DIPSTICK TRANSMISSION FLUID / Oil Level auto automatic W/ INSTRUCTIONS + FREE Locking Pin. MODEL / CLASS : C, CLK, E, ML, S, SL, SLK AMG 4MATIC SPRINTERS WITH INSTRUCTIONS: Maintain and monitor transmission fluid level EASY TO USE: Tool with lock pin detailed instructions OE PART NUMBER: 140589152100 INCLUDES LOCK PIN: ( must be replaced breaks on removal)