No. 3-006 named Gaya is a 4-6-0 steam locomotive that was built for North Borneo Railway by the Hunslet Engine Company in 1913.
No. 3-006 was originally built as a 4-6-4 tank engine No. 13 but was rebuilt by Tanjong Aru in 1954 as No. 6, a 4-6-0 tender engine, it later got the number 3-006.
Today the engine is at the Sabah Museum in Kota Kinabalu.