Urea Pump Assembly 1819797

BG 203032 (OE 1819797): function on the vehicle

Urea Pump Assembly 1819797 is supplied by BEST GROWTH under part number 203032, cross-referenced to OE 1819797, as a direct-fit aftermarket def pumps. In service it draws diesel exhaust fluid from the tank, builds and regulates system pressure, and returns fluid during the purge cycle. Filter condition, pressure stability and heater function drive service life.

BG 203032 is built to the position defined by its OE application in truck service on platforms from DAF, Volvo, Agrale, Cummins, Volkswagen and MAN. Position, calibration and connector layout are part of the specification, so a part that physically fits is not automatically the correct part.

DEF quality is the single largest driver of pump life. Fitting a new pump into a contaminated tank simply repeats the failure.

Fitment for DAF, Volvo and Agrale and OE cross reference

BG 203032 replaces 14 OE references: 1819797, 2871880, 2880158, 4387658, 44460536, 4387305, 0444042180, 0444042024, 0444606536 and 1819797A. Always confirm the number printed on the removed part, including any supersession issued by the vehicle manufacturer.

Recorded vehicle coverage for 203032 includes DAF, Volvo, Agrale, Cummins, Volkswagen and MAN, typically on DAF CF / XF106 / Volvo; Agrale; Cummins; VW / MAN. Coverage lists are a starting point for identification, not a substitute for checking the OE number on the vehicle.

Where several OE numbers appear against one BG reference, they are supersessions or regional variants of the same specification. Ordering by 1819797 and quoting the number on your part lets our technical team confirm the variant before despatch.

Symptoms that lead to replacing 1819797

These complaints bring a vehicle in with the DAF and Volvo def pumps under suspicion. None of them prove BG 203032 has failed on its own, which is why the checks below matter before a replacement is ordered.

• long priming time after a tank refill
• frozen-line faults in cold-climate operation
• repeated dosing interruptions during a drive cycle
• pressure decay immediately after the pump stops
• pressure too low or unable to build pressure

Checks before fitting BG 203032

Aftertreatment faults are usually system faults. Working through these checks prevents a repeat failure after the new def pumps is fitted.

• Confirm DEF concentration with a refractometer; contaminated fluid destroys the pump.
• Check suction and pressure lines for kinks and crystallised blockage.
• Test pressure build-up time and decay against the manufacturer's limits.
• Inspect the DEF filter and tank strainer for contamination and crystallisation.
• Verify heater circuit and coolant valve operation before winter service.

Quality, packaging and ordering 203032

BG 203032 is manufactured and tested to aftermarket replacement standards, with electrical, leakage and functional testing carried out before packing. Bulk and retail packaging, private-label cartons and customer-specific labelling are available for distributors and workshop groups.

Send OE 1819797 or the number printed on your part, the engine code and the vehicle identification number with your enquiry, and our technical team will confirm the correct reference, current stock position and lead time before you commit to an order.

Frequently asked questions

Does BG 203032 replace OE 1819797?

Yes. BG 203032 is listed against 1819797, 2871880, 2880158, 4387658, 44460536, 4387305, 0444042180 and 0444042024. Confirm the number printed on the removed part and any manufacturer supersession before ordering.

Which vehicles does BG 203032 fit?

Recorded coverage includes DAF, Volvo, Agrale and Cummins. It is supplied as a direct-fit aftermarket def pumps. Adaptation, reset or relearn procedures required by the vehicle manufacturer still apply after installation.

Does this fault code always mean the def pumps has failed?

No. Exhaust leaks, wiring and connector damage, reductant quality, dosing performance and upstream engine faults can all produce the same codes. Validate those inputs before replacing BG 203032.