BM 20239 Flexplate, 168 Tooth for 86-91 External Balance Small Block Chevy

SKU: 20239
Fits 1986 to 1994 GM externally balanced 4.3 liter V6 and small block V8 engines. Uses a 168 tooth ring gear. Has 10.75 inch and 11.5 inch bolt patterns. Compatible with Powerglide, TH350, TH400 and TH700R4 automatic transmissions.
Price: $124.95
FREE 3-Day Shipping (Details)

Shipping is free via UPS Ground or 3-Day Select for orders of $25 or more (excludes transmissions). If the transit time using UPS Ground Shipping will exceed 3 days to your location, we will upgrade the shipping service to UPS 3-Day Select, at no cost to you.

Free shipping is available within the continental U.S. only. Shipping charges will apply to all other destinations.

Verify This Part Fits Your Vehicle

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 1986 to 1994 GM (externally balanced) 4.3L V6 and GM small block V8 engines with one 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.

  • Includes SFI 29.1 Certification Sticker
  • Dual Pattern 10.75 or 11.5 Inch
  • Zinc Plated Chromate Finish
  • 168 Tooth Ring Gear
Crankshaft Bolt Hole Count6Outside Diameter (in)14.10
Tooth count168Crankshift Bolt Hole Count6
Weight (lb)7.5BalanceExternal
SFI Certification StickerIncludedDual PatternYes
IHRA LegalYesNHRA LegalYes
SFI ApprovedYes
 California Proposition 65 Information

WARNING: This product can expose you to chemicals including Cadmium and cadmium compounds which are known to the State of California to cause cancer and birth defects, or other reproductive harm (For more information go to


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Search by Vehicle