This Boundary MartenWear-treated billet oil pump gear is designated for 2001–2005 Mazda Miata BP I4 engines with VVT. The part is described as a billet gear with MartenWear treatment and is specified to fit the BP I4 VVT Miata applications listed, making it a direct replacement option for those model years and engine configurations per the source data.
Boundary 01-05 Mazda Miata BP I4 (VVT) MartenWear Treated Billet Oil Pump Gear