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Sierra Marine Thunderbolt IV HEI distributors are designed as a direct replacement for Mercury Thunderbolt IV ignition distributors. They use a hall effect-type sensor to trigger ignition accurately, even at low rpm. They meet or exceed SAE J1171 standards.
( 2 )
$314.99
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$379.99
Tuff Stuff Performance offers a variety of marine alternators—which can serve as replacements for many factory models, including Mercury, Mallory, Sierra, Arco, GLM, MES, and more. All of these units are hand-built in Cleveland, OH and are tested to meet or exceed OEM specifications. They're made from 100 percent new components, not remanufactured; and all are for 12 V, negative ground systems (except where noted). Power your watercraft accessories with a Tuff Stuff alternator. Additional details: * High-output alternator provides long-term dependability * Flames arrestor screen for safety * Serpentine or V-belt models available * Internal or external location, depending on model * Different advertised amperage outputs available * Most models include regulator
Not Yet Reviewed
$271.99
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$327.99
Sierra Marine alternators are designed to OEM specifications. All models meet or exceed USCG and SAE J1171 safety requirements and are 100 percent load-tested for assured reliability. Order the replacement alternator recommended for your watercraft application.
Not Yet Reviewed
$254.99
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$365.99
Sierra Marine Delco EST distributors are designed as direct replacements for late model GM EST (Electronic Spark Timing) distributors. They feature an aluminum housing and meet or exceed SAE J1171 standards. A steel gear is included which is compatible with a flat tappet or hydraulic roller cam. Their ball bearing and bushing combination provide maximum timing stability and long-life.
( 2 )
$438.99
Sierra Marine Delco HVS distributors utilize an aluminum housing that replaces weaker plastic housings found on factory models. These are designed as direct replacements for late model GM HVS distributors. A steel gear is included which is compatible with a flat tappet or hydraulic roller cam. Their ball bearing and bushing combination provide maximum timing stability and long-life. Meets or exceeds SAE J1171 standards.
Not Yet Reviewed
$523.99
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