560SEL (126.039) V8-5.6L (117.968) (1986)
25 Mount heater unit on transmission tunnel from front passenger side.
26 Push heater unit against firewall, inserting heating pipes through firewall.
27 Secure heater unit to firewall with upper left angle bracket and bolt (44).
28
Screw heater unit onto firewall with upper right angle bracket and nuts (42 and 43).