5510671 | Cummins® Outlet Catalyst Module 8.9L ISC/ISL Skip to content
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5510671 | Cummins® Outlet Catalyst Module 8.9L ISC/ISL

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  • Product SKU: 5510671
  • Availability: In Stock
Original price $4,279.00 - Original price $4,279.00
Original price
$4,279.00
$4,279.00 - $4,279.00
Current price $4,279.00
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Description: Outlet Catalyst Module 8.9L ISC/ISL
Condition: New
Brand: Cummins®
Part Number: 5510671

Vehicle Fitment 5510671:

 
  • Engine Series: Cummins ISC (8.9L) and ISL (8.9L / L9).
  • Common Applications:

1. Vocational Trucks: Garbage trucks, dump trucks, and mixers.

2. Emergency Vehicles: Fire trucks and ambulances.

3. Transportation: School buses and motor coaches (e.g., Tiffin, Newmar).

4. Freight: Medium-duty delivery trucks (Freightliner, Kenworth, Peterbilt).

  • Emission Standards: Typically found on engines manufactured between 2010 and 2026 (EPA10, EPA13, and GHG standards).

 

The Cummins Outlet Catalyst Module 5510671 is a critical component of the exhaust aftertreatment system found in 8.9L ISC and ISL engines.

How it Works:
  1. Chemical Reaction: As exhaust gases pass through the module, they react with a coating of precious metals (the catalyst).

  2. NOx Reduction: When used with Diesel Exhaust Fluid (DEF), the module helps convert Nitrogen Oxides (NOx) into harmless nitrogen gas and water vapor.

  3. Particulate Filtering: It often works in tandem with the Diesel Particulate Filter (DPF) to ensure the engine meets EPA emissions standards.


 Signs of Faulty 5510671:

  •  Active Derate / Limp Mode: The most obvious sign. To comply with emissions laws, the ECM will significantly reduce engine horsepower and torque if it detects the catalyst is no longer cleaning the exhaust properly.
  • High DEF Consumption: If the catalyst is inefficient (due to "poisoning" or thermal damage), the system may inject excessive amounts of Diesel Exhaust Fluid (DEF) to try and compensate, resulting in unusually high DEF usage.
  • Frequent Regeneration (DPF) Cycles: While the catalyst is separate from the DPF, a failing aftertreatment system can cause backpressure issues or sensor errors that trigger the engine to "regen" more often than normal.
  • Fault Codes (MIL/Check Engine Light):

1. NOx Conversion Efficiency Codes: (e.g., Code 3582 or 4364) - These indicate the outlet NOx levels are too high compared to the inlet.

2. NOx Sensor Codes: (e.g., 3216 or 3226) - Sometimes a faulty module mimics a bad sensor, or vice versa.

  • Visible Crystallization: White, chalky deposits (urea crystals) at the outlet of the module or around the gaskets, indicating a leak or a failure in the decomposition process.


Manufacturer information
Cummins® is a worldwide leader in the production of engines, agricultural components, and other power-generating devices for various industries, including medium and heavy duty trucks, light commercial vehicles, buses, agriculture, and construction. Founded in 1919, this company stays true to its mission of making people's lives better by continuously improving its product line-up and introducing new solutions for a more prosperous world. Its core values—integrity, diversity and inclusion, excellence, caring, and teamwork—are what make it a successful company today—a worldwide leader with a network of more than 600 company-owned and independent distributors and almost 6,000 dealers in approximately 190 countries.

Warranty
First Truck Parts offers a 365-days warranty for all types of parts and in any condition. The warranty applies only to buyers who have placed an order on our website. 


Customer Reviews

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C
Chris Hughes
Gear housing

Good product

N
Nathan Todorov
Would use again

Nice website and good customer service

J
Jasvir Singh

Good job

J
Jiovanni Marchese

Good price fast shipping

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Marlott couet
Adapter

Haven't received it yet