★★★★★ 5
buy these!!
these are legit original NGK, superior plugs, will buy again
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
SIERRA - Belt, Alternator Mercruiser - 18-15480, 48122, 48122Q, 57-48122, 57-481
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
SIERRA - Belt, Alternator Mercruiser - 18-15480, 48122, 48122Q, 57-48122, 57-481Item#: 18 15480 Belt, Alternator Mercruiser OEM#: 48122, 48122Q, 57 48122, 57 48122Q Note: 47 7 8" Details: BELT LENGTH 47 7 8" Brand: Sierra FITMENTS: Make Model Year(s) Mercruiser 7. 4 Liter V8 370 1978 1987 Mercruiser 7. 4 Liter V8 454 1994 1997 Mercruiser 8. 2 Liter V8 502 1990 1997 Mercruiser V8 427 1969 1972
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Based on 341 reviews
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Product Reviews
★★★★★ 5
Worked like a charm
Worked like a charm. The box and packaging were adequate from keeping the gaps of the plugs from being squished.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
★★★★★ 5
Perfect!!
As I expected, no more to say only I'm happy I got it.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Works great
Works great
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Reviewed in the United States on March 30, 2026
★★★★★ 5
exact fit
working good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
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