V2403 Swirl Cylinder Head - Kubota KX155/KX161 Dedicated

As a core power component of Kubota mini excavators, the V2403 swirl cylinder head is a dedicated accessory for the V2403 swirl engine, specifically designed for Kubota KX155 and KX161 mini excavators. It is widely used in various engineering scenarios such as municipal construction, landscaping, farmland reclamation, and civil engineering. Unlike ordinary direct-injection cylinder heads, this swirl cylinder head features a dedicated combustion chamber structure, offering higher fitting precision and stronger compatibility under different operating conditions. It is the preferred accessory for equipment failure repair, machine overhaul, and parts replacement. The product is fully compatible with original factory standard part numbers: 16873-03042, 16873-03040, and 1G790-03043, covering both new and old batches of models on the market, requiring no modification or adjustment.

Specializing in the precision manufacturing of engine parts for construction machinery, Hebei Keluo Construction Machinery Co., Ltd. has been deeply involved in the supply of parts for all Kubota engine models for many years, accurately grasping the operating characteristics and parts shortcomings of the V2403 vortex engine. Most ordinary replacement cylinder heads on the market suffer from problems such as vortex angle deviation, thin material, easy failure at high temperatures, and poor combustion efficiency. Addressing these industry pain points, the company has optimized its production process, avoiding the use of generic casting processes and strictly adhering to the specific technical parameters of the vortex engine. From raw material selection, one-piece casting, precision CNC grinding to full-item quality inspection, every step is strictly controlled to create a dedicated high-quality cylinder head suitable for the high-intensity operation of the KX155 and KX161 engines.

In terms of hardware quality, this V2403 vortex cylinder head is made of thickened high-density cast iron, integrally cast, and supplemented with professional stress-relieving aging treatment to completely eliminate internal stress in the casting, resulting in a compact, robust, and highly resilient overall structure. Designed for the harsh working conditions of mini excavators, including frequent start-stop cycles, alternating high and low loads, and prolonged outdoor operations, this product boasts excellent high-temperature resistance, high-pressure resistance, vibration resistance, and deformation resistance. It can withstand the high-temperature and high-pressure impacts of the engine combustion chamber for extended periods, fundamentally preventing common faults such as cylinder head warping, water channel cracking, air and water leaks, cylinder head gasket failure, and oil-water mixing. This effectively reduces equipment downtime and significantly improves continuous operation capability and overall machine lifespan.

A key highlight is its custom-designed vortex intake structure, precisely replicating the original factory vortex combustion chamber angle and air passage trajectory—an advantage unmatched by ordinary general-purpose cylinder heads. The well-defined vortex intake design allows the intake airflow to form a stable vortex, promoting thorough mixing and atomization of diesel and air, resulting in more complete combustion and stronger power. It effectively improves common problems such as unstable idling and insufficient power, making the engine run more smoothly and provide more timely power response, balancing operational performance and fuel economy, and is suitable for long-term, high-frequency engineering operations.

Keluo Construction Machinery's cylinder heads can be directly installed and used, saving time and increasing efficiency. The product boasts high assembly precision and stable sealing performance, and supports individual replacement of single vulnerable parts, effectively reducing subsequent maintenance costs. It is a high-performance, cost-effective spare part for the repair and replacement of Kubota KX155 and KX161 excavators.