This group of forty vans were the first bogie brake vans to dispense with the end platform apart from the AJ (later ZJ) class passenger vans. In effect these were a shorter version of the AJ but were never classed as coaching stock. Between the two world wars they were the second most numerous type of Z class van on the W.A.G.R. Apart from the fitting of electric light in the 1950's they were largely unaltered throughout their careers.

An outline of the history of the individual vans is given in the table below. Some other points worth noting are that Z9718 was re-bodied in June 1927 but it is not known whether this was any different from the standard. Z9725 was used for rabbit traffic in 1929. Z137 had an extra 2 tons of ballast added to the underframe in March 1969 and was marked "For use between Bunbury and Boyup Brook only". Z142 was written back in April 1944 but it is believed to have been fitted with a new type 15a body.

First number	Issued to traffic	New number	Date renumbered	Electric light fitted	Written off
Z9705	September 1915	Z114	March 1939	September 1948	July 1972
Z9706	October 1915	Z115	November 1938	December 1949	March 1984
Z9707	October 1915	Z116	March 1939	September 1954	April 1973
Z9708	November 1915	Z117	October 1940	November 1955	August 1974
Z9709	September 1915	Z118	December 1939	April 1951	July 1978
Z9710	September 1915	Z119	May 1939	September 1951	August 1963 to JETTY 203
Z9711	September 1915	Z120	September 1939	March 1947	June 1949
Z9712	September 1915	Z121	April 1939	June 1950	April 1974
Z9713	October 1915	Z122	December 1938	October 1949	January 1985
Z9714	September 1915	Z123	February 1939	August 1950	June 1967
Z9717	September 1915	Z124	June 1940	March 1950	June 1984
Z9718	October 1915	Z125	September 1942	April 1951	November 1977
Z9719	October 1915	Z126	March 1939	January 1956	November 1977
Z9720	September 1915	Z127	December 1939	October 1948	January 1985
Z9721	October 1915	Z128	April 1940	August 1950	December 1954
Z9722	November 1915	Z129	May 1940	April 1947	August 1985
Z9725	November 1915	Z130	June 1939	July 1950	April 1982
Z9726	September 1915	Z131	April 1939	December 1951	November 1977
Z9727	November 1915	Z132	June 1939	August 1945	November 1985
Z9728	September 1915	Z133	November 1939	July 1950	January 1985
Z10029	December 1913	Z134	March 1939	March 1947	March 1984
Z10030	December 1913	Z135	January 1941	November 1955	June 1979
Z10031	December 1913	Z136	February 1939	December 1955	March 1984
Z10032	December 1913	Z137	March 1939	October 1948	August 1979
Z10033	December 1913	Z138	April 1941	November 1950	January 1985
Z10034	April 1914	Z139	June 1941	December 1955	August 1974
Z10035	April 1914	Z140	July 1941	October 1950	November 1977
Z10036	April 1914	Z141	February 1940	September 1948	November 1977
Z10037	April 1914	Z142	March 1939	-	December 1942
Z10038	April 1914	Z143	May 1940	May 1951	November 1985
Z10039	June 1914	Z144	November 1938	April 1950	November 1977
Z10040	June 1914	Z145	October 1938	September 1948	January 1985
Z10041	June 1914	Z146	March 1939	May 1947	May 1975
Z10042	June 1914	Z147	September 1939	December 1950	January 1985
Z10043	June 1914	Z148	December 1938	February 1952	January 1985
Z10044	June 1914	Z149	November 1939	June 1949	January 1985
Z10045	June 1914	Z150	November 1938	December 1955	March 1984
Z10046	June 1914	Z151	May 1940	November 1955	August 1963 to JETTY 200
Z10047	June 1914	Z152	April 1937	August 1956	January 1985
Z10048	June 1914	Z153	August 1937	December 1949	June 1984

The WAGR outline diagram is shown below.