Kayfun v4 Replacement Parts by EHPro
#1 510 Contact Screw
#2 510 Insulator
#3 UC Bottom Section with 510 Connector
#4 Seal Ring 17 x 1.5
#5 UC Middle Section
#6 O-Ring 17 x 1
#7 Seal Ring 13 x 1
#8 UC Upper Section
#9 UC Counter Screw
#10 Insulator
#11 UC Counter Nut
#12 Spring
#13 Air Regulation Screw
#14 Center Post Screw
#15 Center Post Insulator
#16 O-Ring 11 x 1.5
#17 Atomizer Deck
#18 O-Ring 10 x 1.5
#19 Atomizer Deck Insulator
#20 Positive Block
#21 - #24 Built (Post) Screws
#25 Congestion Ring
#26 Evaporation Chamber
#27 O-Ring 17 x 1
#28 Lower Tank Segment
#29 O-Ring 19 x 1.5
#30 Middle Tank Segment
#31 O-Ring 19 x 1.5
#32 Upper Tank Segment
#33 Counter Nut
#34 O-Ring 17 x 1
#35 Lower Part of the Top Cap
#36 O-Ring 5 x 1.5
#37 O-Ring 10 x 1
#38 Top Nut
#39 - #40 40 O-Ring 6 x 1.5
#41 Mouthpiece