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MERCRUISER 4.3 TKS - 190 HP

Model: 4.3 TKS - 190 HP

Brand: MERCRUISER

Product Specification: MERCRUISER 4.3 TKS - 190 HP Marine Engine

General Information

  • Manufacturer: MerCruiser
  • Model: 4.3 TKS
  • Type: Sterndrive Marine Engine
  • Horsepower: 190 HP
  • Displacement: 262 cubic inches (4.3 liters)

Technical Specifications

  • Engine Type: V6
  • Bore x Stroke: 4.00" x 3.48" (101.6 mm x 88.4 mm)
  • Compression Ratio: 8.6:1
  • Fuel System: Turn Key Start (TKS) carbureted
  • Fuel Requirement: Unleaded, 87 Octane minimum
  • Cooling System: Raw water cooling
  • Ignition System: Thunderbolt V Ignition System
  • Maximum RPM: 4400-4800 RPM

Dimensions and Weight

  • Length: 30 inches (762 mm)
  • Width: 28 inches (711 mm)
  • Height: 21 inches (533 mm)
  • Dry Weight: 865 lbs (392 kg)

Performance

  • Horsepower (kW): 190 HP (142 kW) @ 4400-4800 RPM
  • Torque: 260 lb-ft @ 2800 RPM

Electrical System

  • Alternator: 65-amp
  • Battery: 12V, recommended marine battery with at least 800 cold cranking amps (CCA)

Exhaust System

  • Exhaust: Through-prop exhaust
  • Manifold: Aluminum, water-cooled

Lubrication System

  • Oil Capacity: 5 quarts (4.7 liters) with filter
  • Oil Type: SAE 20W-40 MerCruiser full synthetic engine oil

Propulsion

  • Drive Type: Alpha One or Bravo One stern drive compatible
  • Gear Ratio: 1.62:1, 1.81:1, or 2.00:1 (depending on stern drive model)
  • Propshaft Horsepower: 190 HP

Additional Features

  • Anti-Drainback Fuel Pump: Prevents fuel drain-back to ensure quick starts
  • Engine Guardian System: Monitors critical engine functions and reduces power to prevent damage
  • Freshwater Cooling System: Optional
  • Emissions Compliance: Meets EPA and CARB emission standards

Warranty

  • Standard Warranty: 1 year limited warranty
  • Extended Warranty: Optional up to 5 years, includes parts and labor

Installation Requirements

  • Bilge Areas: Adequate ventilation required
  • Mounting: Engine bed and motor mounts should be compatible
  • Exhaust Through-Hull Distance: Ensure compliance with local regulations

Optional Accessories

  • Controls and Cables: Mercury Precision parts recommended
  • Gauges: SmartCraft-compatible gauges and displays
  • Power Steering: Optional power steering system available

Documentation and Support

  • Owner's Manual: Provided
  • Service Manual: Available for purchase
  • Technical Support: Available through authorized MerCruiser dealers

For more information or purchasing inquiries, please visit the official MerCruiser website or contact an authorized distributor.

This product specification listing provides essential details about the MerCruiser 4.3 TKS - 190 HP marine engine. Ensure thorough consultation with a certified marine mechanic or authorized dealer before making a purchase or installation to confirm compatibility with your marine vessel.

[Product Type: Engine]

Product Specifications

Widthin 30 in
Width 740 mm (29.13in)
Weightlb 848 lb
Weight 385 kg (848.78lbs)
Strokein 3.48 in
Stroke 88 mm (3.46in)
Rated Speed 4400 r/min
Powerkw 140 kW
Power 190 HP (141.66kw)
Lengthin 28 in
Length 696 mm (27.40in)
Heightin 21 in
Height 533 mm (20.98in)
Displacementin3 262 in3
Cylinders Arrangement/Number V6
Compression Rate 9.4:1
Borein 4.0 in
Bore 101 mm (3.98in)
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