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18-5431 Sierra Rotor Assembly

Model # 138109 Mfg # 18-5431
4.1 out of 5 Customer Rating
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Orders placed by 3 PM EST typically ship the same day. Orders placed after this time will be processed the next business day.
Sale Clearance
18-5431 Sierra Rotor Assembly
Model # 138109 Mfg # 18-5431
4.1 out of 5 Customer Rating
Advice & How-To
Orders placed by 3 PM EST typically ship the same day. Orders placed after this time will be processed the next business day.
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SIERRA 18-5431 Rotor Assembly
Ensure reliable engine performance on the water with the SIERRA 18-5431 Rotor Assembly. This high-quality part meets OEM specifications, making it a trusted choice for boaters needing dependable ignition components.

  • Precision Fit for GM V-8 Engines: Specifically designed for GM V-8 engines with Thunderbolt IV & V Ignition, providing consistent performance and easy installation.
  • OEM Quality Standards: Built to meet or exceed original equipment manufacturer (OEM) specifications for reliable operation and longevity.
  • Interchangeable Part Numbers: Compatible with a range of models, including GLM 71080, Mallory 9-29200, and multiple Mercruiser Stern Drive models (13524A5, 13524T1, 13524A1, 19405A3, 90576A2).
  • Durable Construction: Manufactured with high-grade materials for durability in marine environments, ensuring long-lasting performance.

The SIERRA 18-5431 Rotor Assembly offers boaters a trusted solution for maintaining optimal ignition in their engines. Perfect for replacing worn parts and ensuring a smooth ride on the water.

Type Rotors

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