WAGR Ab class (diesel)

The WAGR Ab class were a total of 6 diesel-electric locomotives operated by the Western Australian Government Railways (WAGR) from 1969 to 2000.

Ab class No. 1535 on display at Wheatbelt Heritage Rail, Minnivale in 2017.

The Ab class were built by Clyde Engineering of Granville, Sydney, NSW as an improved version of the Aa class built in 1967 with larger fuel capacity. The Ab class continued in service until 2000 when the last was included in the sale of Westrail to the Australian Railroad Group (ARG)

Several had been withdrawn before this. Two of the Ab class are in South Africa, one in Chile, one has been scrapped, and one is stored at Forrestfield by Aurizon. No. 1535 is preserved by Rail Heritage W.A.