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TCI Automotive Automatic Transmission Flexplate 399754 product image 1
TCI Automotive Automatic Transmission Flexplate 399754 product image 2

TCI LS 168-Tooth Wide-Bolt Flexplate 399754

SKU: 399754

$375.95

TCI LS 168-Tooth Wide-Bolt Flexplate 399754

Strengthened construction resists flexplate cracking and elongation
TCI LS 168-Tooth Wide-Bolt Flexplate 399754

Starter ring welded on both sides adds drivetrain strength
TCI LS 168-Tooth Wide-Bolt Flexplate 399754

Precision balancing and runout checks support smoother operation
TCI LS 168-Tooth Wide-Bolt Flexplate 399754

SFI 29.1 approval supports serious performance drivetrain use
TCI LS 168-Tooth Wide-Bolt Flexplate 399754

168 teeth ring gear matches the specified engine application

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California Proposition 65 Warning

Prop 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

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Emissions Compliance Exempt
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TCI LS 168-Tooth Wide-Bolt Flexplate 399754

$375.95

$375.95

168 teeth

Teeth

Internal

Balance

SFI 29.1

Approval

Product Description

The TCI 399754 is a black steel automatic transmission flexplate for GM LS 4.8, 5.3, 5.7 and 6.0 engines. It uses a 168 teeth ring gear, internally balanced construction, and SFI 29.1 approval for performance drivetrain use.

The heavy-duty construction is 0.035 in thicker than stock, and the starter ring is welded to both sides of the flexplate for added strength. High-tensile material helps resist elongation and cracking, while precision balancing and runout checks support smoother operation.

This flexplate uses wide bolt circle and 11-1/2 in torque converter bolt circle details where specified. It is the wide bolt pattern LS option and uses an 11.1 in wide bolt circle. TCI lists limited 30-day racing and 90-day street-strip warranty coverage.

Specifications

Brand
TCI Automotive
Part Number
399754
Type
Automatic Transmission Flexplate
Material
Steel
Finish
Black
Number of Teeth
168 teeth
Balance
Internal
SFI Approval
SFI 29.1
Crank Bolt Circle
6 bolt
Rear Main Bearing
1-piece
Engine Application
GM LS 4.8/5.3/5.7/6.0
Torque Converter Bolt Circle
11-1/2 in
Bolt Circle Note
11.1 in wide bolt circle
Warranty
30-day racing / 90-day street-strip

Fitment / Application

2001-2004 | Avanti | II
2008-2009 | Buick | Allure
2008-2009 | Buick | LaCrosse
2004-2007 | Buick | Rainier
2002-2005 | Cadillac | Escalade
2003-2006 | Cadillac | Escalade ESV
2007-2013 | Chevrolet | Avalanche
2002-2006 | Chevrolet | Avalanche 1500
2011-2015 | Chevrolet | Caprice
2007-2010 | Chevrolet | Cheyenne
2009-2012 | Chevrolet | Colorado
2005-2007 | Chevrolet | Corvette
2003-2014 | Chevrolet | Express 1500
2003-2014 | Chevrolet | Express 2500
2003-2007, 2011-2012 | Chevrolet | Express 3500
2012-2013 | Chevrolet | Express Cargo
2013-2015 | Chevrolet | Express Pasajeros
2006-2009 | Chevrolet | Impala
2006-2007 | Chevrolet | Monte Carlo
2003-2004 | Chevrolet | SSR
2000-2006, 2009-2015 | Chevrolet | Silverado 1500
2007-2015 | Chevrolet | Silverado 2500 HD
2008-2010 | Chevrolet | Silverado 3500
2007-2015 | Chevrolet | Silverado 3500 HD
2000-2012 | Chevrolet | Suburban 1500
2007-2013 | Chevrolet | Suburban 2500
2000-2002, 2004-2009, 2011-2015 | Chevrolet | Tahoe
2006-2008 | Chevrolet | Trailblazer
2003-2006 | Chevrolet | Trailblazer EXT
2009-2012 | GMC | Canyon
2005-2009 | GMC | Envoy
2003-2006 | GMC | Envoy XL
2004-2005 | GMC | Envoy XUV
2003-2014 | GMC | Savana 1500
2003-2004, 2006-2010, 2012-2015 | GMC | Savana 2500
2003-2015 | GMC | Savana 3500
2001-2006, 2008-2009, 2011-2012, 2014-2015 | GMC | Sierra 1500
1999-2000 | GMC | Sierra 2500
2007-2015 | GMC | Sierra 2500 HD
2007-2015 | GMC | Sierra 3500 HD
2001-2003, 2005-2007, 2009-2010, 2013-2015 | GMC | Yukon
2000-2014 | GMC | Yukon XL 1500
2007-2013 | GMC | Yukon XL 2500
2008-2010 | Hummer | H3
2009-2010 | Hummer | H3T
2003-2006 | Isuzu | Ascender
2008-2009 | Pontiac | G8
2005-2008 | Pontiac | Grand Prix
2005-2009 | Saab | 9-7x
2004-2005 | Workhorse | FasTrack FT1061
2004-2005 | Workhorse | FasTrack FT1461
2004-2005 | Workhorse | FasTrack FT1601

What's in the Box

• Automatic transmission flexplate

Installation & Documents

Verify engine balance, rear main seal type, tooth count, and converter bolt-circle compatibility before installation. Verify the 11-1/2 in converter bolt circle and LS application before installation.

Product Catalog