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ACDelco Speedometer Gears 3987920

Speedometer Gear, Driven 20-Tooth, Plastic, Blue, GM, 700R4, TH200, TH250, TH400, Each

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Brand: ACDelco

Manufacturer's Part Number: 3987920

Part Type: Speedometer Gears

Product Line: ACDelco Speedometer Gears

Summit Racing Part Number: ADO-3987920

UPC: 036666071382

Speedometer Gear Type: Driven

Speedometer Gear Material: Plastic

Speedometer Gear Color: Blue

Quantity: Sold individually.

In-Store Pickup: Choose In-store pick-up (OH, NV, GA, TX) on our web site.

ACDelco speedometer gears engage your vehicle for an accurate measurement of speed. These durable plastic gears help to calibrate your speed when changes like smaller tires, bigger tires, or changes in ring and pinion ratios throw your speedometer off. How fast are you going? You'll read your vehicle's true speed with replacement speedometer gears from ACDelco.


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1 Customer Reviews for ACDelco 3987920 - ACDelco Speedometer Gears

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Speedometer gear

Summit RacingSummit Racing Verified Purchase

I had to replace the original 20 tooth gear in my Muncie and even though this gear isn't listed to used with the 4 speed it works fine.

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Reviewer: from OH

Date: May 09, 2016

Ease of Installation
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Some parts are not legal for use in California or other states with similar laws / regulations

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