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Selective catalytic reduction (SCR) systems remove harmful gases from the exhaust gas to meet the requirements of emissions standards. Uses the injection of Diesel Exhaust Fluid (DEF), a urea-based liquid into the exhaust stream to convert harmful nitrous oxides to nitrogen gas and water. The SCR is combined with the diesel particulate filter (DPF) to deliver clean emissions. Perkins aftertreatment and engines are an integrated system and are specified, built and tested for optimum fuel economy, performance and to reliably meet emissions standards.

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T420858 - Injector

DEF injector | T420858

As one of the most complex parts of a diesel engine the injector, or injector nozzle is required to withstand the pressures and temperatures inside the cylinder to produce an accurate dose of a fine fuel mist to ensure a thorough burn in the cylinder. With extremely small tolerances within injectors, 1 to 3 microns, and very high fuel pressures, issues can arise such as fuel contamination causing wear, or coking of external surfaces from an incomplete burn. This clogging can affect the diesel fuel delivery, resulting in increased fuel consumption and a noticeable loss of power. As a key component, Perkins injectors are designed specifically for your engine with precision drilled nozzle holes, needle to body gap, and needle design for positive seating and exact fuel delivery to deliver the right fuel flow giving you best power, performance and fuel consumption from your engine.
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$1302.82 $1302.82
T420892 - DEF pump

DEF pump | T420892

This part is not available direct from Perkins, as application and service information is required to install the part. Your local Perkins distributor or dealer can help you find the right part, and will be happy to install the part for you should you wish. Please use the link supplied to request pricing and support, and we will ensure our local distributor contacts you by the end of the next working day.
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T420348 - DEF tank

DEF tank | T420348

This part is not available direct from Perkins, as application and service information is required to install the part. Your local Perkins distributor or dealer can help you find the right part, and will be happy to install the part for you should you wish. Please use the link supplied to request pricing and support, and we will ensure our local distributor contacts you by the end of the next working day.
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T68209716 - DEF hose

DEF hose | T68209716

This part is not available direct from Perkins, as application and service information is required to install the part. Your local Perkins distributor or dealer can help you find the right part, and will be happy to install the part for you should you wish. Please use the link supplied to request pricing and support, and we will ensure our local distributor contacts you by the end of the next working day.
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