Qlty: Composite material, fiber-steel-fiber+silicone bead Head Bolts not include; Head bolt replacement recommended. HBS Ref.:81050725 Established in 1972, AJUSA is a leading international manufacturer of gaskets, head bolt sets, lifters, and turbo components. Manufactured in Spain Established in 1972, AJUSA is a leading international manufacturer of gaskets, head bolt sets, lifters, and turbo components. Manufactured in Spain, AJUSA offers the world's largest range for European and Asian aps worldwide marketplace. Qlty:Composite material, fiber-steel-fiber+silicone bead Head Bolts not include; Head bolt replacement recommended. HBS Ref.: 81001000 KType_Nr:10699|11077|11078|11409|11843|13188|13557|13981|14464|14753|14769|14770|14930|15126|16115|20207|20255|20629|20632|20790|21412|21448|21483|2194|2195|2206|2207|2236|2258|2319|23219|2345|2346|2352|2353|2368|2369|2385|2386|2388|2417|24