When you're hearing more exhaust noise than usual and catching whiffs of diesel fumes near your tractor, chances are your exhaust pipe has finally given up the fight. These David Brown 90 and 94 series tractors put in long days, and their exhaust systems take a beating from heat cycles, road spray, and general farm abuse. This black enamel finished exhaust pipe gets you back to quiet, clean operation. What You're Getting 57mm outside diameter pipe designed specifically for 4-cylinder David Brown engines Durable black enamel finish that resists corrosion and heat damage Direct replacement that bolts right up using existing mounting points Heavy-gauge construction built to handle the thermal stress of diesel operation Built for Real Farm Work This exhaust pipe fits the workhorse tractors that handle everything from tillage and planting to hay operations and loader work. The 1290 and 1390 models in the 90 series, along with the 1294 in the 94 series, are dependable machines that farmers rely on for serious agricultural work where exhaust integrity matters for both performance and operator comfort. Made to Last Farm exhaust systems face tough conditions—constant temperature swings from startup to full-load operation, corrosive exhaust gases, and exposure to field debris. This replacement pipe uses quality materials and proper wall thickness to resist the thermal cycling and corrosion that eventually claim original equipment. The black enamel coating provides extra protection against the elements. Good to Know This pipe is specifically for 4-cylinder engines and won't fit the 1490 model. Before installation, check your exhaust manifold and gaskets—if the pipe failed from age, other components might need attention too. Always let the engine cool completely before working on exhaust components, and use new gaskets for leak-free connections.