LF3970 Lube Filter Oil Filter Fit for Cummins QSB 5.9L 6.7L, ISB Engine Ford Freightliner Kenworth Peterbilt, Replaces #3937736, 5404947, 14406393, Pack of 6 Item Description REPLACES PART NUMBER: LF3970, 3937736, 5404947, P550428, P551019, BT595, B7177, 14406393, 57182. Compatibility is just for reference, please confirm your OE number. FITMENT: Fits for Cummins QSB 5.9L 6.7L, ISB Engine Ford Freightliner Kenworth Peterbilt. For detailed applicable models. FUNCTION:The Fuel Filter Element effectively separates the oil and water, filters the residue in the automobile fuel, keep the fuel clean, ensuring that precision components of the fuel system are free from wear and other damage. MATERIAL:The fuel filter features anticaustic housing, multi-layer filter and superior sealing components, wear-resistant, and has a long service life, provide maximum filtration. NOTE: Please replace the filter regularly. Please recycle the used filter. Don't reuse. Not Included Installation Guide or Manual, Professional installation is recommended. ? See more product details Payment We accept payment only through PAYPAL Shipping We ship products worldwide through standard express courier service, it will reach within 7 to 10 days to abroad buyers, we ship the product after recieved clear payment and give full information about shipment to the buyer Return We accept product return 25 days from delivery date but product should be in original condition.