They make polyethylene plastic ones that are double-ended and come in 90 degree fittings sold at places like Lowe's or Home Depot for a couple bucks. Buy 2, one for the valve cover, one for the intake snorkel and a section of hose to fit between.

__________________
Current stable:
1995 E320 149K (Nancy)
1983 500SL 120K (SLoL)

Black Sheep:
1985 524TD 167K (TotalDumpster™)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)