Drivetrain› Automatic Transmissions and Components

TCI

168-Tooth Internal Balance Flexplate

$137.95

SKU: 890-399273

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$100 Minimum Order
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Moderate — 2–4 hours

Overview

The TCI 890-399273 is a 168-tooth internal balance flexplate designed for Small and Big Block Chevy V8 engines. It is SFI 29.1 approved and constructed from high tensile strength material for durability. This flexplate features a dual GM bolt pattern, accommodating both 10.75" small GM and 11.5" big GM converter bolt patterns.
Show original supplier description
The TCI Automotive 399273 is a 168-tooth internal balance flexplate engineered for Small and Big Block Chevy V8 engines with a 6-bolt crankshaft flange and a 2-piece rear main seal. It boasts an SFI 29.1 approval for safety and is constructed from high tensile strength material to resist elongation and cracking. This flexplate is drilled for both 10.75" small GM and 11.5" big GM torque converter bolt patterns, offering versatile compatibility. It is .035" thicker than stock, and the starter ring is welded to both sides for enhanced strength. The flexplate is sized for stock 3/8" mounting bolts but can be drilled for 7/16" high-performance torque converter applications. It is ideal for stock to mild performance applications. This flexplate is designed to fit all internally balanced Chevy V8 engines. However, it does not fit Gen V engines.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandTCI
Part Number890-399273
CategoryDrivetrain
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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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