Extreme Duty Left Side Main Bearing Kit for Harley Twin Cam and M8 (A-24004-03B)
This left-side main bearing kit for 2003‑up Twin Cam and M8 engines delivers durable, high‑torque capability with case-hardened inner and outer races designed to withstand elevated stresses during aggressive riding and engine modifications.
- Includes bearing spacer, thrust washers, and snap ring
- Case-hardened inner and outer races for increased load capacity
- Installed on the left side of the crankcase to support the output shaft and connect to the primary drive system
- Made in the USA
- OEM cross reference: 24004-03B; compatible with FLST models 2003–2012
- Fitment: Harley Davidson FLST 2003–2017; FLT 2003–2027; FXD 2003–2017; FXST 2003–2017
The kit includes all necessary components for installation, with online instructions available to guide setup and ensure proper torque and alignment for reliable engine performance.
Extreme duty left side main bearing kit is for all 2003-UP Twin Cam and M8 models. Includes bearing spacer thrust washers and snap ring.
The Eastern Extreme Heavy Duty Left Side Main Bearing Kit is engineered for high-performance Harley Davidson FLST models, providing superior durability and load capacity under demanding conditions. Designed to support increased torque from engine modifications, this kit features case-hardened inner and outer races that withstand elevated stresses, ensuring reliable operation during high-torque applications. Installed on the left side of the crankcase, it effectively supports the output shaft and connects seamlessly to the primary drive system, promoting smooth power transfer and engine longevity. Crafted in the USA, this bearing kit is a critical upgrade for riders seeking enhanced engine reliability and performance. The kit includes all necessary components for installation, backed by detailed instructions available online for ease of setup. OEM cross-referenced as part number 24004-03B, this bearing kit ensures compatibility with various Harley Davidson FLST models from 2003 through 2012. Proper installation and maintenance of this bearing are essential for maintaining optimal engine function and preventing premature wear. This high-quality component is a must-have for enthusiasts and professional mechanics aiming to maximize their motorcycle’s performance and durability in demanding riding conditions.
Features:
- Heavy-duty case-hardened inner and outer races for increased load capacity
- Supports high torque loads from engine modifications
- Designed for installation on the left side of the crankcase
- OEM cross reference: 24004-03B
- Made in the USA for quality assurance
Fitment:
Harley Davidson FLST 2003
Harley Davidson FLST 2004
Harley Davidson FLST 2005
Harley Davidson FLST 2006
Harley Davidson FLST 2007
Harley Davidson FLST 2008
Harley Davidson FLST 2009
Harley Davidson FLST 2010
Harley Davidson FLST 2011
Harley Davidson FLST 2012
Harley Davidson FLST 2013
Harley Davidson FLST 2014
Harley Davidson FLST 2015
Harley Davidson FLST 2016
Harley Davidson FLST 2017
Harley Davidson FLT 2003
Harley Davidson FLT 2004
Harley Davidson FLT 2005
Harley Davidson FLT 2006
Harley Davidson FLT 2007
Harley Davidson FLT 2008
Harley Davidson FLT 2009
Harley Davidson FLT 2010
Harley Davidson FLT 2011
Harley Davidson FLT 2012
Harley Davidson FLT 2013
Harley Davidson FLT 2014
Harley Davidson FLT 2015
Harley Davidson FLT 2016
Harley Davidson FLT 2017
Harley Davidson FLT 2018
Harley Davidson FLT 2019
Harley Davidson FLT 2020
Harley Davidson FLT 2021
Harley Davidson FLT 2022
Harley Davidson FLT 2023
Harley Davidson FLT 2024
Harley Davidson FLT 2025
Harley Davidson FLT 2026
Harley Davidson FXD 2003
Harley Davidson FXD 2004
Harley Davidson FXD 2005
Harley Davidson FXD 2006
Harley Davidson FXD 2007
Harley Davidson FXD 2008
Harley Davidson FXD 2009
Harley Davidson FXD 2010
Harley Davidson FXD 2011
Harley Davidson FXD 2012
Harley Davidson FXD 2013
Harley Davidson FXD 2014
Harley Davidson FXD 2015
Harley Davidson FXD 2016
Harley Davidson FXD 2017
Harley Davidson FXST 2003
Harley Davidson FXST 2004
Harley Davidson FXST 2005
Harley Davidson FXST 2006
Harley Davidson FXST 2007
Harley Davidson FXST 2008
Harley Davidson FXST 2009
Harley Davidson FXST 2010
Harley Davidson FXST 2011
Harley Davidson FXST 2012
Harley Davidson FXST 2013
Harley Davidson FXST 2014
Harley Davidson FXST 2015
Harley Davidson FXST 2016
Harley Davidson FXST 2017
