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2001-05 LB7 / LLY Allison Billet Flexplate For GM Duramax A1-BFP-1

Original price $815.00 - Original price $815.00
Original price
$815.00 - $815.00
Current price $815.00

Part Number: A1-BFP-1


This replaces the factory flywheel/flex plate with a improved billet steel one-piece design and eliminates the heavy cast iron and the weak stamped steel flex plate. This is a must with the high torque in conjunction with a better designed torque converter that can transfer the torque with no slip.

The flex plate is bolted to the crankshaft and then the converter is bolted to flex plate. The torque from the motor is transferred to the flex plate, then goes from the flex plate to the torque converter and finally to the in- put shaft in the transmission. With increased torque from the engine, it can crack and/or rip the center out of a stock flex plate.

NOTE: A SFI certified flywheel flex plate is required on drag racing vehicles running 11.99 and quicker in the 1/4 mile and 7.49 and quicker in the 1/8 mile, or any vehicle exceeding 135 mph. It was changed in 2008 from the 29.1 SFI specification to the SFI specification 29.3 for automatic transmission flex plates for diesel applications. The new rules for the flex plate requires that the material cannot be a stamped metal as are many OEM and after market flex plates. To maintain the SFI specification 29.3 requirements, the flex plate must be replaced every three years.


Compatible Vehicles:

  • 2005 Chevrolet C4500 Kodiak
  • 2005 Chevrolet C5500 Kodiak
  • 2005 Chevrolet Silverado 2500 HD
  • 2005 Chevrolet Silverado 3500
  • 2005 GMC C4500 Topkick
  • 2005 GMC C5500 Topkick
  • 2005 GMC Sierra 2500 HD
  • 2005 GMC Sierra 3500
  • 2004 Chevrolet C4500 Kodiak
  • 2004 Chevrolet C5500 Kodiak
  • 2004 Chevrolet C6500 Kodiak
  • 2004 Chevrolet C7500 Kodiak
  • 2004 Chevrolet Silverado 2500 HD
  • 2004 Chevrolet Silverado 3500
  • 2004 Chevrolet T6500
  • 2004 Chevrolet T7500
  • 2004 GMC C4500 Topkick
  • 2004 GMC C5500 Topkick
  • 2004 GMC C6500 Topkick
  • 2004 GMC C7500 Topkick
  • 2004 GMC Sierra 2500 HD
  • 2004 GMC Sierra 3500
  • 2004 GMC T6500
  • 2004 GMC T7500


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