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Boating Accessories Mercruiser Tune Up Kit for V8 Thunderbolt HEI Ignitions 18-5273

price trends
sales rank trends
satisfaction trends
Number of Items
Boating Accessories
Prime Eligible
Not Eligible
0.770 Pounds
14.25 Inches
5.25 Inches
10 Inches
See Product Details on AmazonSee Product Details on Amazon
  • Fits GM V-8 Engines with Thunderbolt IV and V HEI ignitions
  • Interchangeable with the following: GLM 71780, Mallory 9-29350, Mercury 805759T3, 805759Q3
  • Contains 18-5431 Rotor Assembly, 18-5395 Distributor Cap
  • Each piece meets or exceeds the original equipment part it replaces
  • Fit specific, check part numbers to ensure proper fit
Sierra products are engineered to meet today’s high horsepower engine demands and stand up in the harsh marine environment. All Sierra products meet or exceed the original equipment part it replaces. Sierra supplies many OEM engine manufacturers and boat builders hundreds of quality parts every day
Customer Feedback
the good
the ok
the bad
green quote
Perfect fitting replacement.
green quote
Fitment was good.
green quote
Works good.
green quote
Good quality.
green quote
Perfect replacement for my 2001 Tige 21v with the 5.7 350 MPI.
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Category: Automotive Replacement Ignition Tune-Up Kits

The usual price range for an automotive replacement ignition Tune-Up kit is between $27.44 to $203.07.

If you want to know about automotive replacement ignition Tune-Up kits in general, please go to our Automotive Replacement Ignition Tune-Up Kits: Things to Know Before Buying in 2020 page to learn more!

Editorial Reviews

Jane's Review: Should I buy this product?

Jane's Review

Yes! I recommend this automotive replacement ignition Tune-Up kit based on manufacturer ratings. Let's go over the reasons why buying this automotive replacement ignition Tune-Up kit now is a good idea, and also things to consider before you decide on this item.

1. Manufacturer has very positive reviews on all their products!

The maker of a product is another factor you want to definitely consider before you buy anything. What if there is a piece missing or there is some defect in the product? With anything you buy online, there is a small chance of this happening. But don't worry too much, because Amazon has an amazing 30-day refund policy (Amazon❤️). Still, you want to make sure that the manufacturer or the seller has been helpful in resolving this kind of problem and/or has been helpful to its customers about general product inquiries. As you see in my manufacturer report below, Teleflex Marine (Boating Accessories) has very positive reviews for their products. It's generally a good sign if the manufacturer has good reviews overall. If your purchase decision heavily involves how well they make their products and treat their customers, this is likely a safe bet.

2. This automotive replacement ignition Tune-Up kit has positive reviews on the internet

Some people have a great experience with a product, while some are unlucky and get a defected item and have to go through the whole process of returning them. Since people have different experiences about a product due to various reasons, don't read too much into one good or bad review. Reading multiple reviews with different ratings can help you picture how good/bad the product generally is.

This automotive replacement ignition Tune-Up kit has positivereviews on the internet, and based on current trends, it's likely that people will like this automotive replacement ignition Tune-Up kit more a week later. I summarized what fans and haters say about this product above in the good/ok/bad table, so don't forget to read those since they paint the whole picture! And of course, if you want to read more detailed reviews, many of them are on Amazon!See More Reviews on AmazonSee More Reviews on Amazon

3. The price might go up, so buy now if you need this!

image/svg+xml Highest Price Lowest Price $32.73 $22.52

Price is one of the most important factors in making a purchase decision. I analyzed the price of this product in four parts: its recent price change, when it was most expensive/cheapest, its price volatility, and a price prediction I made, just in case you want to wait.

First off, let's talk about its recent price change. The price of this product has not changed from April 21, 2020 to May 20, 2020, which means that it has steady and healthy supply!

Next, we need to look at its highest price and lowest price. Historically, the highest price point for this automotive replacement ignition Tune-Up kit was $32.73, and the lowest price point was $22.52. The current price is nearly the highest it has ever been. If the best price is what you're after, now isn't exactly a good time to buy this automotive replacement ignition Tune-Up kit.

What about its availability and price volatility? This is another aspect we have to dig into before buying something. I haven't seen this product being unavailable since I started reviewing this product. So as far as the availability goes, this product is solid. If you plan to make a repeat purchase of this kind of item, this is your product! In addition, the price tends to stay more or less the same. Not a lot of price movement is expected, but the price could still move in either direction by a smidge.

Considering all this, will the price go up or down in a week? Based on past price points, I expect the price to be $33.81 a week from now. It might be best to purchase as soon as possible before the price becomes too high.

Check Current Price on AmazonCheck Current Price on Amazon

4. Make sure Sierra International is a brand you can trust

Sierra International is a fairly popular brand among other automotive replacement ignition Tune-Up kit brands. But I couldn't find any YouTube videos, Reddit posts, or news articles that directly mention this product, but this can be just me not looking hard enough. Will update this when I have more info!

One thing to be careful about here is that I'm not verifying if this product's maker is a household name or not. This section is more focused on whether this is proven enough by its consumers, whether people actually love this product.

5. There are other options, but don't look further if you're looking for the most popular product

image/svg+xml Sierra International Other similar brands: TBK Timing Belt Kit JEM&JULES

I found 2 brands that have similar products like this one: TBK Timing Belt Kit and JEM&JULES. 'If you're looking for a cheaper alternative, you might want to look at a similar product from JEM&JULES. If you're looking for a automotive replacement ignition Tune-Up kit with best reviews, a product from TBK Timing Belt Kit gets the best score on the internet. If your primary concern is whether the product is popular and well known, you probably can't find a better one than the current product you're looking at. I linked all the similar products in the similar products section so please check them out! Or you can check other similar products on Amazon, too.

See Similar Products on AmazonSee Similar Products on Amazon

That's it! I hope you learned enough about this product to make a purchase decision now. You can always ask me about anything via the bird button on the bottom right corner. Thanks for reading — I'm going to add more analyses on this review, so stay tuned!

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