Jetuplusllc chrome mounting adapter for Eaton-Fuller 13/15/18 & Super 10 — 1/2"-13 thread, secure two-screw clamp

This compact, chrome-plated adapter provides a sturdy thread-on connection so aftermarket shift knobs with a 1/2"-13 spindle can be used on Eaton-Fuller transmissions. Built for professional drivers and DIY technicians, the piece fastens securely to the Eaton-Fuller style shifter and includes an inner mounting base with two set screws for a reliable hold. The packaging does not include the chrome ball or the universal screw-on knob (part number 70589B); it is the adapter component needed to bridge thread standards.

How does this adapter make changing a shift knob easier?

The adapter eliminates incompatible threads by providing a standardized 1/2"-13 thread-on interface that mates with Eaton-Fuller 13/15/18 and Super 10 style shifters. Rather than replacing the entire lever or sourcing a specific knob, you fit this adapter between the shifter and your preferred knob to achieve a correct, stable connection.

• Converts Eaton-Fuller style shifters to accept 1/2"-13 threaded knobs
• Chrome finish presents a clean, corrosion-resistant exterior
• Inner base with two screws secures the adapter to the shifter shaft
• Permits use of aftermarket knobs without modifying the transmission lever

What materials and build details should I expect?

Crafted with a chrome plating over a durable base metal, this adapter balances visual appeal with practical wear resistance. The included inner mounting base uses two screws to clamp onto the Eaton-Fuller style shaft, offering a mechanical connection that resists loosening under normal driving forces.

• Chrome-plated exterior for a polished look and rust resistance
• Inner mounting base included with two set screws for secure fitment
• Manufacturer part number: 70589B for identification and replacement
• Designed specifically for Eaton-Fuller 13/15/18 and Super 10 transmissions

Will this adapter fit my truck and do I need extra parts?

It fits Eaton-Fuller 13, 15, 18 and Super 10 speed shifter styles when you want to install a 1/2"-13 threaded knob. You may already own the compatible knob; if not, you’ll need a 1/2"-13 threaded knob or the universal chrome ball knob (sold separately as part number 70589B) to complete the installation.

• Compatible with Eaton-Fuller 13/15/18 and Super 10 shifters
• Requires a 1/2"-13 threaded knob (not included)
• Mounting screws included with the inner base for assembly
• No welding or permanent modification of the lever required

Who is this for? This adapter is ideal for truck drivers, fleet maintenance teams, and garage hobbyists who want to personalize or replace a shift knob on Eaton-Fuller transmissions without changing the shifter assembly. If you have a 1/2"-13 threaded aftermarket knob and an Eaton-Fuller 13/15/18 or Super 10 shifter, this adapter provides a clean, chrome-finished connection that’s easy to install and built to last.