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Sierra International 18 3894 Head Gasket Review

1

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Terrible

Revainrating 1 out of 5  
Rating 
1.0
🛺 Motorcycle Parts, 🏍️ Motorcycle & Powersports

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Description of Sierra International 18 3894 Head Gasket

Designed for use in Yamaha outboard applications. Interchangeable with Mallory 9-63951, and Yamaha Outboard 6G5-11181-00-00, 6G5-11181-01-00, 6G5-11181-A0-00, 6G5-11181-A1-00, 6G5-11181-A2-00, 6G5-11181-A3-00. Includes one gasket per package. Each Sierra product meets or exceeds the original equipment part it replaces.

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Type of review

Revainrating 1 out of 5

Non OE quality

Non OE quality as described. It's much smoother than the original. and the holes don't line up properly. I removed the head and saw that the gasket was misaligned. I also saw oil on the sealing surface where it leaked from the cylinder. Engine never started. .Head checked - it hasn't warped. well tolerated deformation. Part of the seal resided within the walls of the sleeve of the inner cylinder.

Pros
  • Includes one gasket per pack
Cons
  • I will add later