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Engineered Marine Products 300-03085 Tune Up Kit with Cap for MerCruiser V8 Thunderbolt HEI Ignition

Manufacturer

Engineered Marine Products

<h3>Engineered Marine Products: Marine-Grade Reliability for Automotive Systems</h3><p>Engineered Marine Products (EMP) brings precision engineering and marine-grade durability to the automotive aftermarket. With over 1,100 specialized components in their catalog, EMP applies the same rigorous standards required for harsh marine environments to create automotive parts that excel in demanding conditions. This manufacturer has built a reputation for producing components that withstand extreme temperatures, moisture, and vibration—qualities that translate directly to superior performance in automotive applications.</p><h3>Climate Control and Electrical Components</h3><p>One of EMP's core specialties lies in climate control system protection. Their <a href="/13199-engineered-marine-products-hvac-cut-off-switch-4209">HVAC cut-off switches</a> provide critical safety functions for heating and air conditioning systems, automatically interrupting power flow when pressure thresholds are exceeded. These switches serve as essential safeguards against compressor damage and system failures, making them indispensable for maintaining optimal cabin comfort and protecting expensive HVAC components from catastrophic failure.</p><h3>Transmission Control Technology</h3><p>Modern automatic transmissions rely on precise hydraulic control to manage gear changes smoothly and efficiently. EMP's <a href="/13199-engineered-marine-products-automatic-transmission-control-solenoid-7752">automatic transmission control solenoids</a> regulate transmission fluid pressure with exceptional accuracy, ensuring seamless shifts and optimal power delivery. These electro-hydraulic components play a vital role in transmission longevity, as proper solenoid function prevents harsh shifting, slippage, and premature wear of internal clutch packs and bands.</p><h3>Engine Cooling Solutions</h3><p>Maintaining proper engine temperature is fundamental to performance and longevity. EMP manufactures <a href="/13199-engineered-marine-products-engine-water-pump-2208">engine water pumps</a> that circulate coolant throughout the engine block, cylinder heads, and radiator system. Drawing on their marine heritage where cooling system reliability is non-negotiable, these water pumps feature durable construction with corrosion-resistant materials and precision-machined components. A failing water pump can lead to overheating and catastrophic engine damage, making quality replacement parts essential for any cooling system service.</p><h3>Engineering Philosophy</h3><p>What sets Engineered Marine Products apart is their commitment to over-engineering components for extreme conditions. Marine applications demand parts that can handle saltwater corrosion, constant vibration, and temperature fluctuations—challenges that also exist in automotive environments. This design philosophy results in parts with enhanced durability, longer service life, and greater reliability than standard replacement components. Whether you're servicing climate control systems, transmission repairs, or cooling system maintenance, EMP provides components engineered to exceed expectations.</p>

Part Number

300-03085
07/13/2036 2:16 AM
Sale Price

$26.03

2 left at this price

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Usually delivered within 2 days

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Product Details

The Engineered Marine Products 300-03085 is a complete tune-up kit with distributor cap designed for MerCruiser V8 engines ranging from 180 to 800 horsepower with Thunderbolt HEI ignition systems. This kit is specifically engineered for 1981-2001 GM and MIE V8 marine engines equipped with Thunderbolt HEI ignition.

Key Features:

  • Includes distributor cap, rotor, and cap gasket for complete ignition system service
  • Meets all OEM requirements for reliable performance
  • High-performance construction with marine-grade materials designed to withstand harsh marine environments
  • Direct replacement for Mercury 805759Q3 and Sierra 18-5273

Replaces OEM Part Numbers:

  • Mercury: 805759Q3, 805759T6, 805759T4
  • Sierra: 18-5273
  • CDI: E66-0012
  • GLM: 71780
  • Mallory: 9-29350

This tune-up kit delivers the essential ignition components your MerCruiser V8 needs to maintain peak performance and reliability, ensuring consistent spark delivery and smooth operation on the water. Regular maintenance with quality replacement parts helps prevent engine misfires, power loss, and starting problems while promoting improved fuel efficiency.

Hope I get the parts I expect some of the description is hard to interpret.

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This company had the VERY best price on the product that I was seeking. The check out process was so simple and the order shipped the next day! We will be checking them out for all our product needs!

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The information about the item I was looking for was good enough for me to confidently order.

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