This is the Alliant Power D28481, a new pencil fuel injector, not a rebuild. It is Alliant Power’s own version of the Stanadyne 28481 and replaces John Deere RE36935. It is the injector for the naturally aspirated 3029D, 4039D, 6059D and 6068D engines, the later 300 Series build, as used in machines such as the 5200 and 5300 tractors and the non-turbo 310C, 310D, 315C and 315D backhoes. It is the non-turbo partner to the D28485.

A pencil injector that is worn or stuck shows up as a miss, white or black smoke, a fuel knock, hard starting or fuel wash on one cylinder. Pencil injectors for these engines look almost the same from one number to the next, but the nozzle and the opening pressure differ, so match the number stamped on the body of your old injector before you order. One injector per cylinder.

Specifications

Fits / Applications

• John Deere 3029D, 4039D, 6059D and 6068D engines, naturally aspirated
• John Deere 5200 and 5300 tractors
• John Deere 310C, 310D, 315C and 315D backhoe loaders with the non-turbo engine
• Engines that use Stanadyne 28481 or John Deere RE36935. Match the number on your old injector.
• Turbocharged engines of this family take the D28485 instead
• One injector per cylinder

Pencil injectors seal on the tip and at the carbon stop seal, so clean the bore, fit new seals and tighten the clamp evenly to the John Deere figure. Do not bend the body or clamp it in a vise. Fit new leak-off boots or grommets if the old ones are hard.

Part Numbers & Cross Reference

Stanadyne (genuine version) 28481  ·  John Deere RE36935

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

What is the difference between the D28481 and the D28485?

The D28481 is for the naturally aspirated 3029D, 4039D, 6059D and 6068D engines and replaces RE36935. The D28485 is for the turbocharged engines and replaces RE36939. They do not interchange.

Is the D28481 a Stanadyne injector?

No. It is Alliant Power’s own new pencil injector, built as the Alliant Power version of Stanadyne 28481.

How do I know my engine takes this one?

Read the number on the body of your old injector. If it says 28481 or your parts book calls for RE36935, this is the match. If you are not sure, call 530-668-0818 with the engine serial number.

Is it new, and do I send a core back?

It is a new injector, not a rebuild, so there is no core to return.

Related Parts

• John Deere 4039T, 6059T, 4045T & 6068T Turbo Pencil Fuel Injector (RE36939) | Alliant Power D28485 New
• John Deere 4045D & 6068D PowerTech Pencil Fuel Injector | Alliant Power D32262 New (RE60062)
• John Deere 4045H/T & 6068H/T Pencil Fuel Injector | Stanadyne 29279 New (RE48786)
• John Deere 6068T & 6068D 6.8L DE10 Fuel Injection Pump | Stanadyne 06320 New (RE568067)
• Stanadyne DB2, DB4 & DB 310 Diesel Injection Pump Rebuild Service

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. We verify fitment against your engine serial, VIN or build date before anything ships, so the right part arrives the first time.

Not sure the injectors are the problem? We test and diagnose in-house before you buy. See our common rail injector testing and rebuild service.