This is the Delphi EX631004, an A type electronic unit injector for the Volvo D12 12.1L, remanufactured by Delphi. Catalogs list it for the D12A and D12C versions of the engine. It replaces Volvo 3964404 and 8113092, and the Delphi number is BEBE4B01004. It is sold one at a time, and a refundable core applies.

Delphi lists several A type injectors for the D12, each under different Volvo numbers. This one is not the same as the EX631008, which replaces Volvo 8113411 and 8170998. Order by the Volvo or Delphi number on your old injector, not by engine model alone.

Specifications

Fits / Applications

• Volvo D12 12.1L, D12A and D12C versions
• Engines whose injector carries Volvo 3964404 or 8113092
• Volvo VN trucks with the D12: two catalogs list the VN, with different years, so go by the injector number
• Not the same as Delphi EX631008 (Volvo 8113411, 8170998), another D12 A type injector

Part Numbers & Cross Reference

Delphi EX631004  ·  Delphi BEBE4B01004  ·  Volvo 3964404  ·  Volvo 8113092

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 engine does the EX631004 fit?

The Volvo D12 12.1L. Catalogs list it for the D12A and D12C versions, on engines whose injector carries Volvo 3964404 or 8113092.

What numbers does the EX631004 replace?

Volvo 3964404 and 8113092. The Delphi number is BEBE4B01004.

Is the EX631004 the same as the EX631008?

No. Both are A type injectors for the Volvo D12, but the EX631008 replaces Volvo 8113411 and 8170998. Order the one that matches the number on your old injector.

Is it new or remanufactured, and is there a core?

It is remanufactured by Delphi. A refundable core applies, and it comes back when we receive your old injector.

Related Parts

• Volvo D12 12.1L A Type Electronic Unit Injector (Volvo 8113411, 8170998) | Delphi EX631008 Remanufactured
• Volvo D13 & Mack MP8 12.8L EPA14 E3.5 Unit Injector (Volvo 85020428) | Delphi EX631085 Remanufactured
• Volvo D12D 12.1L E3 Unit Injector (Except 465 hp) | Delphi EX631016 Remanufactured (Volvo 20810168)
• Mack E7 E-Tech & ASET 12.0L Electronic Unit Pump (EUP) | Bosch 0986445011 Remanufactured (Mack 313GC5233M)

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.