K&N parts matching Purolator A40004 air filter

The Purolator A40004 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Purolator air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Darrell Purvis, Brookville, Ohio
GOOD FIT, I USE K&N PRODUCTS FOR THEIR DURABILITY, STRAIGHT UP.
Millard, Bend, Oregon
This air filter allows my 3.9 V-6 to breathe. I now enjoy the original torque this engine once had, plus the take off is pretty sweet. It hasn't done what I would have liked...increase gas mileage, but it runs smoother and sweeter.
Burke Schmidt, Salem, Oregon
I purchased this filter as it is designed to breath easier, be cleaned and last for many more miles than I'll drive. The reputation of the company is good and that made the choice easy. I have a class B motorhome which uses a gasoline V8 engine, and any modification like this can help make it more even a slight bit more efficient. It installs easily, once you get to the engine.
E-1100 K&N E-1100 Replacement Air Filter
List Price: $88.19
Your Price: $56.99