The Caterpillar C13 ACERT Engine is a robust 13.0L inline 6-cylinder engine, renowned for its power and torque, suitable for heavy-duty on-highway trucks, construction equipment, and industrial machinery. It offers 335 to 525 horsepower and 1,350 to 1,850 lb-ft of torque. Equipped with a liquid-cooled system and high-pressure common rail (HPCR) fuel system, it ensures optimal operating temperatures, enhanced fuel efficiency, and reduced emissions. Complying with Tier 4 Final / Stage V emissions standards, the engine incorporates ACERT technology and a high-pressure common rail fuel system, optimizing fuel efficiency and performance. Known for reliability and durability, the C13 ACERT is built with high-quality materials and undergoes rigorous Caterpillar testing. It features advanced electronic controls for smooth operation under various conditions. Maintenance is facilitated by Caterpillar's extensive support network, authorized service centers, and readily available spare parts. Advanced diagnostics and sensors help monitor performance and identify issues, ensuring timely maintenance and minimal downtime.
Key Features of the Caterpillar C13 ACERT Engine
Renowned for robust performance and advanced ACERT emissions technology
Turbocharged with aftercooler system for enhanced performance and efficiency
Electronic Control Module (ECM) for optimized engine management with CAT proprietary diagnostics
High-Pressure Common Rail (HPCR) fuel injection technology for fuel efficiency and emissions control
Proven reliability and durability across on-highway and off-highway applications
High torque output for superior hauling capability up to 1,850 lb-ft
Meets stringent Tier 4 Final and Stage V environmental standards with ACERT
Easy maintenance with accessible engine components and CAT dealer network support
Extensive parts availability simplifies repairs and upgrades
Reprogrammable vehicle operating parameters through CAT ET diagnostics
ACERT Technology Explained
ACERT stands for Advanced Combustion Emission Reduction Technology. It's Caterpillar's proprietary multi-system emissions approach that combines high-pressure common rail fuel injection, advanced air management (twin turbochargers in some variants), aftertreatment systems including DPF and SCR (where applicable), and CAT ECM controls. ACERT was Caterpillar's path to meeting EPA Tier 4 emissions without re-architecting the base engine, which is why the C13 ACERT retains the proven C13 architecture while adding modern emissions compliance.
Signs You Need a Replacement C13 ACERT
Loss of compression on one or more cylinders during dyno or in-frame test
Cylinder head crack symptoms (coolant loss, white smoke, hard start)
Excessive blowby past piston rings (sign of bore wear or ring failure)
Connecting rod or main bearing knock under load
Oil consumption above factory spec for the engine's age
ECM diagnostic codes pointing to internal mechanical issues
Aftertreatment failure that has damaged the engine (DPF clog with backpressure damage, etc.)
Donor truck or equipment has been totaled or sold for parts and the engine is being moved to a new chassis
Repower of a Class 8 truck, construction excavator, generator, or marine vessel that originally received its C13 ACERT from new
Known Cat C13 ACERT Issues We Inspect Before Shipping
Cylinder head cracks: A documented C-series weakness similar to the older 3406 family. We pressure test or visually inspect heads before shipping.
HPCR injector wear: Common rail injectors have a service-replace nature. We note injector functionality where inspectable.
Aftertreatment system condition: DPF, DOC, and SCR (where applicable) condition documented on every unit.
EGR cooler integrity: Inspected for cracks and coolant ingress to combustion chamber.
Liner and piston inspection through bore where accessible.
CAT ECM functionality verified before shipping.
What Is Included, What Is Not Included
Item
Details
INCLUDED
Long block: block, crankshaft, pistons, connecting rods, camshaft, cylinder head, valve train, oil pan, front timing cover, gear train, HPCR fuel pump and injectors (typical), valve covers.
NOT INCLUDED
Turbocharger (sold separately when condition warrants), CAT ECM (sold separately, application-matched), wiring harness, charge air cooler, exhaust manifold and complete aftertreatment (DPF, DOC, SCR), starter, alternator, A/C compressor, water pump (typical), accessory drive bracketry, intake manifold (varies).
Fluids
Drained before shipping. Refill with 15W-40 CK-4 spec heavy-duty diesel motor oil.
Core Note
No core charge. You are not required to return your old engine.
Vehicle Compatibility
The Caterpillar C13 ACERT is used in:
Vehicle
Compatibility
Heavy-duty Class 8 On-Highway Trucks
Kenworth W900, T800, T660, T680 with CAT option, Peterbilt 379, 389, 386, 387 with CAT option, Freightliner Classic and Coronado with CAT option, International with CAT option, Western Star with CAT option
Construction Equipment
Caterpillar excavators, loaders, dump trucks, motor graders (varies by model and year)
Industrial Generators
CAT XQ and XQP generator sets, standby and prime power units
Marine Vessels
Boats, ferries, small ships, propulsion and auxiliary power
Agricultural Equipment
Large tractors, harvesters (CAT and OEM applications)
Mining Equipment
Haul trucks, drilling rigs, crushers (varies)
Condition and Inspection
Every used Cat C13 ACERT we ship goes through this process:
Compression test across all 6 cylinders, pressure per cylinder recorded
Cylinder head inspected for cracks (the most common C-series failure mode)
HPCR fuel system function verified
Aftertreatment condition documented (DPF, DOC, SCR where applicable)
Approximate hours / mileage documented when verifiable
Where donor mileage or hours are verified, they are shared. Where not confirmable, we disclose openly before payment.
