Flynsu Front Differential Intermediate Shaft Kit for 2012–2021 Dodge Ram 1500 — Inner Shafts, Seals & OEM-fit

Flynsu Front Differential Axle Intermediate Shaft Kit is a complete OEM-style replacement for the 215mm front axle on 2012–2021 Dodge Ram 1500 and Ram 1500 Classic.

Built to restore front-drive performance and reduce vibration, this kit replaces the inner intermediate shafts and all related seals, bearings and hardware. It matches factory fitment for vehicles with 3.21, 3.55 and 3.92 rear axle ratios and is supplied with precision components engineered for long service life and reliable operation under demanding use.

What parts are included and why does that matter?

The kit contains both left and right inner intermediate shafts plus the full set of installation components so you don’t have to source multiple parts separately. Having every required seal, snap ring and boot ensures proper reassembly and helps prevent early failures caused by missing or mismatched parts.

• Left and right inner shafts (intermediate shafts)
• Bearings, axle boots, oil slinger and O-rings
• Snap rings, drive pinion seal and output seal
• OE-equivalent part numbers for straightforward OEM replacement

How does this kit match OEM standards and fit my Ram 1500?

Flynsu supplies shafts and seals that correspond to the original equipment part numbers used on these model years, simplifying compatibility checks. Precision machining and heat-treated alloy steel construction mimic factory tolerances so the components install and perform like genuine parts.

• Includes OE Part# references such as 68257420AF and 68146594AB for verification
• Heat-treated alloy shaft for strength and durability
• Precision machined bearings and high-temp O-rings for reliable sealing

What improvements should I expect after replacing the intermediate shaft?

Replacing worn intermediate shafts and worn seals restores drivetrain stability, reduces front-end vibrations, and prevents fluid leaks that can damage other differential components. Results depend on the vehicle’s condition, but most owners notice smoother operation and quieter front differential behavior.

• Reduced vibration and drivetrain noise compared to worn components
• Restored sealing to prevent gear oil leaks and contamination
• Improved bearing stability during higher rotation speeds

How durable is the Flynsu shaft kit and what warranty is included?

Components are made from heat-treated alloy steel with bearings machined to tight tolerances and O-rings chosen for oil and heat resistance, giving the assembly a durable service life when installed and maintained correctly. Flynsu backs the kit with a 12-month warranty for added peace of mind.

• Heat-treated alloy for increased rigidity and wear resistance
• Oil- and high-temperature-resistant O-rings to maintain seals
• 12-month limited warranty from Flynsu

Who is this for: The Flynsu Front Differential Axle Intermediate Shaft Kit is intended for owners or technicians working on 2012–2018 Dodge Ram 1500 and 2019–2021 Ram 1500 Classic trucks with a 215mm front axle and 3.21/3.55/3.92 rear ratios. It suits anyone restoring factory drivability, fixing front differential leaks, or replacing worn inner shafts and related hardware. If you want a single purchase that includes the shafts plus all necessary seals, bearings and installation hardware to match OE part numbers, this kit provides a ready-to-install solution.