Caterpillar 3406 A,B,C

The Caterpillar 3406A/B/C engine family is a legendary 14.6L inline six-cylinder diesel platform recognized for its exceptional durability, high horsepower, and dependable performance. Available in A, B, and C models, the 3406 became one of Caterpillar's most successful heavy-duty engines, powering everything from long-haul trucks to heavy construction equipment. Known for its strong torque, rebuildability, and long service life, the 3406 remains a favorite among fleets, owner-operators, and equipment owners.

About This Caterpillar 3406 A,B,C

Common Equipment Powered by the Caterpillar 3406 A,B,C

The Caterpillar 3406 A,B,C is commonly found in Highway tractors, heavy-haul trucks, dump trucks, logging trucks

Key Details

Detected Custom Fields on This Product
No additional details available.
Metal engine cylinder head with multiple valve openings and bolt holes on a light background

Configurations

Detected Custom Fields on This Product
No additional details available.

Key Details

Detected Custom Fields on This Product
No additional details available.

Configurations

Detected Custom Fields on This Product
No additional details available.

why pilot engines

The Smart Choice for Engines

Black wrench icon on a white background

Built to Exact VIN/ESN

Every engine is remanufactured to your exact engine serial number — guaranteed fit, every time.

Black five-point star icon on a white background

Highly Rated

Trusted by fleet managers and owner-operators nationwide for quality and reliability.

Black delivery truck icon on a white background

Free Shipping

Ground LTL and UPS freight included within the continental US — both ways.

Black dollar sign symbol on a white background

Price Match Guarantee

We match like-for-like price quotes from competitors. Quality at the best price.

Black circled timer icon with the number 8 and arrows

8-Hour Installation

Exact serial number match means your engine drops in and installs in about 8 hours.

Three black gear icons on a white background

OEM-Quality Performance

Remanufactured engines deliver OEM performance at a fraction of new engine cost.

The Smart Way to Buy

From inquiry to installation — a straightforward process.


Tell Us Your Needs

Share your vehicle or
equipment details


We Match the Right Fit

Our experts match
the right engine to your specs


Competitive Quotes

Detailed,
competitive pricing


Fast Delivery & Support

Freight included,
shipped nationwide


Back on the Road

Quality
backed by warranty

Frequently asked questions

How long will this engine last?

With proper maintenance, remanufactured engines routinely exceed 300,000 to 500,000 miles

What are common failure points?

Like most diesel engines, EGR and emissions components, injectors and turbo systems over time.

Is this enough power for my application?

If you're not hauling extreme loads daily, the ISL provides the best balance you'll feel mile for mile.

New vs Reman — what should I choose?

Remanufactured offers OEM-level quality, tested performance and the best value versus buying new.

Ready to Power What's Next?

Get the performance, reliability, and value you expect.

Black stacked-layers icon on a white background

Price match guarantee

Highest quality at competitive prices

Simple black outline of a delivery truck icon on a white background

Free shipping

Ground LTL and UPS freight, continental U.S.

Black clock icon on a white background, showing about 9:00.

8-hour installation

Built for fast, clean drop-in install

Black check mark inside a circle icon on a white background

100% dyno-tested

Every engine verified to factory specs

Black lightning bolt icon on a white background

Built for the real world

Medium-duty and vocational applications