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B&M Steel SFI Certified Flexplate, GM LS Engines 20340

B&M Steel SFI Certified Flexplate, GM LS Engines 20340
B&M Steel SFI Certified Flexplate, GM LS Engines 20340
$185.99 ea
NEWARRIVING SOONEstimated Ship Date 08/01/2025 (If Ordered Today)
Model: 3998146
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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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 GM 1997-up 4.8L, 5.3L, 5.7L & 6.0L LS engines with 6-bolt crankshaft flange, including 2010-15 Camaro with the L99 engine. Features include high tensile strength steel construction to resist elongation and cracking, 10.75 and 11.06-inch converter mounting locations, 168 tooth ring gear with double-sided welds for added strength and comes with SFI 29.1 safety certification ensuring the ultimate in safety and performance. The assembly is finished with Zinc plating and 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. Note: Will not fit 1999-00 6.0L applications with 0.400 inch extended crank flange/flat flexplate or 1999-00 4.8L engines that originally came with a manual transmission. A flexplate spacer is required for retrofitting Non-LS era transmissions to LS engines.
Features:
  • 10.75, 11.06 Inch Bolt Pattern Convertor Mount
  • Includes SFI 29.1 Certification Sticker
  • Zinc Plated Chromate Finish
  • 168 Tooth Ring Gear
  • B&M Quality
Fits GM LSx motors. Including 2010 and newer automatic Camaro with L99 engine and 1st through 4th generation Chevrolet Camaro and Pontiac Firebird. Also fits all GM LSx motors using an automatic transmission including Corvette, GTO, and G8
Installation Notes:
Fits GM LSx motors. Including 2010 and newer automatic Camaro with L99 engine and 1st through 4th generation Chevrolet Camaro and Pontiac Firebird. Also fits all GM LSx motors using an automatic transmission including Corvette, GTO, and G8
About B&M Racing

B&M® specializes in performance automatic transmissions, torque converters, SFI approved flexplates, legendary automatic shifters, precision manual shifters, and many other transmission products including cast deep aluminum transmission pans, transmission coolers, and automatic transmission fluid. B&M Performance & Off-Road has been at the vanguard of the growing automotive aftermarket since the early 1950s. Racers themselves, B&M’s founders identified the needs of local performance enthusiasts and developed products to fill those needs. B&M specializes in performance automatic transmissions, torque converters, SFI approved flexplates, legendary automatic shifters, precision manual shifters, automatic shift handles, extended transfer case handles, cast deep aluminum transmission pans, differential covers, transmission coolers, power steering coolers, automatic transmission fluid, and transmission accessories for performance street, truck, Jeep, and off-road applications.

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years Engine
Chevrolet Camaro 1997 5.7L / 350 / V8
Chevrolet Camaro 1998 5.7L / 350 / V8
Chevrolet Camaro 1999 5.7L / 350 / V8
Chevrolet Camaro 2000 5.7L / 350 / V8
Chevrolet Camaro 2001 5.7L / 350 / V8
Chevrolet Camaro 2002 5.7L / 350 / V8
Chevrolet Camaro 2010 6.2L / 376 / V8
Chevrolet Camaro 2011 6.2L / 376 / V8
Chevrolet Camaro 2012 6.2L / 376 / V8
Chevrolet Corvette 1997 5.7L / 350 / V8
Chevrolet Corvette 1998 5.7L / 350 / V8
Chevrolet Corvette 1999 5.7L / 350 / V8
Chevrolet Corvette 2000 5.7L / 350 / V8
Chevrolet Corvette 2001 5.7L / 350 / V8
Chevrolet Corvette 2002 5.7L / 350 / V8
Chevrolet Corvette 2003 5.7L / 350 / V8
Chevrolet Corvette 2004 5.7L / 350 / V8
Chevrolet Corvette 2005 6.0L / 364 / V8
Chevrolet Corvette 2006 6.0L / 364 / V8
Chevrolet Corvette 2007 6.0L / 364 / V8
Chevrolet Corvette 2008 6.2L / 376 / V8
Chevrolet Corvette 2009 6.2L / 376 / V8
Chevrolet Corvette 2010 6.2L / 376 / V8
Chevrolet Corvette 2011 6.2L / 376 / V8
Chevrolet Corvette 2012 6.2L / 376 / V8
Chevrolet Impala 2006 5.3L / 325 / V8
Chevrolet Impala 2007 5.3L / 325 / V8
Chevrolet Impala 2008 5.3L / 325 / V8
Chevrolet Impala 2009 5.3L / 325 / V8
Chevrolet Monte Carlo 2006 5.3L / 325 / V8
Chevrolet Monte Carlo 2007 5.3L / 325 / V8
Pontiac Firebird 1997 5.7L / 350 / V8
Pontiac Firebird 1998 5.7L / 350 / V8
Pontiac Firebird 1999 5.7L / 350 / V8
Pontiac Firebird 2000 5.7L / 350 / V8
Pontiac Firebird 2001 5.7L / 350 / V8
Pontiac Firebird 2002 5.7L / 350 / V8
Pontiac G8 2008 6.0L / 364 / V8
Pontiac G8 2009 6.2L / 376 / V8
6.0L / 364 / V8
Pontiac GTO 2004 5.7L / 350 / V8
Pontiac GTO 2005 6.0L / 364 / V8
Pontiac GTO 2006 6.0L / 364 / V8
Pontiac Grand Prix 2005 5.3L / 325 / V8
Pontiac Grand Prix 2006 5.3L / 325 / V8
Pontiac Grand Prix 2007 5.3L / 325 / V8
Pontiac Grand Prix 2008 5.3L / 325 / V8

Specifications:

# of Teeth 168
Application Chevrolet
Balance Internal
California Proposition 65 Chemical Name Cadmium and cadmium compounds
California Proposition 65 Required Yes
Converter Bolt Pattern 10.75 in., 11.06 in.
Crankshaft Bolt Hole Count 6
Dual Pattern Yes
Emission Code 5
Engine GM Small Block Gen III/IV (LS Based)
IHRA Legal Yes
NHRA Legal Yes
Outside Diameter (in) 14.13, 14.13
Part Type Automatic Transmission Flexplate
Product Type Flexplates
Proposition 65 www.P65Warnings.ca.gov
SFI Approved Yes
SFI Certification 29.1
SFI Certification Sticker Included
Warranty Time 12 Months
Weight (lb) 6

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B&M Steel SFI Certified Flexplate, GM LS Engines 20340: