Bosch P7100 Inline Injection Pump Rebuild Service
The Bosch P7100, known to every 12-valve owner simply as the P-pump, is the cam-driven inline plunger-and-barrel injection pump that made the 1994-1998 12-valve Cummins legendary, and Valley Fuel Injection has been doing the P7100 injection pump rebuild the right way for decades. The same P-type inline design also powers the P3000 and other pumps on Cummins 4BT and 6BT industrial, agricultural, and genset engines. When a P-pump wears out, a proper rebuild on your own core is almost always the better move: we rebuild your pump and calibrate it to factory specification, so you get a pump matched to your engine instead of a mystery exchange unit or an imported knockoff.
The Valley Fuel Injection Difference
We are a rare breed. There are not many shops left in the country with the training, the certification, and the test equipment to rebuild a diesel injection pump to factory standard, and fewer still that do it at our level. This is not a cheap imported knockoff and it is not a throw-together seal-kit job. It is a genuine, certified, factory-spec rebuild, done by hand and proven on the bench before it ever leaves the building.
When you send a P7100 to Valley Fuel Injection, it is rebuilt by licensed, factory-certified diesel technicians, to the same standard the pump held the day it left the factory, and it is backed by a real warranty. That is the whole point of what we do.
Applications We Rebuild
The P7100 and its P-type siblings turn up on far more than pickup trucks. The most common applications we see:
| Engine / Equipment | Typical Applications |
|---|---|
| Dodge Ram 5.9L 12-valve | 1994-1998 Ram 2500/3500 with the 6BT Cummins, the classic P-pump application |
| Cummins 4BT & 6BT industrial | P3000 and P7100-type pumps on repower, ag, and construction engines |
| Gensets & irrigation | P-type inline pumps on stationary Cummins power units |
| Performance builds | Stock rebuilds and mild upgrades; we rebuild what your build needs |
Common Models We Rebuild
These are the P-type inline pumps that regularly come across our bench:
P7100: 1994-1998 Dodge Ram 5.9L 12-valve Cummins (6BT)
P3000: Cummins 4BT / 6BT industrial and ag
P-type inline (various): Industrial, genset, and irrigation diesels
Not sure which pump you have? It does not matter. Read the tag on your pump, call 530-668-0818, and we will confirm the model and quote your rebuild.
Signs Your P7100 Needs a Rebuild
- Hard starting or long cranking, hot or cold
- Low power, or a truck that will not pull the way it used to
- Blue or white smoke at idle, or a rough idle that never settles down
- Engine oil level rising or oil that smells of diesel, the classic sign of fuel dilution from a worn pump
- External fuel leaks at the delivery valves or the side cover
- An erratic or surging governor that hunts at idle or under steady throttle
- Worn plungers showing up as low rack travel and weak fuel delivery
How We Rebuild Your P7100
A Valley Fuel Injection rebuild is not a seal kit and a coat of paint. Every pump is torn completely down and built back to factory standard, one measured part at a time:
- Complete teardown and inspection. We disassemble the entire pump and inspect every single component against Bosch factory wear limits, including the camshaft and its tapered-roller bearings. Nothing is reused on assumption.
- Deep cleaning. Every part is ultrasonically and thoroughly cleaned so we are building on bare, spotless metal, not old varnish and debris.
- Genuine Bosch parts. Plunger-and-barrel assemblies, delivery-valve assemblies, the front seal, and the hand primer are replaced as needed with genuine Bosch parts sets, never cheap generic substitutes. We stock the Bosch F00E200132 and F00E200058 finishing kits, so your rebuild is not sitting on a shelf waiting for parts.
- Governor rebuild. The mechanical governor is fully rebuilt with genuine Bosch parts so the pump holds idle and responds the way it did from the factory.
- Calibration and testing on real machines. The finished pump is mounted on a professional test bench where we set per-cylinder fuel delivery balance, rack travel, and governor cut-in to Bosch specification, then verify timing before it ships.
That final step is what separates a real rebuild from a parts swap. Anyone can bolt in a seal kit. Very few shops can put your P-pump on a bench, balance fuel delivery across all six cylinders, and stand behind the result.
One more thing for 1994-1998 truck owners: while you are thinking about the front of your engine, read our Killer Dowel Pin guide for 12-valve Cummins. It covers the other job every 12-valve owner should know about.
Our Warranty
We control every step of the rebuild, so we stand behind it. Every P7100 we rebuild carries a 1-year warranty on the pump rebuild. Electrical and electronic components are warrantied for 30 days. Clean, water-free fuel and a healthy fuel supply are essential to pump life, so we recommend fresh fuel filters at installation to protect your rebuild.
