CODE MKL OR MKV. code MKV. A combination of parts used to seal the Differential Drive Pinion End Yoke. A component which prevents a leak at the Differential Drive Pinion End Yoke. Active Differential. Differential Code HAG. Differential Pinion Seal. From 05/30/2022. To 05/30/2022. Couple AND AMPLIFIER; flange seal kit. Couple AND flange repair kit. Couple AND flange seal kit. Differential Pinion Seal. Differential Seal. Drive Shaft Pinion Yoke Seal Kit. Flange inner seal. Front seal. Rear seal. Included with: Couple and flange, Differential assembly, Differential assembly Order by code, Differential assembly Part cannot be reused/reinstalled, Differntial assembly, Flange.