Mishimoto Alum X-Line Radiator for 1975-79 Buick Apollo & Century

Mishimoto Alum X-Line Radiator for 1975–79 Buick Apollo & Century Direct-fit aluminum radiator engineered to replace the factory unit in classic Buick Apollo and Century models. The Mishimoto Alum X-Line delivers improved cooling performance, superior durability, and reliable OEM-style fitment for a range of 1975–1981 Buick engines and transmissions. Key Features High-efficiency core – Crossflow aluminum core for increased heat dissipation and consistent operating temperatures. Durable construction – TIG-welded end tanks and CNC-machined fittings resist corrosion and vibration. OEM-compatible – Precise mounting points and inlet/outlet locations for hassle-free installation. Enhanced coolant capacity – Improved thermal reserve for heavy traffic, towing or restored street use. Lifetime warranty – Backed by Mishimoto’s commitment to quality and long-term reliability. Applications Designed to fit a broad list of Buick Apollo and Century models with 3.2L–5.7L and 3.8L–5.0L engines across 1975–1981 model years. See application guide for complete fitment and transmission-specific variants. Why Choose Mishimoto Mishimoto radiators combine proven motorsport technology with street-ready reliability. Upgrade your classic Buick with a radiator that reduces overheating, improves engine longevity, and maintains authentic fitment — ideal for restorations, performance builds, and daily drivers.