Oil Sump Pan for Nissan Frontier Xterra D21 L4 2.4L 11110-86G00 NSP33A. for Nissan D21 1990-1994. for Nissan Maxima 1981-1983. for Nissan Frontier 1998-2004. Type: Fan Clutch. Designed to automatically adjust the fan speed based on the engine's temperature, ensuring optimal cooling and preventing overheating.