MerCruiser 3.0L TKS 135 PS Fully Dressed Marine Engine (8M0116646)
$8,118.00
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Description
MerCruiser 3.0L TKS 135HP Marine Engine for Sale – New 8M0116646 Inboard Sterndrive Package
The MerCruiser 3.0L TKS 135HP is one of the most trusted four-cylinder gasoline marine engines ever produced for recreational boating. Designed for dependable everyday performance, this compact propulsion system combines smooth power delivery, outstanding fuel economy, and simple maintenance, making it an excellent choice for fishing boats, pontoons, sport boats, and family cruisers.
If you’re looking for a MerCruiser 3.0L TKS 135HP for sale, this engine is an ideal solution for replacing an aging propulsion system or completing a new boat build. Its proven reliability, compact footprint, and Turn-Key-Start (TKS) technology have made it one of the most widely installed MerCruiser marine engines in North America and around the world.
At Coastal Wave Marine, we supply genuine new MerCruiser engines backed by professional technical support, worldwide shipping, and manufacturer warranty coverage, helping boat owners and marine professionals invest with confidence.
Why Choose the MerCruiser 3.0L TKS?
The MerCruiser 3.0L TKS is built for boat owners who want dependable performance without unnecessary complexity. The exclusive Turn-Key-Start (TKS) system eliminates the need to manually choke the engine during cold starts. Simply turn the ignition key, and the engine starts quickly, making every outing easier and more enjoyable.
Its inline four-cylinder design delivers excellent balance between performance and operating costs, while the carbureted fuel system offers dependable operation with straightforward servicing. Whether you’re replacing an existing engine or upgrading your vessel, this model remains one of the most popular MerCruiser replacement engines available.
Key Features & Benefits
- 135HP naturally aspirated marine gasoline engine
- Exclusive Turn-Key-Start (TKS) cold-start technology
- Proven inline four-cylinder engine platform
- Excellent fuel economy for recreational boating
- Compact engine dimensions for easy installation
- Smooth acceleration and dependable throttle response
- Compatible with MerCruiser Alpha sterndrive systems
- Ideal for repower and replacement applications
- Genuine Mercury MerCruiser engineering
The MerCruiser 3.0L TKS price depends on the engine configuration, accessories included, and shipping destination. Coastal Wave Marine provides competitive quotations tailored to your vessel and propulsion requirements.
Sterndrive Compatibility
The MerCruiser 3.0L TKS is engineered primarily for Alpha One sterndrive systems, making it an excellent option for owners replacing older MerCruiser propulsion packages while maintaining compatibility with existing drivetrain components.
Table Technical Specification
| Technical Specification | Value |
|---|---|
| Engine Model | MerCruiser 3.0L TKS |
| Mercury Part Number | 8M0116646 |
| Equivalent Part Numbers | 8M0187358 / 8M0168484 |
| Engine Type | 4-Stroke Marine Gasoline Engine |
| Maximum Output | 135 HP (99.3 kW) |
| Full Throttle RPM | 4400–4800 RPM |
| Cylinder Configuration | Inline 4-Cylinder |
| Displacement | 181 CID (3.0 L) |
| Compression Ratio | 9.3:1 |
| Bore × Stroke | 4.00 × 3.60 in (101 × 91 mm) |
| Fuel Delivery | 2-Barrel Carburetor with Turn-Key Start (TKS) |
| Ignition System | Crank-fired High Voltage Switch with Knock Control |
| Cooling System | Thermostatically Controlled |
| Accessory Drive | Serpentine Belt |
| Alternator | 65 Amp / 917 Watt |
| Water Drain System | Single Point Manual Drain (Alpha) |
| Exhaust System | Electro-deposition coated cast iron manifold with dry-joint elbow |
| Recommended Fuel | 87 Octane (Up to 10% Ethanol) |
| Recommended Oil | Mercury MerCruiser Full Synthetic 20W-40 FC-W |
| Engine Guardian Features | Knock Control, Low Oil Pressure, Low Water Pressure, Low Voltage, Over-Rev Protection |
| Dry Weight | 455 kg (1,040 lbs) |
| Dimensions (L × W × H) | 730 × 660 × 533 mm |
| Compatible Drive | MerCruiser Alpha One Sterndrive |
| Typical Applications | Fishing Boats, Pontoon Boats, Sport Boats |
Ideal Boat Applications
The MerCruiser 3.0L TKS marine engine is widely used in:
- Fishing boats
- Pontoon boats
- Sport boats
- Bowriders
- Runabouts
- Small family cruisers
- Recreational sterndrive boats
Its combination of compact dimensions, dependable performance, and economical fuel consumption makes it one of the most versatile MerCruiser boat engines available.
Why Buy from Coastal Wave Marine?
Coastal Wave Marine supplies genuine MerCruiser marine engines to customers worldwide, helping boat owners, marinas, dealerships, and marine service professionals source reliable propulsion systems with confidence.
When you choose Coastal Wave Marine, you benefit from:
- Brand-new genuine MerCruiser engines
- Factory-standard accessories
- Worldwide shipping and export documentation
- Professional technical assistance
- Repower consultation
- Secure international logistics
- Dedicated after-sales customer support
Warranty & Quality Assurance
Every MerCruiser 3.0L TKS marine engine supplied by Coastal Wave Marine includes the standard Mercury MerCruiser manufacturer warranty, providing confidence in quality, reliability, and factory-backed support.
Extended warranty options may also be available depending on your location and engine application. Every engine undergoes inspection before shipment to ensure it meets manufacturer specifications and is ready for installation.
Frequently Asked Questions
Is the MerCruiser 3.0L TKS suitable for repowering an older boat?
Yes. It is one of the most popular MerCruiser replacement engines because of its compact dimensions and compatibility with many existing Alpha sterndrive installations.
Does this engine include the Turn-Key-Start system?
Yes. The factory-installed TKS system allows simple cold starts without manually operating a choke.
Can you ship this engine internationally?
Yes. Coastal Wave Marine provides worldwide shipping and export documentation.
Is this a brand-new engine?
Yes. We supply genuine new MerCruiser marine engines with manufacturer warranty coverage.
Can I request compatibility assistance before purchasing?
Absolutely. Our technical team can verify compatibility with your existing sterndrive, transom assembly, and boat configuration.
Request a Quote & Availability
If you’re looking for a MerCruiser 3.0L TKS 135HP for sale, Coastal Wave Marine can provide current availability, competitive pricing, worldwide shipping options, and technical guidance for your installation or repower project. Whether you’re replacing an older MerCruiser engine or outfitting a new recreational vessel, our experienced team is ready to help you select the right propulsion package. Contact us today to request a personalized quote, confirm stock availability, and receive delivery options for your location.
