The Delphi 8923A170G is a new, genuine Delphi DP200 rotary fuel injection pump built for Perkins. It carries Perkins numbers 2644G644 and UFK4G644, and Delphi lists its application as Perkins 4NA LP33 (4NA: four-cylinder, naturally aspirated). Delphi 8923A171G through 8923A179G are listed as alternate builds of the same pump.

DP200 pumps are usually replaced for hard starting, low power, smoke, fuel leaks, or wear from water or dirt in the fuel. Perkins DP200 pumps are lock timed at the factory, not housing timed like John Deere DP200 pumps, so install it by the Perkins procedure for your engine. Other DP200 pumps are listed for the same Perkins 4NA LP33 engine at different settings, so match the Perkins number on your old pump label.

Specifications

Fits / Applications

• Perkins industrial engines listed by Delphi as 4NA LP33 that use Perkins pump 2644G644 / UFK4G644

Perkins DP200 pumps are lock timed, not housing timed. The pump shaft is locked (by a locking screw, or by a factory hub and timing pin on some engines) at the timing position. Keep the shaft locked until the drive gear is fitted and torqued, then release the lock as the Perkins manual for your engine directs. Do not turn the shaft by hand; if it turns by accident the pump has to be re-timed on a bench. Never steam clean or pour cold water on a warm pump, and bleed the injector lines one at a time so the system does not air lock.

Part Numbers & Cross Reference

Perkins 2644G644  ·  Perkins UFK4G644  ·  Perkins 2644G624  ·  Delphi (alternate build) 8923A171G  ·  Delphi (alternate build) 8923A172G  ·  Delphi (alternate build) 8923A173G  ·  Delphi (alternate build) 8923A174G  ·  Delphi (alternate build) 8923A175G

Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.

Frequently Asked Questions

Which Perkins engine and pump numbers does the Delphi 8923A170G cover?

Delphi lists its application as Perkins 4NA LP33, a four-cylinder, naturally aspirated engine. It carries Perkins numbers 2644G644 and UFK4G644 and also crosses to Perkins 2644G624. Delphi 8923A171G through 8923A179G are listed as alternate builds of the same pump.

Can I use Delphi 8923A140G or 8923A160G in place of the 8923A170G?

Order by the Perkins number on your pump label. Delphi 8923A140G (Perkins 2644G831) and 8923A160G (Perkins UFK4G641) are also listed for Perkins 4NA LP33 engines but at different settings. Call 530-668-0818 with the label number or the Perkins engine serial number and we will confirm the match at no charge.

Is the 8923A170G lock timed or housing timed?

Lock timed at the factory, not housing timed like John Deere DP200 pumps. Keep the shaft locked until the drive gear is fitted and torqued, then release the lock as the Perkins manual for your engine directs. If the shaft turns by accident, the pump has to be re-timed on a bench.

Is the 8923A170G a new pump, and is there a core charge?

Yes, it is a new, genuine Delphi DP200 rotary injection pump in original packaging. There is no core charge and nothing to send back.

Related Parts

• Perkins Darwin 4NA LP2 DP200 Fuel Injection Pump | Delphi 8920A450G New (Cat 193-0160)
• Caterpillar 420D & 908 Perkins 4-Cyl Turbo DP200 Fuel Injection Pump | Delphi 8923A050G New
• Delphi DP200 & Lucas CAV DPA Injection Pump 12V Stop Solenoid | Delphi 7185-900W New

Why Buy From Valley Fuel Injection

We are a diesel fuel-injection and turbocharger shop in Woodland, CA, rebuilding pumps, injectors and turbos on our own benches since 1993, not a drop-ship storefront. When you call, you talk to the people who test these units. Confirm fitment against your engine serial, VIN or build date before you order. Call us and we will help you match the right part.

Not sure the pump is the problem? We test and diagnose in-house before you buy. See our DP200 injection pump rebuild service.