This is the Delphi EX631079, an E3.5 electronic unit injector remanufactured by Delphi, the original maker. Catalogs list it for the 13 liter Volvo D13 (D13H) and Mack MP8 at the EPA10 / OBD13 emissions level, which some catalogs write as US13. Delphi’s own injector numbers for it are BEBE4L11001 and BEBE5L11001. It replaces Volvo and Mack 22027808, 21458369, 21119665, 21599153, 21092434, 85003658, 85013611, 85013612, 85013160, 85143382 and 85143385. It comes with a stainless injector cup, the hold down bolt and the O-rings. A refundable core applies.

Volvo and Mack used more than one E3.5 injector on these engines, so order by the number on your old injector. The later EPA14 (GHG) D13 and MP8 are listed under a different Delphi number, EX631085 (Volvo 22479124, 85020428). The 11 liter Volvo D11 and Mack MP7 are listed under the Delphi EX631078 (Volvo 22027807). A rough idle, a miss on one cylinder, fuel in the oil, hard starting or a cylinder balance fault are the usual reasons these get replaced. The engine takes six injectors.

Specifications

Fits / Applications

• Volvo D13 (D13H) 13.0L
• Mack MP8 13.0L
• Emissions level: EPA10 / OBD13 (some catalogs write US13)
• The later EPA14 (GHG) D13 and MP8 are listed under Delphi EX631085 (Volvo 22479124, 85020428)
• The 11 liter D11 and MP7 are listed under Delphi EX631078 (Volvo 22027807)
• Six injectors per engine

This injector has the conical seat and comes with its own stainless steel cup. Fit the new cup, hold down bolt and O-rings that come with it. Delphi’s installation bulletin for its remanufactured E3 unit injectors (HLN 19/01) says the cup must be changed every time an injector is replaced, and that every injector in one engine must have the same seat style: do not mix conical seat injectors with older flat seat injectors that sit in copper cups. Follow the Volvo or Mack service procedure for cup installation and for anything the engine computer needs after an injector change.

Part Numbers & Cross Reference

Delphi EX631079  ·  Delphi injector number BEBE4L11001  ·  Delphi injector number BEBE5L11001  ·  Delphi injector number BEBE4G02001  ·  Delphi injector number BEBE4G12001  ·  Delphi HRE374  ·  Volvo / Mack 22027808  ·  Volvo / Mack 21458369  ·  Volvo / Mack 21119665  ·  Volvo / Mack 21599153  ·  Volvo / Mack 21092434  ·  Volvo / Mack 85003658  ·  Volvo / Mack 85013611  ·  Volvo / Mack 85013612  ·  Volvo / Mack 85013160  ·  Volvo / Mack 85143382  ·  Volvo / Mack 85143385  ·  PAI 891948X

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 the EX631079 fit a Volvo D11 or Mack MP7?

Delphi lists a separate injector for the 11 liter D11 and MP7: the EX631078, Volvo 22027807. The EX631079 is listed for the 13 liter D13 and MP8. Order the one that matches the number on your old injector.

What numbers does the EX631079 replace?

Volvo and Mack 22027808, 21458369, 21119665, 21599153, 21092434, 85003658, 85013611, 85013612, 85013160, 85143382 and 85143385. The Delphi injector numbers are BEBE4L11001 and BEBE5L11001.

Does it fit the later EPA14 (GHG) D13 and MP8 engines?

Catalogs list a different injector for those: Delphi EX631085, Volvo 22479124 and 85020428. Call 530-668-0818 with your engine serial number or VIN and we will check which one you need.

Who remanufactured it, and what comes with it?

Delphi, the original maker of the E3 injector, remanufactured it. It comes with a stainless injector cup, the hold down bolt and the O-rings. A refundable core applies.

Related Parts

• Volvo D11 & Mack MP7 11.0L EPA10 E3.5 Unit Injector (Volvo 22027807) | Delphi EX631078 Remanufactured
• Volvo D13 & Mack MP8 12.8L EPA14 E3.5 Unit Injector (Volvo 85020428) | Delphi EX631085 Remanufactured
• Volvo D11 & Mack MP7 11L EPA14 E3.5 Unit Injector (Volvo 85020426) | Delphi EX631084 Remanufactured
• Volvo FH, FH16 & FM 24V DEF (Urea) Supply Module, Volvo 21576178 & 23753841 | Bosch 044404227G 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. We verify fitment against your engine serial, VIN or build date before anything ships, so the right part arrives the first time.