STALLING PROBLEMS? There are two main causes for stalling on the GM 6.5 diesel. The optical sensor is internal to the pump, but the PMD Driver (also know as FSD) can be replaced without removing your 6.5 diesel injection pump. Review this list of items to check before replacing your 6.5L PMD.

We now offer three options when ordering a 6.5L injection pump.

Option 1


$100 Core Charge

DS Pump with New HD PMD (read about the HD PMD here). This pump is built to OEM standards, and, in fact, is the very same pump you would purchase if you paid up to twice as much at the dealer. Don't settle for a low-quality rebuild when you can have the assurance of a high quality remanufactured unit from an OEM supplier. Covered by our 1 year warranty. This pump can also be purchased without the PMD ($675) if you have recently purchased a PMD and now have injection pump issues.

Option 2:


$100 Core Charge

Stanadyne authorized rebuilt DS pump with NEW optical sensor, poppet valve, and HD PMD. These pumps are second to none. While other rebuilders may re-use questionable electronic parts, they are replaced in this pump. We have had outstanding success with these pumps which are second to none! Fully covered by our one year parts warranty.

SPECIAL OFFER: Add an FSD Heat Sync to your 6.5 diesel injection pump order for only $90.

  • Note: If you have a 1994 truck built before January 15, 1994, we need to know the part number of your old pump in order to issue a correct replacement. This is very important. The Part number is located on the top line of the ID tag on the rear of the pump. If your part number is 5068, please be sure to select correct pump at checkout.
  • These pumps replace the following part numbers (and others):

    DS4831-5521S, 17800077, 12561307, 12561405, 12558156, 17800114, DS831-5521, DS4831-5067, DS4831-5288, DS4831-5459, DS4831-5942, 19208317, 19208315, 1022593

    Item #: SDS5521
    Availability: In Stock
    Usually ships In 1 business day
    Price: $819.00
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