TeraFlex 3333218 Tera30 HD Front Left Inner Axle Shaft 30-Spline with Outer Stub & U-Joint

The TeraFlex 3333218 is a heavy-duty left front inner axle shaft assembly designed specifically for the TeraFlex Tera30 HD Front Axle on 2007–2018 Jeep Wrangler JK and JK Unlimited models. This fully assembled unit arrives ready to install, pairing a 30-spline inner axle shaft with a 32-spline outer stub shaft and a Spicer 1350-Series (Rubicon) U-joint for a direct upgrade over the weak factory shafts.

Constructed from dual-heat-treated 4340 chromoly steel and profiled for optimal strength, these shafts feature rolled splines for improved durability under hard off-road use. The 30-spline inner shaft provides greater torsional strength than the standard 27-spline configuration, making this an ideal upgrade for builds running larger tires, lockers, or aggressive trail use. Compatibility with the larger Dana 1350-Series U-joint ensures this assembly handles the added stress of high-lift and high-torque applications.

What's Included:

• Left Front Inner Axle Shaft – 30-Spline, 18.8 inches (Part # 3303218)
• Front Outer Stub Shaft – 32-Spline (Part # 3304104)
• Rubicon U-Joint – Spicer 1350-Series (Part # 5-7166X)

Specifications:

• Spline Count (Inner): 30-Spline
• Inner Shaft Length: 18.8 inches
• Spline Count (Outer Stub): 32-Spline
• U-Joint Type: Spicer 1350-Series (Rubicon)
• Material: Dual-heat-treated 4340 chromoly steel
• Position: Left Front Inner
• Compatible Axle: TeraFlex Tera30 HD Front Axle

This assembly ships fully pre-assembled for a straightforward installation into the Tera30 HD Front Axle housing, saving time in the shop or on the trail.