Drivetrain› Automatic Transmissions and Components
B&M
FLEXPLATE 168 TOOTH 454 CID
SKU: B00M 20233
Moderate — 2–4 hours
Description
Part #: 20233
As performance levels increase, an O.E. style flexplate just won't cut it and a stronger option is a necessity to prevent transmission and/or converter failure. B&M has you covered with our high performance flexplate designed for 1965-1990 Chevrolet big block 454ci (externally balanced) V8 engines with two piece rear main seal. Features include high tensile strength steel construction to resist elongation and cracking, dual bolt pattern 10.75 or 11.5-inch converter mounting locations, 168 tooth ring gear with double-sided welds for added strength and comes with SFI 29.1 safety certification insuring the ultimate in safety and performance. The assembly is then Zinc plated and treated with a Chromate Conversion Coating for added corrosion resistance and durability. B&M SFI approved flexplates are ideal for extreme duty race applications as well as street cars, tow vehicles or other vehicles needing the added protection and toughness that B&M has been delivering since 1953. Compatible with Powerglide, TH350, TH400 and TH700R4 automatic transmissions.
Features:
- NHRA and IHRA Legal For All Classes
- Includes SFI Certification Sticker
- Ideal For Street Applications
- Zinc Plated Chromate Finish
- To Extreme Duty Racing
- Proven B&M Quality
1970-1990 Chevrolet 454 Big Block with 168-tooth, externally balanced engines.
MIA's Description
Constructed from durable steel, the B&M 20233 is SFI 29.1 approved, making it suitable for racing applications with RPMs exceeding 6,000. It includes a ring gear and offers dual bolt patterns for converter mounting (10.75 in. and 11.5 in.).
Fitment
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Specifications
| Brand | B&M |
| Part Number | B00M 20233 |
Buy with Confidence
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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