An original Magneti Marelli multilingual spark plug applications catalogue, published in November 1967 for distributors, dealerships and automotive workshops.

The booklet provides comprehensive application data for a broad range of European and international marques, listing the correct Magneti Marelli spark plug references for individual models together with guidance on plug condition, diagnosis and replacement. The Ferrari section includes recommendations for the 250 LM, 275 GTB/GTS, 330 GT, 330 GTC, and 500 Superfast, making the catalogue a valuable period reference for restorers and concours enthusiasts.

Rear cover has a water stain, some general signs of light use.

Measures 15 x 10 CM.