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 18-5361 Distributor Cap is interchangeable with the following: GLM 71420, Mallory 9-29424, Mercruiser 811635T3, 811635, 811635T, 802467, OMC 986643, 3854260, Volvo Penta 3854260. Each Sierra product meets or exceeds the original equipment part it replaces.