Introduced as bi-weekly 131/2 JJ Exp (MAQ-NZM & connects Cochin by 49/50 SRR-Cochin Link). In 1977, 131/2 run 5 Days & remaining 2 days K.K. introduced with link to SBC (185/6) & TVC (125/6). On non JJ days, K.K. Connects SRR-MAQ by 83/84 SRR-MAQ Link Exp (restored in 1977, earlier MAQ-TPJ Link). Together they termed as 125/6 Kerala Mangala Exp.
1987 TT shows 131/2 JJ as Mangala Exp which become 2625A Mangala (2625 Mangala Kerala Exp) in 1990 TT (Mangala & Kerala merged to become daily service) which in 1995 become independent service before diversion & extension to ERS via KR in 1998!!