The Sierra 18-5280 Tune Up Kit is interchangeable with the following: GLM 71830, Mallory 9-29320, Mercruiser 811635Q2, 811635Q1, 811635T2. Contains: 18-5361 Distributor Cap, 18-5406 Rotor. Each Sierra product meets or exceeds the original equipment part it replaces.

The Sierra 18-5406 Rotor is interchangeable with the following: GLM 71120, Mallory 9-29220, Mercruiser 811636, 898253011, 811636-1, 8M001254, 802468, OMC 986651, Volvo Penta 3854261. Each Sierra product meets or exceeds the original equipment part it replaces.