CFS Fuel Oil Filter Cartridge for FULFLO FB4, Westwood F80, 4 Pack

• CATCHES SLUDGE BEFORE IT REACHES THE NOZZLE - Heating oil picks up sludge, rust and sediment in the tank and along the line, and an oil nozzle meters fuel through an opening measured in thousandths of an inch. The cartridge captures that debris upstream, where it is easy to deal with, rather than at the nozzle where it is not.
• FOUR CARTRIDGES PER PACK - At one change a year, four covers about four heating seasons. This is the lowest cost per cartridge on the page and suits a rental portfolio or a service van.
• FITS FULFLO FB4 AND F80 HOUSINGS - A direct replacement cartridge for the FULFLO FB4 and Westwood Sid Harvey F80 fuel oil filter housings. Check the cartridge you are pulling out against the one pictured before ordering, since several fuel oil elements share a similar body in different lengths.
• CHANGE IT WITH THE ANNUAL SERVICE - Once a year at the start of the heating season is the usual interval, and it is cheap insurance against a burner locking out on the first cold morning. Change it sooner if the tank has been run low, since that is when settled sludge gets stirred into the draw.
• COMPATIBLE REPLACEMENT, NOT AN ORIGINAL MANUFACTURER PART - CFS is an independent brand. Manufacturer names and part numbers are used for reference only, to show what this cartridge fits.

CFS replacement fuel oil filter cartridges for FULFLO FB4 and Westwood Sid Harvey F80 housings, four per pack. Heating oil is not clean fuel by the time it reaches the burner. It picks up sludge from the bottom of the tank, rust from the tank wall and the line, and fine sediment that settles out between deliveries, and an oil nozzle meters fuel through an opening measured in thousandths of an inch. The filter cartridge sits between the two and holds that debris where it can be dealt with in a two minute change, rather than at the nozzle where it means a service call. Change the cartridge once a year at the start of the heating season, so four covers about four heating seasons. Change it sooner if the tank has been run low, because that is when sludge that has been sitting undisturbed at the bottom gets drawn into the line. A burner that short cycles, loses flame, or locks out on a cold morning is often a partly blocked filter rather than anything more serious. Check the cartridge you are pulling out against the one pictured before ordering: several fuel oil elements share a similar body in different lengths, and the wrong length will not seat correctly in the bowl. CFS is an independent brand. This is a compatible replacement, not an original manufacturer part, and manufacturer names and part numbers are used for reference only.