The Delphi 8923A050G is a new DP200 rotary injection pump for a Perkins 4-cylinder turbo diesel that Delphi lists as Perkins Darwin 4T, list LP18, 2200 rpm. It carries Caterpillar service number 197-3901 and Perkins numbers 2644F528 and UFK4F528. Parts catalogs list it for Caterpillar 420D backhoe loaders and Caterpillar 908 compact wheel loaders built with this engine.

Shops replace a DP200 for hard starting, low power, smoke, fuel leaks or internal wear from water and dirt in the fuel. Check your machine before you order: the 420D and 908 were built with more than one engine and pump. Other 420D builds use Delphi DP210 pumps (for example 9320A340G, Cat 249-9226), and other 908 builds use different pumps too.

Specifications

Fits / Applications

• Perkins 4-cylinder turbo diesel, Delphi application Perkins Darwin 4T LP18 2200
• Caterpillar 420D backhoe loader, builds with this engine and pump (Cat 197-3901)
• Caterpillar 908 compact wheel loader, builds with this engine and pump

Perkins DP200 pumps are lock-timed. A new pump may come with its drive shaft locked by a locking screw. Set the engine to top dead center on No. 1 cylinder, compression stroke, before the pump goes on, and never turn the engine or the pump shaft while the screw is locked on the shaft. Once the pump and gear are fastened, put the spacer under the locking screw so the shaft is free. Fit a new flange O-ring, use clean fuel and new filters, and bleed the system before starting. Follow the engine service manual for torque values.

Part Numbers & Cross Reference

Caterpillar 197-3901  ·  Perkins 2644F528 (also printed U2644F528)  ·  Perkins UFK4F528  ·  Delphi alternates 8923A051G through 8923A059G, 8923A050T, 8923A051T

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

Will Delphi 8923A050G fit every Cat 420D or 908?

No. The 420D and 908 were built with more than one engine and pump, and this one is for builds that carry Cat 197-3901. Other 420D builds use Delphi DP210 pumps, for example 9320A340G (Cat 249-9226).

What Cat and Perkins numbers does 8923A050G cross to?

Caterpillar 197-3901 and Perkins 2644F528 (also printed U2644F528) and UFK4F528. Delphi alternates are 8923A051G through 8923A059G, 8923A050T and 8923A051T.

Is Delphi 8923A080G the same pump as 8923A050G?

No. 8923A080G is built for JCB and is calibrated differently, even though it looks the same. Call 530-668-0818 with the Perkins or Cat number from your pump plate, or your engine serial number, and we match it at no charge before anything ships.

Is the 8923A050G new, and how does it arrive for timing?

It is a new Delphi DP200 pump, sold outright with no core charge. Perkins DP200 pumps are lock-timed, and a new pump may come with its drive shaft locked by a locking screw. Never turn the engine or the pump shaft while the screw is locked on the shaft.

Related Parts

• Delphi DP200 & Lucas CAV DPA Injection Pump 12V Stop Solenoid | Delphi 7185-900W New
• Perkins Darwin 4NA LP2 DP200 Fuel Injection Pump | Delphi 8920A450G New (Cat 193-0160)
• Perkins 1104C-44T & Cat 3054C DP210 Fuel Injection Pump | Delphi 9323A350G New
• Perkins 1104C-44T & Cat 3054C DP210 Fuel Injection Pump | Delphi 9320A420G New (Perkins 2644H024)

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.