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4PCS P621725 Turck Engine Air Filter for KENWORTH T680 and PETERBILT 567 579



P621725 Engine Air Filter (Blue)
1. Core Product Advantages
Super Filtration Effect
Effectively filters out particulate impurities (e.g., dust, dirt, debris) from the incoming air. As engines require a large volume of external air during operation, this air filter ensures only clean air enters the cylinder for mixing with fuel and combustion—preventing abrasive particles from damaging engine components (e.g., pistons, cylinders) and extending engine lifespan.
Easy to Install
Designed for hassle-free installation. Most users can complete the replacement independently without professional tools: simply locate the air filter housing (typically near the engine intake), open the clips/screws, remove the old filter, and insert the new P621725 filter. No complex modifications are needed.
Increased Engine Performance
Replacing a clogged or old air filter with this P621725 model enhances overall engine performance: it improves airflow to the combustion chamber, which in turn boosts horsepower output and sharpens acceleration response. A clean air filter also helps maintain optimal fuel efficiency by ensuring proper air-fuel mixing.
2. Vehicle & Engine Compatibility
Kenworth Series
  • Kenworth T680
Compatible Engines: PACCAR MX13, PACCAR MX11, CUMMINS X15
  • Kenworth T880
Compatible Engines: PACCAR MX13, CUMMINS ISX, CUMMINS X15, PACCAR MX11
Peterbilt Series
  • Peterbilt 567
Compatible Engines: PACCAR MX11, PACCAR MX13, CUMMINS ISX15
  • Peterbilt 579
Compatible Engines: PACCAR MX11, PACCAR MX13, CUMMINS ISX15
3. Replacement Part Numbers
This air filter is a direct replacement for the following part numbers:
  • PACCAR P621725
  • Luber-Finer LAF6725
  • Donaldson P637453
  • Baldwin PA32000
  • Wix WA11058
  • NAPA 501058
Note: All listed replacement parts match this P621725 air filter in terms of dimensions, filtration performance, and installation fit. They can be used interchangeably without compromising engine protection or airflow efficiency.
4.The package contains

4PCS air filter

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