The Spicer TTC Magnetic Plug, part number 50-39-20 or 503920, is a drain or fill plug designed to capture metallic debris suspended in gear oil, helping maintenance crews detect wear before it becomes a failure. Magnetic plugs are a standard service item on transfer cases, axle housings, and manual transmissions, and this plug is sold individually. Cross-referenced under part number SX50-39-20 by Tramec. Pro Gear and Transmission carries genuine Spicer TTC parts. Not sure this is the right plug for your unit? Give us a call and we can help you confirm proper fit.
Features
Genuine Spicer TTC magnetic drain or fill plug
Part number 50-39-20 or 503920; also cross-referenced as SX50-39-20
Magnetic design captures metallic particles in gear oil to aid wear detection
Sold as an individual unit
Suitable for transfer case, axle, or transmission service applications
