18484A3 Cover With Decals 861314A10 5.0 Thunderbolt Mercruiser Engine Cover | Genuine Used Part

🔧 Product Description

Genuine MerCruiser 5.0L Thunderbolt Carburettor / Flame-Arrestor Cover with Decals - Part Numbers: 18484A3 / 861314A10

A genuine MerCruiser decorative induction cover supplied with the 5.0L decal set for selected carburetted GM 305 V8 sterndrive engines.

The plastic 18484A3 cover fits over the carburettor and flame-arrestor area. Decal set 861314A10 identifies the engine as a 5.0L MerCruiser package and supersedes the earlier 861314A4 decal set.

⚙️ Key Features

• Genuine MerCruiser induction-cover shell
• Cover part number 18484A3
• 5.0L decal set part number 861314A10
• Supersedes decal set 861314A4
• Suitable for selected carburetted 5.0L Bravo engines
• Protects and dresses the carburettor and flame-arrestor area

🚤 Compatibility

Commonly used on

• MerCruiser 5.0L Bravo carburetted sterndrive engines
• GM 305 CID / 5.0L V8 marine petrol engines
• Thunderbolt-ignition MerCruiser engine packages using the 18484A3 cover

Documented application

• MerCruiser 5.0L Bravo two-barrel carburetted engine
• Serial range approximately 0L015751-0M599999
• Model years approximately 1998-2001
• Engine Size: 5.0L / 305 CID
• Engine Type: GM V8 carburetted petrol sterndrive engine
• Fitment Requirement: Confirm the flame-arrestor size, mounting stud and engine serial number

🔌 Function

The cover fits over the carburettor and flame-arrestor assembly to protect the upper induction components from loose items and improve the appearance of the engine compartment.

⚠️ Common Signs of Failure

• Plastic shell is cracked around the mounting point
• Cover no longer sits securely on the flame arrestor
• Decals are faded, peeling or damaged
• Mounting stud, washer or nut is missing
• Cover has warped from engine-compartment heat

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 861314A10 → Supersedes 861314A4
• 18484A3 original carburettor / flame-arrestor cover kit
• Both the cover and original decal kit are discontinued or limited in current OEM supply

OEM / Related Numbers

• 18484A3 cover kit
• 861314A10 5.0L decal set
• 861314A4 earlier 5.0L decal set
• 805016A1 related flame arrestor on documented applications
• 863200 related flame arrestor
• 8M0113181 related cover stud
• 12-86400 related washer
• 11-826709109 related retaining nut

Aftermarket / Verified Equivalents

• Reproduction MerCruiser 5.0 Thunderbolt flame-arrestor decal kits
• Specialist used 18484A3 cover shell
• Professionally refinished original cover with replacement decals
• No verified direct aftermarket replacement cover shell

📦 Condition

• Genuine used cover with the listed decal set
• Decals may show normal age-related fading, scratches or edge wear
• Removed from running engine where applicable
• In good working condition unless otherwise stated
• Flame arrestor and mounting hardware are included only where specifically stated