Mercury Tappet Bucket – 8M0142491

The Mercury Tappet Bucket 8M0142491 is an essential OEM part for maintaining proper valve clearance and smooth engine timing in your Mercury marine engine. Crafted for durability and precision, this tappet bucket ensures optimal camshaft-to-valve interaction, helping your engine run quietly, efficiently, and with reduced wear over time.

Key Features

Genuine Mercury Marine Part – Identified by part number 8M0142491 for accurate OEM replacement

Hardened Construction – Engineered to withstand friction, heat, and continuous motion

Precision Fitment – Ensures exact spacing and consistent valve timing

Reduced Wear and Noise – Minimizes friction between cam lobes and valves

Optimized for Marine Engines – Designed specifically for harsh marine operating environments

Compatibility

The Mercury Tappet Bucket 8M0142491 is compatible with select Mercury and MerCruiser 4-stroke outboard engine models. To confirm fitment for your specific engine, refer to your Mercury service manual or check your engine's model and serial number.

Ideal Use Cases

Rebuilding valve train assemblies during scheduled maintenance

Replacing worn tappet buckets to restore proper valve lash

Ensuring quiet engine operation and optimal fuel efficiency

Preventing cam lobe or valve stem damage caused by worn buckets

Why Valve Train Precision Matters

Valve clearance affects how smoothly and efficiently your engine runs. A worn or out-of-spec tappet bucket can lead to engine noise, performance loss, and premature component wear. Installing a genuine Mercury Tappet Bucket 8M0142491 helps ensure your engine’s valve system operates as designed—with proper lift, timing, and longevity in mind.

Frequently Asked Questions

How do I know if my tappet bucket needs replacing?

Signs include ticking noises from the valve area, inconsistent valve clearance measurements, or visible wear during inspection.

Can I replace a single tappet bucket or should I replace the full set?

It’s best practice to inspect the full set. If multiple show wear, replacing the complete set ensures balanced performance.

Is this bucket pre-lubricated for installation?

Always apply fresh engine oil to the tappet bucket before installation to ensure smooth startup and avoid dry contact with the camshaft.