K&N Engine Air Filter: High Performance, Washable, Replacement Filter: Compatible 1971-1992 BMW (M3, 635CSi, 316i, 535iS, 318i, 518i, 525i, 528i, 535i, 628CSi, 735i, M535i, 323i, 728i, 732i),
| Fit Type | Vehicle Specific Fit |
| Product Grade | Replacement Part |
| Shape | Rectangular |
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