7 Engines not for land vehicles; cylinder components, namely, cylinder heads, cylinder blocks, valves, guides, valve springs, valve seats, and cylinder liners for vehicles other than land vehicles; machine and engine parts for vehicles other than land vehicles, namely, fuel economizers for engines, crankshafts, pistons, piston rings, connecting rods,water pumps, lift pumps, fuel pumps, injectors, starters, dynamos, alternators, turbochargers, couplings, belts, bearings, and bushings; regulators being parts of machines; radiators for vehicles; oil, fuel, and air filters for motors and engines; generators for land vehicles; compressors for machines; air compressors; power transmissions for machines; parts and fittings for all the aforesaid goods