Buy MerCruiser 3.0L TKS 135 HP Crate Engine (8M0150086 / 8M0187350) – 100% New Genuine MerCruiser Engine | JB Marine GmbH

The MerCruiser 3.0L TKS 135 HP is a fully new, factory-built crate engine, engineered for reliability, efficiency, and long-term marine performance. Perfect for replacing older 3.0L inboard or sterndrive engines (1990 and newer), this 135 HP (99.3 kW) inline-four marine engine provides smooth power, excellent fuel economy, and the legendary dependability that MerCruiser is known for.

Now available from JB Marine GmbH, your trusted European source for genuine MerCruiser propulsion systems and Quicksilver OEM parts, this new crate engine delivers professional-grade performance for sport boats, pontoons, and fishing vessels alike.

Overview: MerCruiser 3.0L TKS 135 HP Crate Engine

The MerCruiser 3.0L TKS (Turn-Key Start) 135 HP engine is a 3.0-liter (181 CID), 4-cylinder, carbureted marine engine featuring Multi-Spark Electronic Ignition, mechanical fuel pump, and flame arrestor. Built entirely with 100% new Quicksilver components, it ensures long service life, low maintenance, and optimal reliability on the water.

Engineered for seamless integration with Alpha sterndrive systems and compatible with both front and side engine mounts, it’s a perfect drop-in repower solution for nearly all 3.0L marine applications since 1990.

Key Features & Benefits

100% Brand-New Marine Engine

Unlike remanufactured or rebuilt models, this engine is built from the ground up using all-new Quicksilver components, ensuring zero run-time wear, OEM-grade performance, and factory precision.

Dependable Power & Performance

• 135 HP (99.3 kW) @ prop shaft

• Full throttle RPM range: 4400–4800

• 181 CID / 3.0L displacement for excellent torque and cruising efficiency

• Smooth and reliable operation with low vibration and noise

Advanced Construction for Longevity

Built to withstand the harshest marine environments, the engine features:

• Cast iron Quicksilver block and heads

• Large fillet radii crankshaft for superior strength

• Tri-metal bearings and hypereutectic pistons (9.3:1)

• 1.5:1 rocker arms for efficient valve timing and durability

• Hardened valve seats and Black-X stainless valves for corrosion resistance

Turn-Key Start (TKS) Carburetion System

The TKS carburetor ensures easy cold starts, improved idle stability, and smoother throttle response, perfect for fishing, cruising, and recreational boating.

Fully Equipped with Marine Components

Delivered as a partially dressed crate engine, it includes:

• Thermostat housing with 140°F thermostat

• Harmonic balancer and NGK spark plugs

• Marine distributor and ignition harness (14-pin)

• Exhaust elbow and electro-deposition coated manifold

• Audio warning horn (for overheat, low oil, and low drive lube levels)

• Sensors and shift interrupt bracket

• Serpentine belt accessory drive system

Engine Guardian Protection System

The integrated MerCruiser Engine Guardian system provides real-time engine monitoring, automatically adjusting performance in case of:

• Low oil or drive lubricant pressure

• Low seawater pressure

• Knock detection

• Low voltage or over-rev conditions

This intelligent protection ensures long-term reliability and engine safety.

Technical Specifications – MerCruiser 3.0L TKS 135 HP Crate Engine

Built for Performance & Repower Versatility

This 3.0L MerCruiser engine fits nearly all 3.0L carbureted marine engines built from 1990 onward, including Alpha sterndrive and other inboard configurations. The pilot bore is machined into the crankshaft to accommodate Volvo couplers, providing cross-brand compatibility for various propulsion systems.

Ideal for repowering sport boats, pontoons, and fishing vessels, it delivers the perfect balance of power, simplicity, and reliability, backed by the strength of Mercury Marine engineering.

Smooth, Efficient Operation

• Turn-Key Start (TKS) ensures fast ignition even in cold starts

• Thermostatically controlled cooling maintains consistent operating temperature

• Single-point drain system for easy winterization and maintenance

• Mechanical fuel pump with flame arrestor for safe, steady fuel delivery

• Crank-fired high-voltage ignition reduces misfires and improves fuel efficiency

Warranty & After-Sales Support

Each MerCruiser 3.0L TKS 135 HP Crate Engine comes with a 3-Year Limited Factory Warranty, ensuring genuine protection and long-term reliability.

When you order from JB Marine GmbH, you receive:

• Expert product selection and installation guidance

• Genuine OEM components and Quicksilver accessories

• Access to certified MerCruiser technicians and parts

• Fast, secure shipping across Europe and worldwide

We’re committed to providing professional support and authentic products that keep your vessel performing at its best.

Frequently Asked Questions (FAQs)

What boats are compatible with this engine?

It’s compatible with all inboard and sterndrive 3.0L marine engines built from 1990 and newer, including Alpha One and Volvo Penta configurations (with proper coupler).

Is this a remanufactured or new engine?

No, this is a 100% brand-new Quicksilver-built engine, not a rebuilt or remanufactured unit.

What flywheel does it require?

It requires a 14-inch flywheel. A refurbished OEM flywheel (8M0135884) is available separately.

Is this engine saltwater-ready?

Yes. With its electro-deposition coated manifold, Black-X valves, and corrosion-resistant block, it’s fully capable of operating in saltwater and freshwater environments.

Can I install this myself?

While some experienced marine technicians or owners can install it independently, professional installation is strongly recommended for proper alignment and warranty compliance.

Order Your MerCruiser 3.0L TKS 135 HP Engine from JB Marine GmbH

Upgrade or repower your vessel with the industry’s most trusted 3.0L marine engine, the MerCruiser 3.0L TKS 135 HP (8M0150086). Built with 100% new components, engineered for smooth performance, and protected by a full factory warranty, it’s the smart choice for power, reliability, and value.

Visit JB Marine GmbH today for pricing, availability, or expert consultation.
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