NIS. 98-02 SKYLINE GT-R/GT-S R34 Chassis TurboKoyo Radiator - HH Series: Koyorad's new 48mm 'HH' Series radiator core features an ultra high fin density to maximize heat transfer. Koyo designs and manufactures each radiator with precision; therefore each one is a direct-fit performance replacement for the stock OE plastic/aluminum radiator for a quick and simple installation with no modifications. Koyo has also integrated a 1/8 Inch NPT female accessory fitting (supplied with a threaded plug) to accept temperature sensors typically included with aftermarket temperature gauges.Koyorad quality is a direct result of their privately owned factories which allow Koyorad Japan to oversee each stage of radiator production. This ensures that quality is never sacrificed for quantity. Each Koyo all aluminum radiator core is hand assembledNocolok brazedthen TIG welded by hand with the finest aluminum available. These are just a few characteristics that have earned Koyorad Radiators their excellent reputation in performance radiators worldwide.-Features-- Koyorad 'HH' Series 48mm Hyper Core- OE Specific mounting and direct fit- Nocolok-R Brazing- Precise Tube and Fin alignment- Billet aluminum filler neck- 1/8 Inch NPT female accessory fittingPrecise Tube and Fin Alignment Construction under strict quality control and solid boxing result in tubes with optimal coolant flow and fins with highly efficient heat transferNocolok Brazing TubesFinsHeaders and Brackets are brazed in a state-of-the-art Nocolok furnacebonding all components to resist damage from vibrationroad debrisand the elements.Billet Filler Neck Precision machined billet filler necks are incorporated on each Koyo radiator for strengthdurability and better sealing.OE Specific Mounting and Hand Crafted Heliarc WeldsKoyo incorporates application specific mounting locations for all fan shroudsinlet/outlet hoses and top/bottom mounting pinsensuring quick and pain-free installs. Each Koyo All Aluminum Race Radiator is Heliarc welded individually by hand. This creates the strongest aluminum to aluminum bondto mate all components.Images are for reference only and may differ from actual product