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Sierra 18-5431 Rotor Assembly for MerCruiser V8 Thunderbolt Ignition

Manufacturer

Picture for manufacturer Sierra

Part Number

18-5431
13 reviews
Sale Price

$11.77

In Stock (10+)

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-5431 is a premium rotor assembly designed for MerCruiser V8 marine engines equipped with Thunderbolt IV and V electronic ignition systems. This OEM-quality replacement part includes both the rotor and trigger wheel assembly, ensuring reliable ignition performance for GM V-8 engines including 5.0L, 5.7L, and 7.4L displacements.

Key Features:

  • Direct replacement for Mercury Marine OEM part numbers 13524A1, 13524A5, and 13524T1
  • Engineered to meet or exceed original equipment specifications
  • Complete rotor and trigger wheel assembly for simplified installation
  • Compatible with GM V8 engines with Thunderbolt electronic ignition
  • Cross-references: Mallory 9-29200, GLM 71080/72880, Pro Marine 64524

Sierra International is a trusted manufacturer of marine engine components, producing high-quality replacement parts for inboard and sterndrive applications. This rotor assembly is precision-manufactured to ensure proper timing and reliable spark delivery in demanding marine environments.

Things where awesome you guys had the best price out of anyone but you should update your site as these brakes fit a lot more models than you list!!

Quick and easy

Easy to find needed parts

so far, so good

Very easy and quick. Great prices- great system- will use again!

Good so far

Great price, good e-mail communication and fast shipping. Positive experience with Autoplicity so far.

great experience, good price, item arrived within 4 days of purchase, would do business with again in future !

Great service. Item arrived very quickly and in perfect condition. Cheapest place on the net too.

Easy to deal with about shipping questions, great prices, and friendly customer service. One of the few places who says "I'll return you call" and actually does. Thanks...

SO FAR IT HAS BEEN HASSLE FREE.

ordered a K&N air filter, pretty simple. good price, timely shipping.

Autoplicity had the best price for my Thule 867 roof rack cargo bag. It was easy to pay thru my Amazon accont and the order shipped within 24 hours of my placing the order.

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