HEAVY DUTY D/R TIMING CHAIN CONVERSION KIT FOR NISSAN NAVARA D22 D40 YD25DDT YD25DDTI 16V 2.5L I4Timing chains are known to stretch on the YD25 engine, even at a very low distance travelled. This kit has been developed to ensure the problem is solved once and for all and there is no need to worry about it ever again. About The Kit: Chains: We offer customers a choice between genuine Nissan and German Iwis chains. Iwis chains cannot be used with genuine or aftermarket sprockets (other than ours) due to differences in pitch and width. We supply