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S&S Cycle T143 Long Block Engine - Wrinkle Black/ Chrome - 310-0737A



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

1999 - 2005Harley DavidsonFLHTC Electra Glide ClassicNone
1999 - 2006Harley DavidsonFLHR Road KingNone
2000 - 2006Harley DavidsonFLHRI Road KingNone
1999 - 2006Harley DavidsonFLHRCI Road King ClassicNone
2003 - 2006Harley DavidsonFLHTI Electra Glide StandardNone
1999 - 2000Harley DavidsonFXDS-Conv Dyna ConvertibleNone
2004 - 2006Harley DavidsonFLHRS Road King CustomNone
1999 - 2002Harley DavidsonFLTR Road GlideNone
1999 - 2006Harley DavidsonFLHTCI Electra Glide ClassicNone
2005 - 2005Harley DavidsonFXDC Super Glide CustomNone
2004 - 2006Harley DavidsonFLHRSI Road King CustomNone
1999 - 2005Harley DavidsonFXDX Dyna Super Glide SportNone
1999 - 2006Harley DavidsonFLTRI Road GlideNone
2004 - 2005Harley DavidsonFXDI Dyna Super GlideNone
1999 - 2006Harley DavidsonFLHT Electra Glide StandardNone
1999 - 2005Harley DavidsonFXDL Dyna Low RiderNone
1999 - 2006Harley DavidsonFLHTCUI Electra Glide Ultra ClassicNone
2004 - 2005Harley DavidsonFXDWGI Dyna Wide GlideNone
2006 - 2006Harley DavidsonFLHXI Street GlideNone
2005 - 2005Harley DavidsonFXDCI Super Glide CustomNone
2004 - 2005Harley DavidsonFXDXI Dyna Super Glide SportNone
2006 - 2006Harley DavidsonFLHX Street GlideNone
1999 - 2005Harley DavidsonFXDWG Dyna Wide GlideNone
2001 - 2003Harley DavidsonFXDXT Dyna Super Glide T-SportNone
1999 - 2005Harley DavidsonFXD Dyna Super GlideNone
2004 - 2005Harley DavidsonFXDLI Dyna Low RiderNone

Shipping Information

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  • Free Ground Shipping (1 - 5 Days)