Speedo Gears & Housings

Powerglide Modulator Plug Kit | Sonnax

Powerglide Modulator Plug Kit When building a racing Powerglide, it is necessary to plug the hole left by the vacuum modulator. Sonnax now offers the vacuum modulator plug 28738-01K for the GM Powerglide transmission. Made from aluminum Anodized 3543L...

TH250 TH350 Powerglide Speedometer Gear Housing Bullet - Upgraded Steel Style

This is a new upgraded steel style speedometer gear housing bullet that replaces the aluminum ones that leak and wear out.  It includes both the o-ring and the gear stem seal.  Fits most 7/8'' hole Chevy, Muncie, Powerglide and TH350...

TH350 TH400 Speedo Driven Gear - 18-Tooth - Brown

This is a new replacement speedo driven gear used on GM automatic transmissions.   18-Tooth Brown Color

TH350 Speedo Driven Gear - 19-Tooth - Natural

This is a new replacement speedo driven gear used on GM automatic transmissions.   19-Tooth Natural Color

TH350 Speedo Driven Gear - 20-Tooth - Blue

This is a new replacement speedo driven gear used on GM automatic transmissions.   20-Tooth Blue Color

TH350 Speedo Driven Gear - 21-Tooth - Red

This is a new replacement speedo driven gear used on GM automatic transmissions.   21-Tooth Red Color

TH350 Speedo Driven Gear - 22-Tooth - Green

This is a new replacement speedo driven gear used on GM automatic transmissions.   22-Tooth Green Color