What a P7100 Rebuild Costs
Typical Rebuild Cost
$2,200 to $3,600 typical range
Most Bosch P7100 rebuilds land between $2,200 and $3,600, with a typical rebuild around $2,900. Those are our real shop numbers for a P7100 rebuild, not markup guesses. Pumps with heavier wear, worn plunger-and-barrel assemblies, or camshaft and bearing damage run toward the top of the range. Because every rebuild is priced on your pump’s actual condition, we give you a firm quote after inspection, before any work begins.
Prices above cover the service and parts. Any applicable sales tax, plus shipping and small shop fees (such as a hazardous-waste disposal fee), are added at invoicing, so your quote reflects the full out-the-door number before any work begins. Buying tax-exempt? Qualifying diesel repair shops, fleets, farms, and agricultural operations can purchase tax-free. Set up tax-exempt purchasing by submitting your resale or exemption certificate once, and every qualifying order is tax-free going forward.
How It Works · Call for Pricing and Availability
Because every P7100 rebuild is done on your own core, pricing depends on the pump’s condition and the parts it needs, so we quote each job individually. Here is the process:
- Call us with the number on your pump so we can confirm it is a P7100, P3000, or other P-type pump and talk through your symptoms.
- Ship the pump to us or drop it off. We tear it down, inspect it, and give you a firm quote before any work begins.
- We rebuild and bench-calibrate the pump, then return it ready to install, backed by our warranty.
Call 530-668-0818 for pricing and turnaround, or start your rebuild online → and we will walk you through shipping it in.
Why Valley Fuel Injection
Valley Fuel Injection & Turbo is a full-service, factory-certified diesel fuel injection shop in Woodland, California, serving truck owners, farmers, fleets, and other repair shops across the country. We are a Bosch-authorized service center with the tooling, the test equipment, and the certification to rebuild inline pumps correctly, and we have been doing it long enough to have seen just about every P7100 failure there is. When a shop cannot fix it, they send it to us. Ship your pump from anywhere or visit us at our Woodland shop.
Wondering how the P-pump stacks up against the electronic pump that replaced it? Read our P7100 vs VP44 reliability comparison before you decide what to do with your truck.
Frequently Asked Questions
How much does a P7100 rebuild cost?
Most Bosch P7100 rebuilds run between $2,200 and $3,600, with a typical rebuild around $2,900. Those are our real shop numbers for a P7100 rebuild, not guesses. Pumps with heavier wear, worn plunger-and-barrel assemblies, or camshaft and bearing damage run toward the top of the range. We give you a firm quote after teardown and inspection, before any work begins. Call 530-668-0818 for current pricing.
Can I ship my P7100 to you from out of state?
Yes. We rebuild P-pumps for customers nationwide. Remove the pump, drain it, pack it securely in a sturdy box with plenty of padding, and ship it to our Woodland, California shop. We tear it down, inspect it, and quote the rebuild before any work begins, then return it bench-calibrated and ready to install, backed by our warranty.
What warranty comes with the rebuild?
Every pump we rebuild carries a 1-year warranty on the pump rebuild. Electrical and electronic components are warrantied for 30 days. We control every step of the rebuild in-house, from teardown to final bench calibration, which is why we can stand behind the work. Clean, water-free fuel is essential to pump longevity, so we recommend fresh fuel filters at installation to protect your rebuild.
What makes a Valley Fuel Injection rebuild different from a cheap exchange pump?
Most shops swap parts and hope. We are one of the few certified shops left that rebuilds the P7100 to true factory standard. Every component is inspected against Bosch wear limits, worn parts are replaced with genuine Bosch parts sets, and the finished pump goes on a test bench where per-cylinder fuel delivery, rack travel, and governor cut-in are set to Bosch specification and timing is verified before it ships. A cheap exchange pump gets none of that.
Do you rebuild the P3000 and other P-type inline pumps?
Yes. Besides the P7100 on the 1994-1998 Dodge Ram 12-valve, we rebuild the P3000 and other P-type inline pumps used on Cummins 4BT and 6BT industrial, agricultural, genset, and irrigation engines. Read the tag on your pump and call 530-668-0818, and we will confirm the model and quote your rebuild.
How long does a rebuild take?
Turnaround depends on our current shop schedule and parts availability for your specific pump. We stock genuine Bosch finishing kits for the P7100, which keeps most jobs moving. We give you an honest timeline when we quote the job. If your truck or equipment is down and you need it back fast, tell us when you call and we will do our best to prioritize it.
Can you rebuild a P7100 for a performance build?
Yes. We handle stock rebuilds and mild upgrades, and we rebuild what your build needs. If you are planning more fuel, tell us what the engine is doing now and where you want it to go, and we will talk through what makes sense. Every pump still leaves here bench-calibrated with per-cylinder delivery balanced and proven, whatever the target.
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