Radiator Myvi

Aluminium-core radiator assembly for the D20N Myvi. One number covers the 1.3 and the 1.5: 16400-BZ760-001. The same assembly is listed for the Bezza 1.3 and the Toyota Calya and Agya, so it is stocked widely.

Reject heat at a standstill in tunnel traffic and it will be fine everywhere else, so clean the fins and check the fan operation before condemning the unit. Plastic end tank cracking and weep at the core-edge seam are the usual leak points after 8+ years.

Replace the coolant with Perodua long-life coolant after fitting, and do not mix coolant types. Budget RM220 to RM480 depending on genuine or aftermarket.

The earlier version of this page carried a descriptive house code and a guess about an earlier generation’s numbering. Both are gone; the number above is the one Malaysian parts sellers list for the D20N.

Verified against a Malaysian Daihatsu genuine-parts listing naming 16400-BZ760-001 for the Myvi D20N 1.3 and 1.5 (kwongwai.com.my), checked 2026-11-01.