K&N Air Filter Part Number Alert!
Posted: Fri Jun 19, 2009 4:59 pm
The DelicaWiki lists the K&N 38-9207 as a fit for the 4D56T engine. In my Delica (1992 Exceed, 4D56T), this is DEFINITELY NOT THE CASE. If you are running a K&N 38-9207 in your turbocharged Delica, read this post and check your filter NOW.
The stock filter from my Delica measures exactly the same as the specs for the K&N E-4810. Sure, the 38-9207 will fit in the cannister, but it will not seal around the engine air outlet at the top, which will allow unfiltered air to pass directly in to the combustion chamber. The 38-9207 is also about 2cm larger in diameter, which restricts flow of intake air around the filter. Additionally, the stock filter is fitted with a louvered plastic collar, which should be fitted to any replacement filter. It centers the filter at the top of the cannister and also diffuses intake air around the entire filter. This part will not fit around the larger 38-9207 filter.
Unfortunately, for me, I had opened the factory sealed bag on my $130 special order filter before I realized that it does not fit even remotely properly. Thankfully, the guys at my local Lordco took the filter back and are exchanging it for an E-4810. I'm really surprised that they took it back.
I'm not sure how that part number ended up in the Wiki, but it was an expensive mistake for me. If other people are running this K&N filter in their Delicas, I would get them out ASAP as your engine is breathing completely unfiltered air all the time.
I do realize that it is possible that some 4D56T applications have a different cannister that fits the 38-9207. If that is the case, the details need to be figured out to avoid having other people make this mistake.
The stock filter from my Delica measures exactly the same as the specs for the K&N E-4810. Sure, the 38-9207 will fit in the cannister, but it will not seal around the engine air outlet at the top, which will allow unfiltered air to pass directly in to the combustion chamber. The 38-9207 is also about 2cm larger in diameter, which restricts flow of intake air around the filter. Additionally, the stock filter is fitted with a louvered plastic collar, which should be fitted to any replacement filter. It centers the filter at the top of the cannister and also diffuses intake air around the entire filter. This part will not fit around the larger 38-9207 filter.
Unfortunately, for me, I had opened the factory sealed bag on my $130 special order filter before I realized that it does not fit even remotely properly. Thankfully, the guys at my local Lordco took the filter back and are exchanging it for an E-4810. I'm really surprised that they took it back.
I'm not sure how that part number ended up in the Wiki, but it was an expensive mistake for me. If other people are running this K&N filter in their Delicas, I would get them out ASAP as your engine is breathing completely unfiltered air all the time.
I do realize that it is possible that some 4D56T applications have a different cannister that fits the 38-9207. If that is the case, the details need to be figured out to avoid having other people make this mistake.