Preline-Plus Pre-Filter + Provent Combo Kit $764.45 – $993.45 Inc. Gst The Direction-Plus™ PreLine-Plus Pre-Filter + ProVent Combo Kit is the ultimate defence against carbon build-up and water contamination with 100% efficiency and up to 98% oil separation efficiency with our ProVent kit.With this dual kit you can‘t go wrong! Protect your investment 24 hours a day, 365 days a year. PRELINE-PLUS PreLine-Plus pre-filter system is designed specifically to cope with extreme weather conditions and poor fuel quality ensuring a high degree of water separation and particle pre-separation. With a 100% water separation efficiency rating (based on 300um droplet size) and a long service life, meeting the specifications set by leading manufacturers of diesel fuel injection systems, this PreLine-Plus pre-filter kit will reliably protect your fuel system from corrosion, abrasion and the frequency of repairs reduced. PROVENT OIL SEPARATOR Direction Plus™ ProVent oil separator protects your diesel engine by reducing the amount of oil entering the engine from blow-by gas in the crankcase ventilation system. By not fitting a Direction Plus™ ProVent system, it is likely that your engine will experience a progressive reduction in performance. Direction Plus™ ProVent system is specifically designed to separate and redirect oil and air from blow-by gas produced from within the crankcase as it also provides the option of returning the oil back to the sump.