The organ was installed here second hand. It was originally built in the 1960s  and is the 363 model.  At Zion, the organ is located at the front of the church on the left with the patent 'rotofon' speaker on the gallery at the rear.

The specification reads:

PEDAL
Contra Bourdon 32'
Open Diapason 16'
Bourdon 16'
Echo Bass 16'
Octave 8'
Bass Flute 8'
Violoncello 8'
Flute 4'
Contra Bombarde 32'
Ophicleide 16'
Great to Pedal
Swell to Pedal

GREAT
Double Diapason 16'
Open Diapason 1 8'
Open Diapason 2 8'
Hohl Flute 8'
Gemshorn 8'
Dulciana 8'
Octave 4'
Suabe Flute 4'
Dulcet 4'
Twelfth 2.2/3'
Fifteenth 2'
Mixture III
Sesquiltera II
Tuba 8'
Swell to Great

SWELL
Bourdon 16'
Geigen Diapason 8'
Lieblich Gedact 8'
Salicional 8'
Quintadena 8'
Harmonic Flute 8'
Principal 4'
Lieblich Flute 4'
Salicet 4'
Nazard 2.2/3'
Piccolo 2'
Cymbale III
Acuta II
Contra Fagotto 16'
Trumpet 8'
Clarinet 8'
Clarion 4'

GENERAL
Slow vibrato
Fast vibrato
Reverb

MISCELLANEOUS
4 double touch thumb pistons to Great and Pedal
4 thumb pistons to Swell
1 balanced expression pedal - Great and Pedal
1 balanced expression pedal - Swell
Double touch canceller to each department