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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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DEF injector | T420858

Diesel Exhaust Fluid (DEF) Injector T420858 is a key component in the SCR (Selective Catalytic Reduction) aftertreatment system used to treat exhaust gas downstream of the engine. The injector is used to inject small quantities of diesel exhaust fluid (DEF) into the exhaust upstream of a catalyst, where it vaporizes and decomposes to form ammonia and carbon dioxide. The ammonia (NH3) is the desired compound which in conjunction to the SCR catalyst, converts the NOx to harmless nitrogen (N2) and water (H2O). The purpose of the SCR system is to reduce levels of NOx (oxides of nitrogen emitted from engines) that are harmful to our health and the environment.
£818.16

Excl. VAT £681.80

£818.16

Excl. VAT £681.80

DEF pump | T420892

This part T420892 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.

DEF tank | T420348

This part T420348 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.

DEF hose | T68209716

This part T68209716 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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