345215 Speedometer Block Off Plug w/O-Ring Fit for GMC Chevrolet Cadillac Buick Oldsmobile Pontiac with TH350 Automatic Transmission 1968-1981

★★★★★ 5.0 30 reviews

US$3.40
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US$3.40
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Free shipping Free 30-day returns

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Product details

Management number 237488850 Release Date 2026/07/10 List Price US$3.40 Model Number 237488850
Category
  • Precision Sealing: The speedometer gear replacement kit features a high-quality, oil-resistant O-ring that fits snugly into the TH350 transmission speedometer interface, effectively preventing transmission oil leaks caused by mechanical speedometer removal or aging of the original plug. This protects the internal lubrication system and ensures stable operation
  • High-Quality Aluminum Alloy: The Block Off Plug with O-Ring is CNC-machined from T6061 aircraft-grade aluminum alloy with an anti-oxidation surface treatment, offering excellent corrosion and high-temperature resistance. It will resist rust and deformation over time and is suitable for a variety of harsh driving conditions
  • Wide Compatibility: The speedometer housing replacement seal set perfectly fit for GMC Chevrolet Cadillac Buick Oldsmobile Pontiac vehicles equipped with TH350 automatic transmissions from 1968–1981. It also fits the TH350 and TH350C Turbo Hydra-Matic transmissions. It is compatible with tail housings with a 0.89-inch (7/8-inch) bore and 17 to 22 gear teeth. Replaces 25513247. A44774, 44774, 35227, 345215, 35922
  • Dual Protection: The Speedometer Block Off Plug not only prevents transmission oil leaks but also effectively isolates dust, moisture, and impurities, keeping the transmission clean, extending its service life, and enhancing the professionalism and reliability of vehicle modifications
  • Easy Installation: The Billet Aluminum Speedometer Block Off Plug requires no welding or modification; it directly replaces the original factory connector. No special tools are required, and installation can be completed in minutes. It's the ideal enclosed solution for upgrading a mechanical speedometer to an electronic system
ASIN B0FLTCJL88
Brand EMIHO
Item Weight 1.28 ounces
Manufacturer EMIHOus
Package Dimensions 2.75 x 1.97 x 0.98 inches
Manufacturer Part Number Replace 345215

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