1. Used Boat Parts
  2. sku: 13315482911284633
  3. STEVENS LAKE 18-5273

STEVENS LAKE PARTS 18-5273 Tune Up Kit Thunderbolt Ignitions V8

fits model: Mercruiser.

18-5273 Stevens Lake Parts Tune Up Kit For V8 Mercruiser Thunderbolt Hei Ignitions

( Brand: Stevens Lake Parts ), ( Manufacturer Part Number: 18-5273 ), ( Compatible Equipment Make: For Aftermarket ), ( Part Type: Ignition Components ), ( Type: Electrical )

Review STEVENS LAKE PARTS Tune Up Kit V8 Thunderbolt Hei Ignitions fits MERCRUISER

Stevens 18-5273 Tune Up Kit for V8 Mercruiser Thunderbolt Ignition Systems

The Stevens 18-5273 Tune Up Kit is specifically designed for V8 Mercruiser Thunderbolt ignition systems, providing boat owners with a comprehensive solution to maintain optimal engine performance. This essential kit includes all the necessary components to perform a thorough tune-up, ensuring a smoother, more efficient operation of your watercraft engine.

The kit comes complete with eight new spark plugs, each engineered to deliver superior ignition and longer service life. These plugs feature a copper center electrode that provides excellent heat transfer and resistance to fouling, ensuring a consistent and powerful spark. In addition, the plugs are pre-gapped for easy installation and precision performance.

Moreover, the 18-5273 Tune Up Kit includes four new distributor caps. These caps ensure a proper seal and prevent the entry of moisture, debris, or contaminants into the ignition system. Each cap is designed to fit securely and snugly on the distributor, minimizing the risk of arcing and spark loss.

Furthermore, the kit includes four new rotor buttons, which work in tandem with the distributor caps to ensure smooth and efficient spark transfer between the distributor and the spark plugs. These buttons are engineered from high-quality materials that provide excellent conductivity and longevity.

Additionally, the 18-5273 Tune Up Kit includes four new points and one set of point shanks. These components are essential for the proper functioning of the ignition system, ensuring a reliable and consistent spark. The points are precision-machined to ensure a snug fit and precise contact, while the shanks provide a sturdy mounting platform for the points.

Finally, the kit includes a new condensate drain plug and a set of new gaskets. The condensate drain plug is designed to make it easy to drain excess water from the engine, preventing engine damage from water accumulation. The gaskets ensure a leak-free installation of the new components and provide a reliable seal between mating surfaces.

In summary, the Stevens 18-5273 Tune Up Kit for V8 Mercruiser Thunderbolt ignition systems is a must-have for boat owners looking to maintain the optimal performance of their engine. The kit includes all the necessary components to perform a thorough tune-up, including new spark plugs, distributor caps, rotor buttons, points, shanks, a condensate drain plug, and a set of gaskets. With this kit, you can enjoy a smoother, more efficient operation of your watercraft engine and extend its lifespan.

Stevens 18-5273 Tune Up Kit for V8 Mercruiser Thunderbolt Ignitions: A Comprehensive Analysis

Introduction:

The Stevens 18-5273 Tune Up Kit is designed specifically for V8 Mercruiser Thunderbolt Ignitions. This kit includes all the necessary components for a complete engine tune-up. In this analysis, we will discuss the key features, pros, cons, and a concluding recommendation of this product.

Key Features:

1. Contains all necessary components for a complete engine tune-up, including ignition coils, spark plugs, distributor, and distributor cap.

2. Designed for V8 Mercruiser Thunderbolt Ignitions.

3. High-performance ignition coils for improved engine performance.

4. Spark plugs are pre-gapped and pre-threaded for easy installation.

5. Distributor cap and rotor are designed for superior electrical conductivity.

Pros:

1. Comprehensive kit: The Stevens 18-5273 Tune Up Kit contains all the necessary components for a complete engine tune-up, making it a convenient and cost-effective solution.

2. Improved engine performance: The high-performance ignition coils in this kit contribute to improved engine performance, resulting in better fuel efficiency and increased power output.

3. Easy installation: The spark plugs are pre-gapped and pre-threaded, making installation a straightforward process.

4. Superior electrical conductivity: The distributor cap and rotor in this kit are designed for superior electrical conductivity, ensuring reliable ignition and improved engine performance.

Cons:

1. Potential compatibility issues: Some users have reported compatibility issues with certain V8 Mercruiser Thunderbolt Ignitions, so it is essential to double-check compatibility before purchasing.

2. Higher cost: Compared to purchasing individual components, this tune-up kit may be more expensive.

3. Limited brand options: Stevens is not as well-known as some other automotive parts manufacturers, which may deter some consumers.

Conclusion:

The Stevens 18-5273 Tune Up Kit for V8 Mercruiser Thunderbolt Ignitions offers a comprehensive solution for a complete engine tune-up. With its high-performance ignition coils, easy installation, and superior electrical conductivity, this kit promises improved engine performance and reliable ignition. However, potential compatibility issues and higher cost are factors that should be considered before making a purchase.

Recommendation:

If you own a V8 Mercruiser Thunderbolt Ignition engine and are in need of a tune-up, the Stevens 18-5273 Tune Up Kit could be an excellent choice due to its comprehensive nature and potential for improved engine performance. However, it is essential to ensure compatibility and consider the higher cost before making a purchase. If you prefer to purchase individual components or are uncertain about compatibility, you may want to explore other options from well-known automotive parts manufacturers.

Details:

Normally same day if before 1PM EST. PLEASE SAVE ALL ORIGINAL PACKAGING.!, Refer to for more details. Tune Up Kit for V8 Mercruiser Thunderbolt HEI Ignitions 18-5273. Many things can play a factor such as Location, Weather, and the items in order.

specifications vesselveep:

  • for models: Mercruiser
  • brand: Stevens Lake Parts
  • manufacturer part number: 18-5273
  • compatible equipment make: For Aftermarket
  • part type: Ignition Components
  • type: Electrical

seller vesselveep:

  • city: Lansing, Michigan
  • rating: 99.3%
  • # reviews: 148247

offer vesselveep:

  • options: Ship-to-home
  • availability: In Stock
  • best offers: True
  • quantity: 5
  • started: March 15, 2026
  • sold: 0

shipping vesselveep:

  • cost: $0.00
  • class: Expedited
  • type: Fixed
  • transit: 4-10 Days
  • service: Expedited

general vesselveep:

  • Parts Accessories > Boat Parts > Other
  • condition: New

payments vesselveep:

  • wallet: Paypal
  • credit card: Discover
  • other

returns vesselveep:

  • paid by: Seller
  • policy: Returns Accepted
  • time: 30 Days
for models: mercruiser, compatible equipment make: for aftermarket, part type: ignition components, type: electrical,
sku: 13315482911284633,

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