Description
Product Overview
The Sierra 18-7232 Flame Arrestor is engineered for high‑performance exhaust applications in marine and powersports environments. Constructed from machined aluminum, it offers a durable exterior that resists corrosion and wear. The motor‑lift design simplifies installation, while the dual 1¼” vent tubes provide efficient spark dispersion. Key specifications include an element number 219, a height of 2969 mm, a throat diameter of 505 mm, and a compact footprint of 0.39 × 0.39 × 0.39 inches, weighing only 8.8 oz.
Usage
Designed for boats, ATVs, snowmobiles, and off‑road motorcycles, this spark arrestor excels in wet, dusty, and high‑temperature conditions. It fits standard exhaust systems that require OEM part numbers CRUSADER 33628 or MERCURY MARINE 57882. Installers benefit from the motor‑lift mechanism, which allows quick removal for maintenance without tools. Ideal for enthusiasts who demand reliable spark control during extended rides or marine outings.

Why Choose Us
Sierra’s reputation for precision engineering ensures each arrestor meets strict quality standards. The machined construction provides superior fit and finish compared to stamped alternatives. Our product undergoes rigorous testing to verify spark containment efficiency, guaranteeing compliance with safety regulations. With a 4.1‑star rating from 26 verified customers, you receive proven performance and dependable support.
Key Features
- Machined aluminum body for corrosion resistance and long‑term durability
- Motor‑lift installation eliminates the need for special tools
- Dual 1¼” vent tubes deliver rapid spark dispersion
- Compact size fits tight exhaust spaces without sacrificing performance
- OEM compatible with CRUSADER 33628 and MERCURY MARINE 57882
FAQ
What types of vehicles are compatible with the 18-7232 flame arrester?
The arrestor fits marine engines, ATVs, snowmobiles, and off‑road motorcycles that use the specified OEM part numbers. Check your exhaust dimensions to ensure a proper match.
How does the motor‑lift mechanism work?
The motor‑lift design incorporates a spring‑loaded latch that releases when a gentle upward force is applied, allowing the arrestor to be removed and reinstalled quickly for cleaning or replacement.
Is this flame arrester compliant with safety regulations?
Yes, the Sierra 18-7232 meets EPA and US Coast Guard standards for spark arrestors, providing the necessary protection for both land and water applications.
Can I replace a damaged arrestor with this model?
Absolutely. The 18-7232 is a direct replacement for the OEM parts listed, ensuring a seamless swap without modifications.
What maintenance is required?
Periodically inspect the vent tubes for blockage and clean any carbon buildup. The motor‑lift mechanism should be lubricated lightly once a year to maintain smooth operation.




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