EMP 300-03085 MerCruiser Tune Up Kit with CapThis tune up kit comes with a cap and is intended for use with MerCruiser engines. This tune up kit meets all OEM requirements.Tune Up Kit Application:For 1981-2001 V8 180-800HP GM & MIE engines with Thunderbolt HEI ignitionReplaces: Mercury; 805759Q3; 805759T6; 805759T4; Interchangeable: Sierra; 18-5273; CDI; E66-0012; GLM; 71780; Mallory; 9-29350;