5262613 3929333 4947109 Aftercooler For Cummins 4BT3.9 Engiens

Product Overview：

THE 5262613, 3929333, 4947109 fit Cummins 4BTA3.9 / 4BTAA3.9 3.9L turbo diesel engines.Built for heavy-duty variable-load operations, this integrated manifold intercooler fixes low-speed cooling shortages common to air-cooled types. It rapidly lowers hot turbo intake air, stabilizes air-fuel mix, boosts power and fuel efficiency, and satisfies strict emission & durability standards for construction machinery, farm equipment and stationary power under tough working conditions.

Key Features:

✅The 5262613, the latest upgrade interchangeable with obsolete 4947109 & vintage 3929333, directly fits 120–145HP Cummins 4BT3.9/4BTA3.9 mechanical & common rail engines.

✅ 3929333 (only for <120HP old rig restoration, weak pressure resistance & heat leakage from old brazing) and

✅4947109 (same unimproved leak-prone core for reference only), it uses reinforced fins, optimized water channels and premium vacuum brazing for leak-free efficient cooling, satisfies Euro 2/3 standards for heavy-duty harsh environments, delivers plug-and-play installation with premium seals, and is a cost-effective globally mainstream aftermarket part with stable inventory.

Application：

✅Construction Machinery: Loaders, Excavators, Bulldozers, Air Compressors

✅Commercial Vehicles: Dongfeng Kinland, Light Trucks, Medium-sized Buses

✅Stationary Power Equipment: 4BT Generator Sets, Water Pump Units

✅Marine Auxiliary Engines: Small Fishing Boats, Inland Waterway Vessel 4BT Auxiliary Engine Cooling Systems

Why Choose US?

✅100% genuine Cummins DCEC parts

✅Professional technical support for fitment verification・

✅Competitive wholesale pricing

✅Fast global shipping