10/31 RING & PINION, HEWLAND MANUFACTURE $2,300.00 Direct. Hewland Interchange #HC8-221C. Hewland Manufacture. SKU INV-0407901 Price $2,300.00 Quantity Map Reference B12 SYE Catalog Formula Mazda Differential Section (Common with MK Series) MK Series & Webster Differential Section Formula Madza Transmission Parts MK Series Transmission Parts Ring and Pinions