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Buy High-Performance Fuel Injector Pumps for Mack Engines
Mack engines are built to pull weight, move freight, and operate day and night. But when fuel delivery fails, everything stops. That's why we offer premium Bosch fuel injector pumps tailored for Mack diesel engines, including E7-400, EM7-300, EDC, and mechanical P7100 applications. Every new and rebuilt unit we carry is flow-inspected, pressure-calibrated, and ready to install.
Whether you're running a long-haul truck, a construction hauler, or an industrial Mack diesel, we have the injector pump that restores the power and performance your engine was built for.
Choose the Right Injector Pump by Engine and Application
Each Mack engine series has its injector pump spec. We've simplified the process by matching pump part numbers to their most common engine fitments.
0-986-445-004DR (313GC5227M ; 0-414-755-003) Rebuilt Bosch EUP Unit Pump fits Mack E7-350 Engine
On Sale
$450.00
Regular price
$500.00
0-986-445-008DR (313GC5230MX) Rebuilt Bosch EUP Unit Pump Fits Mack E-Tech 12.0L Diesel Engine
On Sale
$700.00
Regular price
$950.00
9-400-231-083 (9-400-231-083=313GC5121P2) Injection Pump fits Mack Engine
On Sale
$550.00
Regular price
$600.00
All units are rebuilt or new and calibrated to Bosch OE standards, ensuring you get consistent injection pressure and clean combustion.
Get Injector Pumps Built for the Demands of Heavy-Duty Applications
Mack engines operate in high-load environments—freight lanes, quarries, and off-road conditions. Our injector pumps are rebuilt or manufactured to resist:
- Extended RPM operation
- Thermal cycling under load
- Contaminated fuel exposure
- Wear caused by long engine hours
These pumps restore stable fuel delivery, reduce injector chatter, and bring back full combustion control.
Get Backed by Industry-Leading Bosch Fuel System Engineering
Mack chose Bosch for a reason. Bosch's injection technology has been trusted for many years in heavy-duty diesel applications. The P7100, EDC, and inline series offer:
- Precision fuel metering
- Strong pressure regulation
- Accurate timing for injection events
- High resistance to heat and vibration
Our rebuilt Bosch pumps are reconditioned with Bosch-calibrated tooling and replacement parts.
Match Your Pump by Part Number or Engine Platform
Are you unsure which pump fits your Mack engine? We can match using:
- Engine model (e.g., E7-400, EM7-300, DT466)
- OEM references (e.g., 313GC5185P6, RE42302, AR78282)
- Bosch pump numbers (e.g., 0-402-746-852DR)
- Application type (hauling, vocational, industrial)
From electronic governors to mechanical inline systems, we'll get the correct unit on your order.
Choose Rebuilt vs. New Pump Based on Engine Age and Budget
Choose rebuilt pumps if you want:
- Cost-effective performance
- OEM castings and housing
- Fully inspected spray pattern and flow output
Choose new pumps if you need:
- Factory-fresh performance
- Longest lifecycle for new truck builds
- Minimal installation prep and tuning
We inspect all rebuilt pumps under operating pressure, ensuring no leaks, stable idle control, and optimized injection timing.
Your Fleet Depends on Reliability—Don't Compromise
If you're noticing performance issues like:
- Hard cold starts
- Fuel knock or idle surge
- Black or white exhaust smoke
- Loss of boost or power under load
Then it's time to replace your injector pump. Ignoring symptoms can lead to injector damage, valve issues, or even full engine failure.
Our Pumps Are Perfect for Over-the-Road, Construction, and Municipal Fleets
Our injector pumps are used in:
- Class 8 Mack trucks
- E7 vocational dump trucks and day cabs
- Municipal emergency response and utility fleets
- Construction equipment powered by Mack or Navistar engines
Every pump is built to handle real-world field conditions, not just inspection bench parameters.
Get Your Pump Delivered Fast, Inspected, and Ready to Install
We ship every pump with:
- Fast shipping within the U.S.
- Secure packaging that prevents fluid leaks
- Fitment instructions or part-matching assistance
Whether you're installing it in a shop or roadside, you'll have the right part with no delay.
5 Frequently Asked Questions
1. Do your rebuilt Bosch pumps meet the original equipment manufacturer (OEM) specifications?
Yes. Each pump is rebuilt to meet or exceed Bosch OE standards for flow, pressure, and injector timing.
2. How do I identify my current pump?
Locate the Bosch part number stamped on the housing or provide your engine's serial and model—we'll match it accurately.
3. What is the difference between EDC and P7100 pumps?
EDC pumps are electronically controlled; P7100 is a mechanical inline unit used in high-torque E7 applications.
4. Are these pumps compatible with biodiesel?
Most are rated for low-biodiesel blends (B5–B20). Contact us to confirm compatibility by part number.
5. Can you support large fleet orders or service shops?
Yes. We provide volume discounts, priority shipping, and VIN-matching services for fleets and independent mechanics.
Restore the Power of Your Mack Engine Today
Your Mack engine isn't designed to run at half capacity. When the fuel injector pump fails, it affects every mile, every load, and every job. Our Bosch injection pumps are ready to restore that performance with clean, consistent combustion and precise fuel control.
Call us now or place your order online. We'll get the right injector pump to your door, inspected, and ready for action—because your Mack engine was built to move, not sit still.