★★★★★ 5
good name bosch ,works well
its a bosch it fits does not leak so its good in my opinion
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Reviewed in the United States on May 2, 2026
QL78YC - Champion Marine / Motorcycle Spark Plug
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
QL78YC - Champion Marine / Motorcycle Spark PlugWhen youre out on the water or riding in demanding conditions, a dependable marine spark plug is essential for smooth and reliable engine performance. The Champion QL78YC is engineered for marine and motorcycle applications, delivering consistent ignition even in harsh environments where reliability matters most. This marine spark plug uses a copper core design to maximise heat dissipation and electrical conductivity. That means better combustion
Quick Dispatch:
Your QL78YC - Champion Marine / Motorcycle Spark Plug orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Product Reviews
★★★★★ 5
OEM quality
Great alternative to OEM, worked great on 18 outback 2.5. Should fit most 2.5/2.0 Subaru engines in various cars.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
★★★★★ 5
Pay attention for the model and make of your vehicle
Works perfectly.
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Reviewed in the United States on December 25, 2025
★★★★★ 5
Just Get the Premium
Overall dimensions are slightly smaller than OEM. Purchased this and then found the BOSCH Premium equivalent for less (both here on Amazon). This one works fine, but for less money and better filtration, just get the Premium line.
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Reviewed in the United States on March 18, 2024
★★★★★ 5
fits 2018 subaru forester
this fits 2018 subaru forester and it's great for the price.
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Reviewed in the United States on April 24, 2025
