K&N Universal Performance Air Filters RU-3280 273-318 It is the most accurate

It is the most accurate way to determine the correct pre-load in the rod bolt

CO12-771-8

Automotive Fittings Part Number: ATI-205033K1

and the white (daytime) increments are easy to read

544-16-16BLK

K&N Universal Performance Air Filters RU-3280 273-318 It is the most accurateBrand: K&N Manufacturer's Part Number: RU 3280 Part Type: Air Filter Elements Product Line: K&N Universal Performance Air Filters Automotive Fittings Part Number: KNN RU 3280 UPC: 024844020444 Air Filter Type: Oiled Air Filter Style: Conical flanged Inlet Flange Inside Diameter (in.): 6. 00 Air Filter Length (in.): 10. 00 Air Filter Top Measurement: 5. 000 in. diameter Air Filter Bottom Measurement: 7. 500 in. diameter Filter Material: Cotton gauze