Fuel Injection Plunger and Barrel

Fuel Pump Plunger and Barrel


The Plunger and Barrel assembly is found in many fuel injection systems, where a plunger reciprocates within a stationary barrel.  The plunger operates by moving upwards and downwards, and its function relates to helping build up the pressure of the diesel fuel before it gets atomized into the combustion chamber. Furthermore, a constant circulation of fresh fuel flow is required to renew the fuel supply within the supply chamber, to help prevent overheating, and to prevent the accumulation of air within the system – for the reasons above, we see that the plunger function is highly important.


Different components like the in-line injection pumps, unit injectors, and unit pumps may similarly generate pressure via a pump plunger. As we can see, there are many different types of plungers and barrels – to ensure that you get the correct part with a perfect fit, please let us know your required plunger part number.


Looking to replace the plunger and barrel?

Bosch Plunger, Zexel Plunger, Disa Plunger, and more – we sell wholesale!


If you are experiencing a fuel pump plunger leak, crack, or for any reason,  require to replace the plunger and barrel, do not fret – simply enquire with us at Sealand Turbo-Diesel Asia. We are a wholesale distributor and stockist of diesel fuel injection parts, including plunger and barrel assemblies by leading brands such as Bosch, Zexel, Disa! With over 50 years of industry experience, we are dedicated to supplying genuine spare parts to other distributors, workshops, and end-users in Singapore and abroad. Our wide range of plunger part numbers includes the popular 1P6400, 9H5797, and more. We make buying fuel injection spare parts convenient and hassle-free – simply enquire with us and let us know what spare parts you require, our experienced Sales Team will be delighted to assist!

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