Know When Your Mack Diesel Nozzle Needs Replacing

A worn-out nozzle affects more than just combustion. It puts your entire engine at risk. Recognizing the early symptoms can help prevent major mechanical failures.

Notice these signs? It’s time to act:

• Loss of Torque and Load-Carrying Strength: Your Mack truck struggles when climbing hills or towing heavy equipment. Poor spray patterns reduce pressure in the combustion chamber.

• Excess Smoke on Startup or Acceleration: Visible exhaust is often the result of unburned fuel. A well-functioning nozzle delivers a fine mist that burns cleanly.

• Rough or Unstable Idle: The engine shakes or surges instead of idling smoothly. Inconsistent fuel flow may be disrupting engine timing.

• Decreased Fuel Efficiency: Your fuel budget spikes with no change in workload. That’s often the result of an inefficient spray or clogged tip.

• Persistent Fault Codes or Injector Errors: Recurring alerts on your diagnostic system may indicate nozzle wear or internal damage.

Browse our inventory by part number or contact us directly for assistance in matching symptoms to the correct part.

Diesel Nozzle Brands Compatible with Mack Engines

We carry trusted diesel nozzle brands that meet the specific demands of Mack engines in over-the-road trucks, industrial platforms, and vocational equipment. Each part is vetted for compatibility, quality, and performance.

Bosch Nozzles

Known for high-pressure durability and precision-engineered spray patterns. Bosch tips support both older Mack mechanical engines and modern common-rail configurations.

Mack-Specified (OEM) Nozzles

These nozzles are sourced to meet original Mack performance standards. Perfect for factory-correct rebuilds or maintaining legacy vehicles.

More Top Brands Available

Goldfarb’s broader inventory also includes Denso, Delphi, Zexel, and other respected diesel manufacturers. If your model calls for a unique or discontinued part, we can help you locate it.

Choose the Right Condition: New, Rebuilt, or Used

Goldfarb offers multiple purchase options to fit your repair timeline and budget. Every nozzle undergoes a rigorous inspection process to verify condition and integrity.

Brand-New Diesel Nozzles

These are untouched parts sourced from leading remanufacturers. You get optimal spray efficiency, full OEM specifications, and the longest service life available.

Professionally Rebuilt Nozzles

Our rebuilt nozzles are remanufactured by experienced partners, then physically inspected by our in-house team. Each one is reviewed for orifice quality, structural wear, and fitment accuracy.

Budget-Friendly Used Nozzles

Pre-owned nozzles are carefully examined for signs of damage, fatigue, or corrosion. These are great for short-term fixes or non-critical diesel projects where budget takes priority.

Mack Engines Our Diesel Nozzles Lineup Supports

Our nozzles cover a wide span of Mack diesel platforms, both current and retired. We maintain stock for engines used in long-haul trucking, heavy-duty vocational fleets, and industrial machinery.

Mack ENDT675

We stock nozzles that fit the 10.8L ENDT675 engine, offering reliable delivery and combustion performance.

Mack E7 Series

Find components designed for this popular platform used in dump trucks, mixers, and highway tractors.

Legacy Mechanical Systems

If you’re maintaining older Mack inline-six configurations, we offer compatible nozzle codes for direct-fit replacement.

Modern Common-Rail Systems

Some DSLA-type Bosch nozzles in our catalog are suited for newer electronic injection platforms used in vocational Mack vehicles.

If you're not sure about your engine fitment, contact our team, and we’ll help verify compatibility before you buy.

We Support Mack Equipment Across Various Industries

Mack engines are designed to handle demanding jobs across various sectors. Goldfarb’s diesel nozzles are selected to support that same performance, whatever your industry.

• Heavy-Duty Freight: Ensure consistent fuel atomization in your long-haul rigs for better fuel economy and power output.

• Construction and Earthmoving: Equip your wheel loaders, cranes, and concrete mixers with nozzles that withstand heavy daily loads.

• Waste Management and Vocational Trucks: Maintain uptime in refuse haulers, roll-offs, and utility service trucks with reliable spray delivery.

• Mining and Industrial Use: Support generators, compressors, and drilling equipment that rely on dependable Mack engines.

• Fleet Maintenance Shops: Streamline repairs and part matching with ready-to-install nozzle options for various Mack platforms.

Why Diesel Experts Choose Goldfarb for Mack Nozzles

When uptime matters, your supplier should deliver more than just parts. Goldfarb & Associates is recognised for its quality assurance, technical expertise, and prompt fulfillment.

Every Nozzle Is Inspected Before It Ships

Our checklist covers spray pattern ports, seating surfaces, and body condition to ensure the nozzle matches your expectations.

Over 20 Years of Diesel Part Expertise

We’ve helped fleets, mechanics, and engine builders locate hard-to-source parts for over two decades.

Same-Day Shipping on In-Stock Orders

Place your order before 3:30 PM EST, and we’ll ship it out from our Maryland warehouse that very day. No delays. No backorders.

Sourcing Power for Rare and Obsolete Parts

Goldfarb maintains a global network of suppliers, remanufacturing shops, and surplus dealers. Our reach allows us to locate discontinued or hard-to-find nozzle models for older Mack platforms.

Flexible Options for Budget-Conscious Repairs

From brand-new units to thoroughly inspected used nozzles, we offer solutions at every price point. Choose what fits your project without compromising on basic quality standards.

Frequently Asked Questions

How do I match a Bosch DLLA or DSLA nozzle to a specific Mack engine model?

Look for the OEM part number or cross-reference code stamped on the old nozzle or injector body. If unsure, our team can help match the correct nozzle based on your engine serial number or injector type.

What’s the most common cause of nozzle failure in Mack heavy-duty trucks?

Contaminated fuel and extended service intervals are leading causes. Fine debris can erode nozzle tips or clog spray holes, especially under high-load, high-pressure conditions typical in vocational Mack applications.

Can I reuse an old nozzle from another Mack engine if it looks undamaged?

Visual inspection alone isn't enough. Even if a nozzle appears intact, internal wear or microscopic erosion can impact spray pattern and engine performance. Always confirm part numbers and conditions before reuse.

Do older Mack engines use the same nozzles as newer common-rail models?

No. Mechanical injection systems in older Mack engines use entirely different nozzle designs than modern common-rail platforms. Always verify compatibility based on engine model and injector style.

How quickly can I get nozzles for a Mack ENDT675 or E7 engine?

Most in-stock nozzles ship the same day if the order is placed before 3:30 PM EST. These two engines are commonly supported in our warehouse, so turnaround is typically fast.

Can I return a nozzle if it turns out to be incompatible with my Mack engine?

Yes. As long as the part remains unused and in original condition, we can assist with a return or exchange. Our team also offers fitment support to help avoid a mismatch before you order.

Order Your Mack Diesel Nozzle Today from Goldfarb

Goldfarb & Associates offers one of the most complete selections of Mack-compatible diesel nozzles in the market. Every part is carefully inspected, affordably priced, and backed by over 20 years of diesel expertise.

Search by part number, browse our in-stock options, or call our team today. We're ready to help you restore your Mack engine’s performance quickly and reliably.