Flynsu Front Differential Intermediate Shaft Kit for 2012–2021 Ram 1500 — OE Fit, Heat‑Treated Shafts

Flynsu’s Front Differential Axle Intermediate Shaft Kit is a complete replacement assembly that restores front-axle performance for 215mm Ram 1500 applications from 2012–2021.

If your Ram 1500 shows front-axle vibration, grease loss, or noise linked to a failing inner/intermediate shaft, this kit supplies both left and right shafts plus all necessary hardware to complete a dependable swap. Built to match factory fit and function, the kit contains heat-treated alloy inner shafts, precision bearings, axle boots, seals, snap rings, oil slinger and O-rings so you can rebuild the front differential linkage without sourcing multiple parts.

What exactly comes in this intermediate shaft kit?

The Flynsu kit is packaged to be a true drop-in repair: both side shafts are included along with the wear and sealing items normally replaced during removal. OE part numbers are matched so installation follows factory tolerances.

• Left & right intermediate (inner) shafts
• Precision bearings, axle boots and snap rings
• Oil slinger, drive pinion and output seals
• High-temperature O-rings and all small fastener components
• Compatible with OE numbers: 68146594AB/AA, 68257420AF/21AF/22AF, 722N695BKA

How does this restore driveline reliability on a Ram 1500?

Replacing worn intermediate shafts eliminates play and prevents grease leakage that leads to joint wear. The shafts are heat-treated for torsional strength, and the kit’s seals and bearings are chosen to reduce friction and hold lubricant where it belongs.

• Heat-treated alloy shafts resist bending and premature failure
• Precision-machined bearings maintain concentric rotation at speed
• Durable seals and high-temp O-rings protect the joint from contamination
• Complete hardware reduces the chance of missed components during repair

Which Ram models and axle setups will this part fit?

This kit is engineered for Dodge Ram 1500 trucks with the 215mm front axle and common rear ratios—verify your vehicle’s axle code and year range before ordering. It covers 2012–2018 Ram 1500 models and 2019–2021 Ram 1500 Classic trucks when matched to the specified axle measurements and ratios.

• Fits 2012–2018 Ram 1500 and 2019–2021 Ram 1500 Classic
• Designed for 215mm front axle configurations
• Compatible with rear axle ratios 3.21, 3.55, and 3.92
• Cross-references common OE part numbers for accurate replacement

What materials and standards were used in manufacturing?

Components are manufactured with durability and service life in mind: the inner shafts use heat-treated alloy steel while seals and O-rings are formulated to withstand oil and elevated temperatures. Bearings are precision-machined to reduce noise and extend life under load.

• Heat-treated alloy steel inner shafts for improved rigidity
• High-temperature resistant O-rings and durable axle boots
• Precision bearings for stable rotation and reduced wear
• Complete kit designed to meet fitment and function similar to OE

Who is this for? The Flynsu Front Differential Axle Intermediate Shaft Kit is aimed at DIY mechanics, professional service shops, and Ram owners who need a comprehensive, OE-referenced inner-shaft replacement. Choose this kit if your truck exhibits front-axle vibration, leaking grease at the inner joint, or if you’re completing a scheduled rebuild and want to replace every wear item in one purchase. A 12-month warranty is included to protect against manufacturing defects, and the kit’s matched components reduce installation time and follow-up repairs.