This plug is used to block the mechanical speedometer gear port when upgrading to an electronic speedometer and includes a replaceable Viton rubber o-ring. It features a black billet aluminium anodized finish for long lasting good looks, even in harsh conditions.
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Suits most transmissions with .875″ / 7/8″ port
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Fits These GM Automatic & Manual Transmissions
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Muncie M20, M21, M22 4 speed
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Muncie 3 speed
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Saginaw 3 & 4 speeds
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T-5 5 speed WC & NWC
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T-4 4 speed
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TH350
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TH350C
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TH250
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TH350C
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200-4R
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Powerglide
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Supplied with unc & unf stainless button head fasteners
