Drivetrain› Automatic Transmissions and Components

TCI Automotive

Speedo Housing GM Trans 7/8 Diameter 18-23T Cnt

$46.06

SKU: T00M 880021

In Stock
In Stock
Ships by Jun 14
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The TCI Automotive 880021 is a speedometer gear housing designed for specific GM transmissions. It features a 7/8" diameter and is compatible with 18-23 tooth gears.

This component references GM part numbers 345215 or 25513247 and is specifically designed to fit the Powerglide or Chevrolet TH250/350 transmissions.

Fitment

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Specifications

BrandTCI Automotive
Part NumberT00M 880021

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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