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HKS Rotary Applications M-Series Spark Plugs Heat Range 10.5

Marsoni M251S
Sale price$230.00
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HKS Rotary Applications M-Series Spark Plugs Heat Range 10.5SKU: 50003 M525RE UPC: 4957266720349 HKS Rotary Applications M Series Spark Plugs Heat Range 10. 5 for Mazda RX 7 (1986 2002) RX 8 (2004 2011) HKS M Series spark plugs with heat range 10. 5 fit Mazda rotary engines in RX 7 FC FD and RX 8 models. These plugs resist pre ignition and fouling during sustained high RPM operation in performance rotary applications. Install them for consistent combustion in modified 13B and Renesis engines. Key Features
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Johnny Gharbin
Grantham, US
★★★★★ 1
Disappointed
Size: Single
It didn’t work as expected
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Reviewed in the United States on May 30, 2026
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anonymous
Draper, US
★★★★★ 1
Fake
Size: 2-Pack
No good just a lie
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Reviewed in the United States on April 13, 2026
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Gregory Allen DeAtley
Boise, US
★★★★★ 5
Works great
Number of Items: 4, Style: SILZKAR7B11
Exactly what it is supposed to be ! Good service
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Reviewed in the United States on May 6, 2026
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Kim Justice
Los Angeles, US
★★★★★ 5
Perfect
Number of Items: 4, Style: SILZKAR7B11
Great Quality. Worked Perfectly.
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Reviewed in the United States on December 13, 2025
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Jhonn Arguello
Phoenix, US
★★★★★ 5
Muy buenas
Number of Items: 4, Style: SILZKAR7B11
Excelente
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Reviewed in the United States on August 29, 2025

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