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Torque Converter/FlexPlate Bolt (Screw), fits GM TH350 TH400#3987930 (3/8'-16 x 0.570) TH-350/400

Torque Converter/FlexPlate Bolt (Screw), fits GM TH350 TH400#3987930 (3/8′-16 x 0.570) TH-350/400

$35.41

33 ratingsSource: Amazon

Confirm quantity, package contents, selected variation, current offer details, and store terms before placing the order.

About this item

  • Industry Part ID: 3987930, B-64, B64, 35996
  • Made in the USA from heavy-duty, heat-treated alloy steel
  • Includes 3 bolts. These bolt kits are the strongest bolts you can get to attach your torque converter and are used in competitions. The bolts are fully heat treated prior to thread rolling and machining.
  • Dimensions: 3/8″-16, Length: 0.570″
  • Fits the following Turbo Hydramatic (THM) Transmission Torque Converter Applications: General Motors TH350 Buick, Oldsmobile, Pontiac (Includes TH300) General Motors TH400 3L80, Allison AT540, 310mm Allison AT540, 310mm, TH-400 (TH400, THM-400, THM400) 3L80/3L80HD 1973-82 Corvette, Camaro & Nova Chevelle. 3L80, 3L80HD, 3L8O, 3L8OHD. Flexplate / Flywheel

Before you order
  • Confirm the part number, position, dimensions, and connector details shown on this page.
  • Compare the listing with the part currently installed on your vehicle.
SKU: D-B01MT8ZGIJ Category:

Description

Perfect for High-Performance, racing, Heavy-Duty and Regular-Duty applications

Imported customer feedback

What customers reported

4.8 / 5 33 ratings

Source: Amazon. These reviews were imported from the source marketplace and are not reviews of purchases made on this website.

5 reviews for Torque Converter/FlexPlate Bolt (Screw), fits GM TH350 TH400#3987930 (3/8′-16 x 0.570) TH-350/400

  1. sneaky –

    Imported from Amazon. This is not a review of a purchase made on this website.

    External marketplace context: Verified Purchase

    good

  2. james –

    Imported from Amazon. This is not a review of a purchase made on this website.

    External marketplace context: Verified Purchase

    Great fit

  3. Ralph Longfellow –

    Imported from Amazon. This is not a review of a purchase made on this website.

    External marketplace context: Verified Purchase

    There bolts . Not much to say

  4. Connie-C –

    Imported from Amazon. This is not a review of a purchase made on this website.

    External marketplace context: Verified Purchase

    If you own a GM 350cc /AT – you need to know exactly the year of your engine (and flywheel flex plate). Late 80’s early 90’s they switched over to metric – Torque converter bolts come in both American and Metric. Worse yet, sizes are so close, the metric ones will screw-into the American sized flex plate leading you to believe it is the metric bold is the correct bold – WRONG ASSUMPTION. What will happen, you will tighten the bolt down and it will work loose.Moral of the story – make sure you do your homework and assess the exact year of your engine and flex plate – ALSO, DON’T FORGET TO APPLY LOCK TIGHT SEALANT TO THE THREADS.

    Customer review image

  5. Ryan –

    Imported from Amazon. This is not a review of a purchase made on this website.

    External marketplace context: Verified Purchase

    Worked well for summit tc for th350.

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Product facts

Specifications

Canonical product
MP-US-B01MT8ZGIJ
Source product ID
B01MT8ZGIJ
Category
Replacement Parts / Transmission & Drive Train / Torque Converters
Available images
2

Vehicle information

Available fitment details

Listing compatibility notes

  • 570" Fits the following Turbo Hydramatic (THM) Transmission Torque Converter Applications: General Motors TH350 Buick, Oldsmobile, Pontiac (Includes TH300) General Motors TH400 3L80, Allison AT540, 310mm Allison AT540, 310mm, TH-400 (TH400, THM-400, THM400) 3L80/3L80HD 1973-82 Corvette, Camaro & Nova Chevelle.

Fitment data is provided as a buying aid. Verify the listing against your vehicle and existing part before ordering.

Exact identity, part numbers, model references, and available compatibility evidence

Buying guidance

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An identity-first torque converters listing organized around stable product references and available compatibility evidence.

Fit and size notes

  • Match the complete identifier, side, position, connector, dimensions, and visible design with the existing part.
  • Treat uncertain vehicle notes as a buying aid, not as a confirmed fitment guarantee.

Specification notes

  • Canonical product: MP-US-B01MT8ZGIJ
  • Source product ID: B01MT8ZGIJ
  • Category: Replacement Parts / Transmission & Drive Train / Torque Converters
  • Available images: 2

Before you buy

  • Match the complete identifier, side, position, connector, dimensions, and visible design with the existing part.
  • Treat uncertain vehicle notes as a buying aid, not as a confirmed fitment guarantee.

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