Nothing ruins a productive morning faster than cranking on your tractor with no luck because air got into the fuel system. If you've been reaching for the starting fluid more often than you should, or dealing with hard starts after filter changes, this little primer pump is exactly what you need. It manually pushes fuel through your Deutz system, purging air bubbles and getting you back to work without all the cranking and frustration. What You're Getting M16x1.5 thread screws directly into your existing fuel system with no modifications Durable rubber bulb stays flexible in all weather conditions Manual operation gives you complete control over fuel system bleeding Quality check valves keep fuel flowing forward instead of draining back Essential for bleeding air after fuel filter changes or running out of fuel Built for Real Farm Work This primer pump fits your Deutz Agrotron K, L, and M series tractors, plus the New Profiline models - all machines known for their German engineering and reliability. Whether you're using your K series for loader work around the farmyard, running an L series on tillage operations, or pulling heavy implements with one of the bigger M series tractors, they all depend on air-free fuel delivery to run right. Made to Last Farm equipment takes abuse from temperature swings, vibration, and exposure to diesel fuel, and this primer pump is built to handle it all. The rubber bulb won't crack in winter cold or get mushy in summer heat, and the M16x1.5 thread is precisely machined to seal properly without cross-threading when you install it. Installation Notes Installation is straightforward - just unscrew your old primer or remove the plug if you don't have one, thread in this new pump, and snug it up. Don't overtighten or you'll damage the sealing surface. After installation, pump until you feel firm resistance and see fuel moving through your clear fuel lines, which tells you the system is properly primed and ready to fire up.