stroke outboards
Typically suits
- Engine models:
- Mercury / Mariner 70HP three-cylinder
- Mercury / Mariner 75HP three-cylinder
- Mercury / Mariner 80HP three-cylinder
- Mercury / Mariner 90HP three-cylinder
- Mercury / Mariner 100HP four-cylinder
- Mercury / Mariner 115HP four-cylinder
- 65 Jet models using the corresponding three-cylinder powerhead
- Three-cylinder serial families from approximately 0A996142 through 0G760299
- Four-cylinder serial families using cover 428841 in the cylinder-block diagram
- HP Range: Approximately 65 Jet / 70HP - 115HP
- Engine Type: Mercury / Mariner carburetted two-stroke outboard
- Year Range: Approximately mid-1980s through the 1990s
🔌 Function
The cover insulates and protects the top starter terminal and adjoining electrical connections while helping prevent tools, wiring and loose objects from contacting the live starter circuit.
⚠️ Common Signs of Failure
- Cover is missing or cracked
- Starter terminals are exposed
- Mounting point is broken
- Cover rubs against starter wiring
- Heat damage or electrical arcing is visible
- Cover no longer clips or bolts securely into position
🔄 Supersession & Cross Reference
OEM Supersession Chain
- 428842 → Supersedes 428841
- 428841 → Supersedes earlier base reference 42884
- 42884 earlier Mercury starter-cover reference
OEM / Related Numbers
- 428842
- 428841
- 42884-2
- 42884
- 42884-1
- 42884T
- Mercury starter top cover
- Related mounting screw as specified by cylinder-block diagram
Aftermarket / Verified Equivalents
- No aftermarket equivalent
📦 Condition
- Genuine used part
- Removed from running engine where applicable
- In good working condition unless otherwise stated
Shipping & Delivery
Shipping & Delivery
Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.
Returns & Warranty
Returns & Warranty
14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in the condition you received it for a refund or exchange. Full details in our Refunds & Returns policy.
Not sure this fits?
Not sure this fits?
Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.
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