Bosch VP44 Injection Pumps

Rebuilt Bosch VP44 injection pumps for 1998.5 to 2002 Dodge Ram 2500 and 3500 pickups with the 5.9L 24-valve Cummins, plus the VP44s used on Cummins ISB and QSB mid-range and industrial engines, John Deere 6068 engines and AGCO Sisu Power engines. Every pump is Bosch Authorized Remanufactured, rebuilt by Valley Fuel Injection & Turbo in our Woodland, California shop, calibrated for its application and sold on exchange against your old pump.

Not sure the pump is the problem? Hard hot starts, dead pedal, surging and codes P0216 or P1688 are the classic signs, and our VP44 failure symptoms guide walks through how to confirm it before you buy.

Which VP44 do I need?

VP44s are separated by application, output and system voltage, and the Bosch number on the pump settles it. A 24-volt pump will not run on a 12-volt system. Match the number and it drops in.

Dodge Ram 2500 and 3500 pickups, 5.9L 24-valve

1998.5–1999 six-speed truck that is not the High Output? Call with your engine serial number before you order and we will confirm the right pump.

Cummins ISB/QSB, John Deere and AGCO Sisu engines

Pumps marked Call are built to order: we build that pump on exchange against your core instead of holding it on a shelf, because most industrial and ag numbers move too slowly to stock. Call (530) 668-0818 for price and turnaround, and if the number on your pump is not in these tables, read it to us and we will match it.

Bosch Authorized Remanufactured and Core Exchange

Valley Fuel Injection & Turbo is a Bosch Authorized Service dealer and has run a diesel fuel injection and turbo shop since 1993. We rebuild every VP44 in-house and bench-test it on Bosch equipment to confirm it meets factory spec before it ships. We offer core exchange, local Northern California service from our Woodland shop near Sacramento, and nationwide mail-in so you can send your pump from anywhere.

Your old pump is the core. Send it back within 30 days and the core charge is refunded, provided it is rebuildable: housing intact, nothing missing, no fire damage. Full terms are on the exchange program page, and the mail-in rebuild service covers how to pack and ship one.

Protect Your Pump With a Lift Pump

The VP44 is extremely sensitive to inlet pressure. A weak or failing lift pump starves the VP44 and kills it early, so a lift pump upgrade such as a FASS or AirDog is standard protection and one of the smartest things you can do to extend the life of a rebuilt pump.

Check inlet pressure before you condemn the pump and again after the new one is in. Most repeat VP44 failures we see are lift pump failures wearing a different hat.

Before you replace it, rule these out

A VP44 gets blamed for problems it did not cause. It is worth ten minutes to check:

• Fuel supply pressure at the VP44 inlet, measured while driving, not at idle. Below roughly 10 psi under load is a lift pump problem.
• Battery and ground condition. Low voltage and corroded grounds produce codes and no-starts that mimic a failed pump.
• The APPS / throttle position sensor. Dead pedal is a classic VP44 symptom and also a classic APPS symptom.
• P1688 versus P0216. P1688 is the ECM reporting that the pump’s own control module has stopped talking. P0216 is a timing fault. They point different directions.

We bench-test pumps and injectors and can tell you what the numbers say rather than guessing. If you are near Sacramento, bringing the truck in is the fastest way to settle it.

Warranty and shipping

Every VP44 we rebuild carries 12 months, unlimited mileage on parts and labor against defects in materials and workmanship, and 30 days on electrical components. See the full warranty terms. We ship nationwide from Woodland, California; in-stock orders process in 1–2 business days. See the shipping policy.

Common questions

Can I just replace the PSG module myself? The module is matched and calibrated to the pump. Swapping one without recalibration on a bench is how people end up with a pump that runs worse than the one they started with.

Do I need to have my injectors done at the same time? Not automatically. Test them. Six tested injectors cost far less than six replaced ones, and the test tells you whether the rough running was ever the pump at all.

Do you rebuild my own pump, or send a different one? Both options exist. Exchange gets you back on the road fastest; mail-in rebuild returns your own unit. Ask when you call.

Other injection pump families

VP30 · VE · CP3 · CP4 · Stanadyne

Call for Pricing on Your VP44

Our remanufactured VP44 pumps are sold on a build and exchange basis. Call us to talk through your application, core options, and turnaround, and we will build the right pump for your truck.
Call 530-668-0818