TRANSPEED 6PCS Set DPO AL4 Transmission Kit Oil Sealing Rings Kits For 307 206 207 306 406 This oil ring set is designed for automatic transmission systems and is compatible with various vehicle models including 307, 206, 207, 306, 406, and 408.The kit contains 6 pieces per set and fits AL4 DPO transmission types.It is constructed from aluminum material, providing under and low temperature conditions.The design resists rust and corrosion, supporting long-term.Each oil ring undergoes disassembly, cleaning, inspection, calibration, and testing to proper shape, fit, and function.The product features an improved design with enhanced finish for reduced friction and increased resistance to wear, contributing to extended service life.Craftsmanship ensures functional consistency with specifications. This replacement part is manufactured independently.All brand references are used solely to denote compatibility with listed models.