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S&S Cycle T143 Long Block Engine - Black - 310-0901A



The S&S T143 Long Block engine is the largest S&S engine that will fit in a stock Harley- Davidson chassis. At double the HP of a stock motor, the power of the T143 requires technical expertise for the installation and tuning along with an experienced rider. This is an ultra performance/race engine. Longevity, engine noise, vibration and throttle sensitivity have all been compromised to reach this level of performance while fitting in a stock chassis and, as such, is not suitable for every situation. It is the purchasers responsibility to consider the suitability for their application.
Engine noise and damage from abuse is not covered under warranty.
Fits in stock chassisno cutting or frame modifications
S&S B3 cylinder heads CNC-machined with 2-bolt exhaust flanges
3 Piece Flywheels
S&S high flow oil pump and cam cover
S&S 635 Easy Start Gear Drive Cams and S&S 1.725:1 rocker arms for .674 in. total lift
S&S Premium High Performance Tappets
Made in USA
NOTE: Does not include carb/ intake or ignition system. Must be purchased separately
NOTE: T143-specific or custom exhaust required

Product Series

Application List

2012 - 2016Harley DavidsonFLD SwitchbackNone
2007 - 2014Harley DavidsonFXDC Super Glide CustomNone
2007 - 2009Harley DavidsonFXDL Dyna Low RiderNone
2007 - 2010Harley DavidsonFXD Dyna Super GlideNone
2007 - 2017Harley DavidsonFXDB Street BobNone
2008 - 2017Harley DavidsonFXDF Fat BobNone
2006 - 2006Harley DavidsonFXDWGI Dyna Wide GlideNone
2006 - 2006Harley DavidsonFXDI Dyna Super GlideNone
2006 - 2006Harley DavidsonFXDCI Super Glide CustomNone
2006 - 2006Harley DavidsonFXDI35 Dyna 35th Anniversary Super GlideNone
2006 - 2006Harley DavidsonFXDBI Street BobNone
2014 - 2017Harley DavidsonFXDL Low RiderNone
2006 - 2006Harley DavidsonFXDLI Dyna Low RiderNone
2007 - 2017Harley DavidsonFXDWG Dyna Wide GlideNone

Shipping Information

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