SG Tool Aid Diesel Tester for Mercedes Benz-Vehicles

Features and Benefits:

• Has piggy-back 12mm-1.25 & 18mm-1.50 threads for testing at glow plug port.
• Applications: 12mm is for Model 300 & 300 Turbo Diesel from 1978 and the 250 & 350 Turbo models. 18mm is for all regular Mercedes Benz engines & Model 300 prior to 1978.