Donaldson P618478 Air Filter | Freightliner Cascadia DD13, DD15 & DD16 PowerCore® Air Filter

Donaldson P618478 PowerCore® Air Filter for Freightliner Cascadia & Detroit Diesel Engines

The Donaldson P618478 Air Filter is a premium PowerCore® engine air filter designed to provide maximum airflow, superior contaminant protection, and extended service life for Freightliner Cascadia trucks equipped with Detroit DD13, DD15, and DD16 engines.

Featuring Donaldson's industry-leading PowerCore® filtration technology, the P618478 delivers exceptional dust-holding capacity while maintaining lower restriction than conventional air filters. Cleaner airflow helps support fuel economy, engine performance, turbocharger protection, and long-term engine reliability.

Trusted by fleets, owner-operators, and diesel repair facilities across North America, the Donaldson P618478 is one of the most widely used heavy-duty air filters for Freightliner applications. Donaldson's PowerCore® technology is engineered to provide greater filter capacity, lower restriction, and longer service intervals compared to traditional filter designs.

Key Features

• Genuine Donaldson PowerCore® filtration technology
• Designed for Freightliner Cascadia applications
• Lower initial restriction for improved airflow
• Extended service intervals
• Superior dirt-holding capacity
• Protects turbochargers and engine components
• Reliable RadialSeal™ sealing technology
• Helps maintain fuel economy
• OEM-quality fit and performance

Specifications

• Part Number: P618478
• Brand: Donaldson
• Filter Type: PowerCore® Engine Air Filter
• Style: Panel Filter
• Length: 26.18"
• Width: 9.28"
• Height: 5.23"
• Media Type: Cellulose
• Seal Type: RadialSeal™

FleetPride lists the P618478 as a PowerCore® panel-style air filter featuring RadialSeal™ technology and dimensions of 26.18" x 9.28" x 5.23".

Benefits of Replacing Your Air Filter

• Improves airflow to the engine
• Protects turbochargers from contaminants
• Helps maintain fuel economy
• Reduces engine wear
• Supports proper combustion
• Improves engine efficiency
• Helps reduce maintenance costs
• Extends engine life

Common Applications

• Freightliner Cascadia
• Freightliner Century Class
• Detroit DD13 Engines
• Detroit DD15 Engines
• Detroit DD16 Engines
• Regional Haul Trucks
• Long-Haul Owner Operators
• Fleet Maintenance Programs

FleetPride identifies the Donaldson P618478 as a common air filter for Freightliner Cascadia and Century Class truck applications. 

Major Cross Reference Numbers

• Baldwin CA5790
• Fleetguard AF27879
• Fleetguard AF56500
• Luber-Finer LAF6260
• Luber-Finer LAF6260A
• WIX 49478
• Donaldson P610260
• Donaldson P637497
• TruckPro DNP618478
• Freightliner 03-33648-001
• MH20016
• SF Filter S23672
• Forney 49478

Published interchange references for the P618478 include Baldwin CA5790, Fleetguard AF27879, Fleetguard AF56500, WIX 49478, Luber-Finer LAF6260, and Freightliner OEM 03-33648-001. 

Why Air Filtration Matters on DD15 Engines

A heavy-duty diesel engine consumes thousands of cubic feet of air every hour. Dirt, dust, and airborne contaminants that bypass the air filter can damage turbochargers, cylinder liners, piston rings, and emissions components.

Technicians frequently identify restricted or neglected air filters as contributing factors to reduced performance, excessive regeneration events, and lower fuel economy. Maintaining proper air filtration helps protect expensive engine components and maximize uptime.