Why Buy From Vaz Auto Solutions
All 6 cylinders compression tested, results before you pay
Cylinder head crack inspection (the leading C-series failure point)
HPCR fuel system function documented
ACERT tier configuration documented for ECM matching
Aftertreatment condition documented
Donor application documented
Free crated freight to all 50 states, no hidden fees
No core charge, keep your old engine
15 day replacement warranty on internal defects
Class 8 diesel and CAT-experienced support team on the phone
Engine Family
Caterpillar C-Series, ACERT
Type
Diesel Engine, Heavy-Duty
Displacement
13.0 liters
Configuration
Inline 6-cylinder
Aspiration
Turbocharged with aftercooler
Cooling System
Water-cooled
Fuel System
High-Pressure Common Rail (HPCR)
Horsepower
Up to 520 hp (335 to 525 hp range)
Torque
Up to 1,750 lb-ft (1,350 to 1,850 lb-ft range)
Emissions
EPA compliant (varies by model year, Tier 4 Final / Stage V)
Combustion Technology
ACERT
Manufacturer
Caterpillar Inc.
Applications
Heavy-duty trucks, construction equipment, industrial applications
Compatibility
2000 Caterpillar C13 ACERT Engine and cross-fit applications
Price
$12,000.00
Ackermann
I recently purchased a Caterpillar C13 Acert Engine from Vaz Auto Solutions, and I couldn't be happier with my purchase. The engine performs flawlessly, providing the power and reliability I need for my heavy-duty truck. The customer service from Vaz Auto Solutions was exceptional, making the buying process smooth and hassle-free. Highly recommend!
Klaassen
Finding the right engine for my truck was crucial, and I'm grateful I came across Vaz Auto Solutions. The Caterpillar C13 Acert Engine I purchased has been a game-changer for my business. It delivers the power and performance I need to tackle tough jobs with ease. Plus, the team at Vaz Auto Solutions was helpful and knowledgeable, guiding me through the selection process.
What applications is the C13 ACERT Engine suitable for?
It is commonly used in heavy-duty Class 8 on-highway trucks (Kenworth, Peterbilt, Freightliner with CAT option), construction equipment, industrial generators, marine vessels, and agricultural machinery. The ACERT variant specifically meets Tier 4 Final / Stage V emissions standards.
How does the C13 ACERT Engine manage emissions?
The engine meets stringent EPA Tier 4 Final and EU Stage V environmental standards through Caterpillar's Advanced Combustion Emission Reduction Technology (ACERT). ACERT integrates HPCR fuel injection, advanced air management, EGR, and aftertreatment systems (DPF, DOC, and SCR where applicable) to reduce emissions while maintaining power.
Is the C13 ACERT Engine easy to maintain?
Yes. The engine is designed for accessibility with major service points (oil filter, fuel filter, air filter, water filter) easily reachable. Caterpillar's extensive global dealer network ensures parts availability and CAT-trained service technicians anywhere in North America.
What type of fuel system does the C13 ACERT Engine use?
The C13 ACERT uses an advanced high-pressure common rail (HPCR) fuel system with electronically controlled injectors. This is a step up from older mechanical pump-and-line systems and the EUI system used on earlier C-series engines. HPCR enables higher injection pressures, multiple injection events per cycle, and finer emissions control.
How reliable is the C13 ACERT Engine?
The engine is well-regarded for reliability and durability in demanding applications when properly maintained. Common service intervals include oil changes every 25,000 to 35,000 miles for fleet service, fuel filter every 30,000 miles, aftertreatment regeneration as automated by ECM. Many fleet C13 ACERT engines log 800,000+ miles between major rebuilds.
What kind of power output can be expected from the C13 ACERT Engine?
The C13 ACERT is rated 335 to 525 hp depending on tune and application, with peak torque of 1,350 to 1,850 lb-ft. On-highway truck variants are typically tuned 410 to 525 hp. Industrial and generator applications are tuned to specific RPM and load profiles.
What's the difference between the C13 and the C13 ACERT?
The base C13 was the original platform (2003+). The C13 ACERT specifically refers to the post-2007 variant equipped with ACERT emissions technology to meet EPA 2007 and later Tier 4 emissions standards. The ACERT variant adds aftertreatment, HPCR fuel system upgrades, and revised ECM tuning. Both share the same base block architecture.
Is there a core charge?
No. You keep your old engine, no return required.
15 Day Replacement Warranty
Every used Caterpillar C13 ACERT Engine sold by Vaz Auto Solutions is covered by a 15 day replacement warranty from the date of delivery.
Covered:
Internal defects present at the time of delivery
Part does not perform as described
Wrong part shipped due to our fulfillment error
Not covered:
Damage from improper installation
Damage from running on contaminated or off-spec diesel fuel
Damage from operating outside CAT ECM parameters or with deleted emissions equipment
Damage from incompatible turbocharger, intake, or exhaust components
External components unless specifically listed (turbo, ECM, aftertreatment sold separately)
Labor costs of any kind
To file a claim, contact us within 15 days of delivery at (240) 301-0095 or support@vazautosolutions.com.
Compression Tested: All 6 cylinders pressure-checked, results before you pay
Cylinder Head Inspected: Leading C-series failure point checked
HPCR System Verified: Fuel injection function documented
