
S&S CYCLE T143 Long Block Engine
In stock items will be shipped within 1-3 days.
You can return the products within 14 days for a full refund, check our returns policy.
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In stock items will be shipped within 1-3 days.
You can return the products within 14 days for a full refund, check our returns policy.
The T143 Long Block Engine is a high-performance engine designed for Harley-Davidson motorcycles. It features S&S B3 cylinder heads CNC-machined with two-bolt exhaust flanges, ensuring a robust and efficient exhaust system.
Equipped with S&S 635 easy-start gear drive cams and 1.725:1 rocker arms, this engine provides a total lift of .674", enhancing performance and responsiveness. The S&S Super Stock™ T2 crankcases come with a reed breather valve and three-piece flywheels, ensuring durability and optimal performance.
This engine also includes an S&S high-flow oil pump and cam cover, as well as premium high-performance tappets, delivering superior lubrication and reliability.
Made in the USA, the T143 Long Block Engine fits in stock chassis without the need for cutting or frame modifications. Please note that a T143-specific or custom exhaust is required, and carb/intake or ignition systems must be purchased separately. The revised oil routing on '99-'06 Touring models eliminates the need for an oil line installation kit.
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We do not ship to the Canary Islands, Ceuta, or Melilla.
Shipping costs are calculated automatically at checkout based on destination and weight.
Free shipping may be offered for qualifying orders, as specified on our website.
Orders are processed within 1–2 business days after payment confirmation. Orders placed on weekends or public holidays are processed the next business day.
If your order is delayed or arrives damaged, you must notify us within 14 calendar days. We will investigate the issue and offer a resolution in accordance with applicable consumer protection laws.
In accordance with Royal Legislative Decree 1/2007 (Ley de Defensa de los Consumidores y Usuarios), you have the right to withdraw from your purchase within 14 calendar days from the date of receipt, without giving any reason.
To exercise this right, contact us via email or through our website, providing your order number and contact details.
If you want to return an item, please contact us first to give you detailed instructions.