VP44 20X 24-Volt Injection Pump (ISB & QSB Applications) 0470506041 – Remanufactured by Valley Fuel Injection, Bosch Certified Specialists
The VP44 20X is a remanufactured Bosch injection pump built for Cummins 5.9L ISB and QSB industrial and commercial engines, including those found in agricultural, construction, and medium-duty equipment. This pump is the 24-volt electronic version, designed to match standard electrical systems used in most medium to heavy-duty Cummins-powered platforms.
Precision-calibrated and tested on Bosch-certified test benches, this pump is engineered to deliver accurate fueling, smooth operation, and long-term durability under demanding conditions.
Each IPVR20X is rebuilt in the USA by Bosch-certified diesel specialists using genuine OEM components and includes all Bosch factory updates. It is designed as a direct-fit replacement for Bosch part number 0470506041, commonly used in non-automotive Cummins applications.
Backed by a 1-year unlimited mileage warranty, this pump is ideal for fleet maintenance, commercial engine repair, or equipment restoration requiring OEM-level reliability.
✅ Key Features:
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Direct replacement for Bosch 0470506041
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Fits Cummins 5.9L ISB and QSB engines in commercial/industrial applications
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Fully remanufactured and calibrated to OEM Bosch specifications
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24-Volt electronic version – matches standard vehicle and equipment electrical systems
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Includes all latest Bosch factory upgrades
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Backed by a 1-year unlimited mileage warranty
1-Year Unlimited Mileage Warranty. Valley Fuel Injection & Turbo, Inc. warranties all parts and labor for a period not to exceed 1 (one) year from date of purchase or service. Electrical components warranted for 30 (thirty) days.
⚠️ Common VP44 Failure Codes This Pump Solves:
P0216 – Timing Failure (most common VP44 code)
P0251 to P0260 – Fuel metering and control errors
P1688 / P1689 / P0215 – Pump communication and performance issues
🔧 Installation Notes:
A healthy lift pump is critical to the life of your VP44. We strongly recommend installing a new lift pump when replacing your injection pump to protect your fuel system and maximize performance.
Replaces / Cross-References:
Why do I see VP44 pumps cheaper online?
Short answer: it is usually not the same part — the VP44 is the one people get burned on most. Read why ↓
Search any OE number and eBay, Amazon and a dozen storefronts will show it well under dealer cost, sold by outfits with no name, no address and no phone number. We lose business to those listings every week — and we see a lot of them come back through our shop. Here is what is actually different.
- The part number proves nothing on its own. Counterfeit injectors and pumps are stamped with the same OE numbers as the real thing, in housings cast to look identical. The number in the listing title tells you what the seller claims it is, not what came off an OE line.
- “Remanufactured” is not a regulated word. A genuine reman unit is stripped to bare components, has its wear parts replaced — nozzle, plunger and barrel, solenoid, seals — and is then run on a calibration bench until it meets the original flow and response spec. A cheap one is very often cleaned, resealed, painted and shipped. Both get called remanufactured.
- No full teardown, so no idea what is worn. A proper rebuild means the unit comes apart completely and every part gets inspected and measured against spec — not just the ones that are obviously bad. Skip the teardown and you are reusing worn internals inside a freshly painted housing. It will run on the truck. It will not last.
- No factory-spec bench load testing. A unit is not finished until it has been run under load on a test bench and made its numbers across the range, not just at one easy point. That bench time is most of what you are paying for. Sellers working on price cut it first, because nobody can see it in a photo.
- The warranty has to be honored by someone. Everything we remanufacture in house carries a one-year warranty, with 30 days on electrical components. Parts we supply as an authorized dealer carry the manufacturer’s own warranty. Either way you call us, a real shop in California, and we sort it out. A marketplace warranty usually means shipping the part overseas at your own cost and hoping for a reply.
- No core program. We credit your rebuildable core back in full. Discount sellers generally will not take one, so the gap narrows the moment you account for the core you are now stuck holding.
- The VP44 is the part people get burned on most. A real VP44 rebuild means the pump comes fully apart — head and rotor, timing piston, vane pump, seals — every part inspected and measured, worn components replaced, and the electronics evaluated rather than assumed good. Then it goes on the bench and is load tested to factory spec across the range. A cheap VP44 is very often a seal kit and a wash. It will start the truck. Then you get the dead-pedal, the no-start when hot, the stalling — and you are doing the job again, plus the tow.
We are an authorized dealer and a working fuel-injection shop — we have been rebuilding and testing this hardware in Woodland since 1993, and the people who answer the phone are the people who run the benches. Not sure this is the right part for your engine? Call us with your serial number before you order and we will confirm it. Send your rebuildable core back and the core charge is refunded. And if a price somewhere else looks too good, call 530-668-0818 and we will tell you straight whether it is a deal or a problem.



