Boss Ngarcia, hindi kaya yung k&n part number is 33-2041-1? kasi walang lumalabas na 33-2041 lang, and yung 33-2041-1 di yata compatible sa avanza na vvti kasi yung dimension ng air filter natin is 9"x9"x1.25" (LxWxH) and dapat flat yung edging nya para makabit sa rubber seal yung filter element. the closest nakita ko na malapit sa dimension ng avanza air filter is 33-2076 pero mas malaki kunti and di flat yung edge, baka mahirap para sa rubber seal.
[SIZE=1]Product Number: 33-2076[/SIZE]
[SIZE=1]Product Style: Panel Air Filter k&n filters
Height: 1.25 in (32 mm)
Outside Length: 9.125 in (232 mm)
Outside Width: 9.188 in (233 mm)
Filter Re-Oiling Amount: 1.32 oz (39 ml)
Inner Wire: No
Top Style: Open
Weight: 1.1 lb (0.5 kg)
Product Box Length: 10.44 in (265 mm)
Product Box Width: 1.75 in (44 mm)
Product Box Height: 11.56 in (294 mm)[/SIZE]

[SIZE=1][/SIZE]
Meron akong nakita isang brand na parang K&N din and made in Indonesia and para talaga sa avanza 1.3 and 1.5 vvti pero sa Indonesia lang yata ito binebenta, baka pwede ito maging new line ni Boss Marfin yung brand is JFC Cotton Gauze Filter heto yung website http://www.jfcfilters.com/search1.php