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Automatic Transmission Flexplate

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Automatic Transmission Flexplate

Part Number : FRA-133

Original Equipment (OE) Part Interchange

GENERAL MOTORS: 25501870

Features & Benefits

PIONEER Automatic Transmission Flexplates are a high quality replacement part designed to restore OEM levels of performance. Each plate is built to the original dimensions out of high grade steel, features an automated welding process for exceptional strength and consistency and then precision balances to factory specs.

Warranty

For more information about the warranty View Details

Specifications

Application

Part Number
FRA-133
Name
Automatic Transmission Flexplate
Teeth (in inches)
162
Outer Diameter
13.628"
Additional Details
Center Hole Dia. 2.488" Torque Converter 9.75", 10.75",11.5" Dia Patterns 3 holes each at 8.44", 9.31", 9.96"
Flywheel Pitch
12-14
Weight Added
No

Fitment Notes

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1979 BUICK RIVIERA V6 3.8L 3800CC 231CID
1980 BUICK RIVIERA V6 3.8L 3800CC 231CID
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Support

Tech Hotline
Having trouble mid-install?
Phone:  800-647-6272

Pioneer Automotive Industries
Copyright 2025

Pioneer Automotive Industries
5184 Pioneer Road
Meridian, MS 39301

Main Line:  601-483-5211

Customer Service:
Phone :  800-821-2302
Fax:  800-821-2303

Tech Support:
Phone:  800-647-6272

Email: Support