INDUSTRIAL INJECTION DS4831-5068SE GM 6.5L DS4 REMAN INJECTION PUMP - 1994 CHEVY/GMC 6.5L DIESEL (VIN VERIFY)

Restore factory fueling and drivability with the INDUSTRIAL INJECTION DS4831-5068SE remanufactured DS4 electronic injection pump for the 1994 GM 6.5L diesel. Each unit is professionally rebuilt, calibrated, and tested for OE-spec performance and reliability.

Fitment

• 1994 Chevrolet/GMC 6.5L Diesel (C/K 2500/3500, Suburban, Yukon, etc.)
• Important: 1994 trucks used multiple DS4 pump variants. This 5068 pump fits vehicles originally equipped with DS4831-5068. Always verify your pump tag before ordering.

What's Included

• Remanufactured DS4 injection pump (PN: DS4831-5068SE)
• Bench-calibrated and flow-tested to OE spec
• 1-year warranty (core charge and return policies apply on the product page)

Why Choose This Pump

• Correct replacement for DS4831-5068 applications (1994 only, tag-specific)
• OE-equivalent durability and hot-start performance
• Electronic DS4 design maintains factory timing and fueling control

Recommended Parts (CPP internal links only)

• PMD (Pump Mounted Driver) & Harness Kit - 1994-2002 6.5L
• PMD Extension Cable - 40″ Relocation Lead
• PMD Resistor - Replacement
• AirDog FP-100 4G Lift/Filtration System - 92-00 6.5L
• Alternate Pump: DS4831-5521SE (fits most 1994-2000 except 5068)

Cross-Reference / Alternatives (CPP)

• Dorman 502-550 Reman Injection Pump - 94-00 6.5L
• MAHLE HS4021 Head Set - 94-98 6.5L (Std Output)
• MAHLE 4021T Cylinder Head Gasket - 94-02 6.5L

Helpful Notes

• Verify your existing pump tag (on the rear ID plate). If your tag is DS4831-5068, this is the correct replacement. If not, see the 5521SE pump above.
• The DS4 pump's PMD is a common failure point. Relocating the PMD off-pump with a harness and heatsink improves reliability.
• Bleed the fuel system and clear DTCs after installation. Perform TDC offset learn as required by service manual.

FAQ

No. The 6.5L GM diesel (1992-2002) predates the Duramax (2001+). This pump is for 1994 GM 6.5L DS4 applications, tag DS4831-5068.

Check the number on your original pump's ID tag. If it reads DS4831-5068, this reman unit is the correct replacement. If you have a different tag, use the appropriate DS4 (commonly DS4831-5521 for most 1994-2000).

PMD is typically sold separately. We recommend adding a new PMD, resistor, and relocation harness for long-term reliability (see links above).

A healthy supply pump and filtration are critical. An AirDog or equivalent improves fuel delivery and pump life, especially on older vehicles.